RBSE Solutions Class 5 EVS Chapter 5 Architect of Nature

Page 44

Think and Tell

 

Question. If the spider's web is so strong, then why does it break?
Answer: Spider webs are made of silk, which is strong but delicate. Webs can tear because of strong wind, heavy rain, dust, or if something hits them, like a person or an animal. The web is designed to catch insects. But if it is used too much or exposed to harsh weather, it can become weak and break even though it is strong. *Spiders often repair or rebuild their webs to maintain their effectiveness.*
In simple words: Spider webs are strong silk, but they are also delicate. Wind, rain, or bumps can break them. Webs get weaker over time from use and weather.

🎯 Exam Tip: When explaining natural phenomena, always break down complex ideas into simple causes and effects for clarity.

 

Page 46

Activities for Exploration-

 

Question. Have you also seen a bird's nests around your home or in the fields? Do all birds make similar nests? Observe bird's nests around your school, houses or in the field and collect some information. Write your observations in the table given below-
Answer: Yes, birds' nests can be seen around homes and in fields, and not all birds make similar nests; their designs vary greatly. Here are some observations:

In simple words: Birds build different kinds of nests using various materials like pebbles, grass, and leaves. Some build on the ground, some in trees, and some on buildings.

🎯 Exam Tip: For observation-based questions, describe specific examples and provide clear, organized data like a table to score full marks.

Think and Write-

 

Question. If birds do not get a place to build their nest then where will they live?
Answer: If birds cannot find places to build nests, they will search for other spots. They might use roofs of buildings, holes in walls, or electric poles. Some birds will make small, temporary nests in tree branches or bushes. Others, like sandpipers, might even lay their eggs directly on the ground. *Finding a safe place for eggs is very important for birds to survive and raise their young.*
In simple words: If birds can't find nesting spots, they will look for other places like roofs, wall holes, or electric poles. Some might build temporary nests or lay eggs on the ground.

🎯 Exam Tip: Think about alternative locations birds might choose when natural habitats are scarce, considering both natural and man-made structures.

 

Question. Can you help the birds to build their nests?
Answer: Yes, we can definitely help birds build their nests. We can put up small wooden nest boxes near our homes and schools. These boxes give safe spots for birds like sparrows and bulbuls. We can also help by looking after existing trees and planting new young trees to create more natural places for them to nest. *This simple act can significantly support bird populations in our local areas.*
In simple words: Yes, we can help birds by putting up nest boxes made of wood. We can also plant more trees and take care of old ones.

🎯 Exam Tip: Focus on practical and actionable ways to assist local wildlife, like providing nesting sites and preserving natural vegetation.

Page 47

 

Question. Do you want to know other animals like ants, make burrows or dens to live in? If yes, then for that we have to carefully observe the places around school and home. Which animal's houses have you seen that are like burrows or dens in the soil? Write the names of those animals here-
Answer: Yes, many animals besides ants create burrows or dens in the soil to live in. To find them, we need to observe the areas around our school and home carefully. Animals whose houses look like burrows or dens in the soil include:
1. Mouse
2. Snake
*These underground homes offer protection from predators and extreme weather.*
In simple words: Yes, other animals also make homes in the soil like ants. We can see places where animals like mice and snakes live in holes in the ground.

🎯 Exam Tip: When asked to list examples, provide common and relevant species that fit the description. Always answer the "if yes" part explicitly.

 

Question 1. What is the role of different creatures in our lives?
Answer: All animals and creatures are very important for keeping nature balanced. For example, spiders eat insects, which protects our crops. Birds help spread seeds and pollinate flowers, allowing new plants to grow. Ants and earthworms make the soil rich and healthy for plants. Butterflies also help with pollination. Snakes and lizards eat rats and other insects, which keeps their numbers in check. All these creatures are linked in a food chain and work together to keep our environment healthy. *Each small creature contributes to the larger health of the ecosystem, demonstrating nature's interconnectedness.*
In simple words: Animals keep nature balanced. Spiders eat insects, birds spread seeds, and ants make soil rich. Snakes and lizards control rats. All help the environment stay healthy.

🎯 Exam Tip: When describing ecological roles, link specific animals to their functions and explain how these functions contribute to the overall environmental balance.

 

Question 2. What impact will the absence of animals have on the environment?
Answer: If animals were to disappear, the balance of nature would be greatly upset. Without spiders, there would be too many insects, harming our crops. Without birds, plants would not be pollinated, and seeds would not spread, meaning fewer new plants. If ants and earthworms were gone, the soil would lose its richness. Without snakes, there would be a lot more rats, which would damage stored grains. This would cause more pollution and diseases, breaking the food chain and hurting both the environment and human life. *The intricate web of life shows how vital each species is for the overall health and stability of an ecosystem.*
In simple words: Without animals, nature would become unbalanced. More insects, fewer plants, poor soil, and more rats would lead to pollution and sickness.

🎯 Exam Tip: Highlight the chain reactions and interconnectedness of an ecosystem when discussing the impact of species loss, covering various aspects like food chains, plant life, and disease.

Page 50

Let Us Discuss-

 

Question. Why did the crocodile not like turtles, snakes and lizards?
Answer: The crocodile did not like turtles, snakes, or lizards because he judged them by how they looked and acted. He thought turtles were too slow and foolish. He saw snakes as wet and ugly because of their smooth skin and how they crawled. He also thought lizards were not very useful and only ate insects. This dislike came from the crocodile's lack of knowledge and understanding about these animals. *Often, our dislike for something stems from a lack of understanding rather than a genuine fault in the other party.*
In simple words: The crocodile disliked turtles, snakes, and lizards because of how they looked and moved. He thought turtles were slow, snakes were ugly, and lizards were not useful, showing his lack of understanding.

🎯 Exam Tip: When explaining character motivations, focus on the character's perspective and any underlying traits like prejudice or ignorance.

 

Question. The healthy environment of the forest depends on all creatures. Why and how?
Answer: The health of a forest depends on all its creatures because each one has a special job in nature.
1. **Turtles:** They help keep the environment clean by eating rotten fruits and dead fish, stopping diseases from spreading.
2. **Snakes:** They control the number of rats and small animals by eating them, which protects crops and stored food.
3. **Lizards:** They help manage the number of insects and mosquitoes. This protects our crops and grains.
4. **Other creatures:** Spiders eat insects, birds help flowers make seeds, and ants make the soil rich.
All these creatures help keep the food chain and natural cycles (like pollination and waste breakdown) working well. *This delicate balance ensures that the forest remains a thriving and self-sustaining ecosystem.*
In simple words: A forest needs all its creatures to be healthy. Turtles clean up, snakes control pests, lizards eat insects, and other animals help plants and soil. Each plays a part.

🎯 Exam Tip: Organize your answer with clear points for each creature's role, explaining both the "why" (interdependence) and "how" (specific actions) of environmental balance.

RBSE Class 5th EVS Chapter 5 Question Answer - Practice Work

Choose the Correct Answer

 

Question 1. A sandpiper makes its nest-
(a) on a tree
(b) in water
(c) on the ground
(d) in the wall
Answer: (c) on the ground
In simple words: A sandpiper bird builds its nest on the ground, usually in a hidden spot.

🎯 Exam Tip: Pay attention to specific details mentioned about animal habitats, as these often appear in multiple-choice questions.

 

Question 3. What do cocoon turn into?
(a) Sandpiper
(b) Butterfly
(c) Honey Bee
(d) Sparrow
Answer: (b) Butterfly
In simple words: A cocoon is a shell made by a caterpillar. Inside it, the caterpillar changes into a butterfly.

🎯 Exam Tip: Remember the life cycle of insects and the specific stages, such as the transformation from larva (caterpillar) to pupa (cocoon) to adult (butterfly).

 

Question 4. What does a spider use its web for?
(a) Catch its prey
(b) to take rest
(c) to fly
(d) food storage
Answer: (a) Catch its prey
In simple words: Spiders build webs mainly to trap insects and other small creatures, which they then eat.

🎯 Exam Tip: Understand the primary purpose of specific animal structures or behaviors, like a spider's web for hunting.

 

Question 5. Which bird makes its nest from straws and grass?
(a) Woodpecker
(b) Sandpiper
(c) Baya weaver bird
(d) Nightingale
Answer: (c) Baya weaver bird
In simple words: The Baya weaver bird is known for its skillfully woven nests made from straw and grass.

🎯 Exam Tip: Associate specific birds with their characteristic nesting materials and building styles.

Answer the Following in Three Four Sentences-

 

Question 2. How do birds make nest and how does it help them in their lives?
Answer: Birds build their nests using natural things such as grass, small sticks (straws), leaves, mud, and small stones. For example, the Baya weaver bird makes a hanging nest, while the sandpiper builds its nest on the ground with pebbles. These nests are very important for birds to lay their eggs safely, raise their young, and protect them from danger. *The diverse nesting strategies of birds highlight their adaptation to different environments.*
In simple words: Birds build nests with grass, leaves, mud, and stones. Nests help them lay eggs, care for chicks, and stay safe.

🎯 Exam Tip: Explain both the 'how' (materials and methods) and 'why' (purpose and benefits) of bird nesting for a complete answer.

 

Question 3. How does a woodpecker make its nest?
Answer: A woodpecker makes its nest by drilling a hole into a tree trunk with its strong beak. It usually picks wood that is rotten or dead because it's easier to carve. Inside the hole, the woodpecker adds small pieces of wood, grass, or other soft materials to make a cozy bed for its eggs. *This unique nesting method provides excellent protection for its young.*
In simple words: A woodpecker uses its beak to drill a hole in a tree trunk, often in soft, dead wood. It lines the hole with soft materials for its eggs.

🎯 Exam Tip: Describe the specific tools (beak), materials (rotten wood), and process used by a woodpecker to construct its nest.

 

Question 4. Write about the natural habitats found around your house or school.
Answer: Around our homes and schools, we can often find various natural animal homes. These include ant holes in the soil, spider webs on trees or walls, and nests built by sparrows or bulbuls. Ants dig tunnels in the ground for their homes. Spiders create their webs on different surfaces to catch food. Birds, like sparrows, build their nests using straw and other materials on tree branches. *Observing these habitats helps us appreciate the wildlife in our immediate surroundings.*
In simple words: Around homes and schools, we see ant holes in the soil, spider webs on trees or walls, and bird nests on branches made of straw.

🎯 Exam Tip: List specific examples of animal homes and briefly describe their features or locations to demonstrate clear observation.

RBSE Class 5 EVS Chapter 5 Architect of Nature Question Answer

Multiple Choice Questions :

 

Question 1. What do animals use to build their homes?
(a) Natural materials
(b) Brick and cement
(c) Plastic
(d) Metal
Answer: (a) Natural materials
In simple words: Animals build their homes using things like grass, leaves, mud, and twigs found in nature.

🎯 Exam Tip: Recall that animals typically utilize resources readily available in their natural environment for shelter.

 

Question 3. Which bird makes a nest by making a hole in the trunk of tree?
(a) Baya
(b) Sandpiper
(c) Woodpecker
(d) Sparrow
Answer: (c) Woodpecker
In simple words: A woodpecker uses its strong beak to carve a hole in a tree trunk, making a safe nest inside.

🎯 Exam Tip: Identify birds known for their distinct nesting habits, such as the woodpecker's tree-boring technique.

 

Question 4. How is the internal structure of ant burrows?
(a) Simple hole
(b) Single tunnel
(d) Divided into many branches
Answer: (d) Divided into many branches
In simple words: Ant burrows are not just one simple hole; they have many connected tunnels and rooms inside.

🎯 Exam Tip: Remember that many animal burrows, especially those of social insects like ants, have complex internal structures for different purposes.

 

Question 5. Which of the following bird makes a beautiful hanging nest for itself by collecting grass, leaves and straws?
(a) Baya
(b) Woodpecker
(c) Sandpiper
(d) None of the options
Answer: (a) Baya
In simple words: The Baya weaver bird is famous for weaving very beautiful, bottle-shaped nests that hang from branches.

🎯 Exam Tip: Associate specific birds with their distinctive nest-building characteristics, like the Baya's intricate hanging nest.

 

Question 7. What did happen when snakes leave forest?
(a) The fruits started rotting
(b) The number of insects increased
(c) The number of rats increased
(d) The fishes started dying
Answer: (c) The number of rats increased
In simple words: When snakes, which eat rats, left the forest, there were no predators to control the rat population, so their numbers grew.

🎯 Exam Tip: Understand how the removal of a predator (like snakes) can lead to an unchecked increase in its prey (like rats), disrupting the food chain.

 

Question 8. What happened to the forest due to absence of lizards?
(a) The number of rats increased
(b) Dirt reduced
(c) Crops remained safe
(d) The number of insects increased
Answer: (d) The number of insects increased
In simple words: Lizards eat insects, so without lizards, the number of insects in the forest would grow much larger.

🎯 Exam Tip: Recognize the role of insectivores like lizards in controlling insect populations and the consequences of their absence.

Fill in the Blanks

 

Question 1. Animals and small creatures make their own _____.
Answer: homes
In simple words: Animals build places to live in.

🎯 Exam Tip: Remember that shelter is a fundamental need for all living beings, and animals construct "homes" to fulfill this need.

 

Question 2. The _____ weaves its web by taking out silk thread from its mouth.
Answer: spider
In simple words: A spider uses silk from its mouth to build its web.

🎯 Exam Tip: Recall specific animal actions and the tools they use, such as a spider's silk and mouth for web-making.

 

Question 3. The cocoon is made by the _____.
Answer: caterpillar
In simple words: A caterpillar forms a cocoon around itself as it changes.

🎯 Exam Tip: Understand the life cycle of butterflies and moths, specifically that caterpillars create cocoons.

 

Question 1. The spider's web is used only as a home.
Answer: False
In simple words: A spider's web is not just a home; it's also a trap to catch food.

🎯 Exam Tip: Consider all functions of an animal structure; a spider's web serves multiple purposes beyond just shelter.

 

Question 2. The caterpillar transforms into a butterfly in a cocoon.
Answer: True
In simple words: Caterpillars become butterflies inside a cocoon.

🎯 Exam Tip: This is a key fact about the metamorphosis of butterflies, illustrating a complete life cycle transformation.

 

Question 3. The woodpecker makes a nest by making a hole in the tree trunk.
Answer: True
In simple words: Woodpeckers drill holes in tree trunks to build their nests.

🎯 Exam Tip: Remember unique nesting methods of birds, such as the woodpecker's use of its beak to excavate a nest in wood.

 

Question 4. The spider never makes a new web.
Answer: False
In simple words: Spiders often build new webs or repair old ones regularly.

🎯 Exam Tip: Understand that animals adapt their behaviors, like web-building, based on need and environmental conditions.

Match the Following-

 

Question. Match the following.
Answer:

In simple words: Match each animal with its correct action or habitat type. Baya makes hanging nests, ants live in branched holes, turtles clean up rotten food, and snakes help control rats.

🎯 Exam Tip: For matching questions, carefully link each item in one column to its correct counterpart in the other, based on known facts or context.

Very Short Answer Type Questions-

 

Question 1. How does a spider make its web?
Answer: A spider creates its web by letting out a fine silk thread from its mouth. This silk is sticky and strong, allowing the spider to weave its intricate net. *The silk is produced by special glands in the spider's body.*
In simple words: A spider makes its web by letting out silk thread from its mouth.

🎯 Exam Tip: Briefly explain the mechanism (silk thread, mouth) used by a spider for web construction.

 

Question 2. What does ant store in its hole?
Answer: Ants store food and their eggs inside their holes. These holes serve as safe places for their supplies and for the development of new ants. *Ants are very organized and work together to gather and protect their resources.*
In simple words: Ants store food and their eggs in their holes.

🎯 Exam Tip: Remember that ant colonies store vital resources like food and eggs within their nests for survival and growth.

 

Question 3. What does the healthy environment of the forest depend on?
Answer: The healthy environment of a forest depends on all the living beings within it. Every plant and animal, big or small, plays a vital role in maintaining the balance of the ecosystem. *Their interconnectedness ensures the forest thrives.*
In simple words: A healthy forest environment depends on all the living things that live there.

🎯 Exam Tip: Emphasize the concept of interdependence and ecosystem balance, where every living component contributes to the overall health of the forest.

 

Question 4. Where was Pranay walking with his father?
Answer: Pranay was walking with his father in the open fields. This allowed them to observe nature around them. *Exploring natural spaces offers a great way to learn about the environment.*
In simple words: Pranay and his father were walking in the fields.

🎯 Exam Tip: For story-based questions, provide a direct answer from the text.

 

Question 5. What was the crocodile's name in chapter 'Architect of Nature'?
Answer: In the chapter 'Architect of Nature', the crocodile's name was Makar. He was an important character in the story. *Stories often use character names to make them more memorable.*
In simple words: The crocodile in the story was named Makar.

🎯 Exam Tip: Recall and state key character names accurately from the story.

 

Question 6. To whom did the crocodile order to leave the forest?
Answer: The crocodile ordered the turtles, snakes, and lizards to leave the forest. He thought they were not useful. *His decision had unforeseen negative consequences for the forest's balance.*
In simple words: The crocodile told the turtles, snakes, and lizards to leave the forest.

🎯 Exam Tip: Base your answer on the specific events and characters mentioned in the story.

 

Question 8. What was the result of the turtle leaving the forest?
Answer: When the turtles left the forest, the area started to smell bad. This was because the rotten fruits and dead fish were no longer being cleaned up by the turtles. *Turtles play an important role as scavengers, cleaning up decaying matter.*
In simple words: After the turtles left, the forest began to smell bad from rotten fruits and dead fish.

🎯 Exam Tip: Connect the absence of a specific animal to the direct environmental consequence it caused, as depicted in the story.

 

Question 9. Where do ants live?
Answer: Ants live in homes called anthills. These are complex underground structures with many tunnels and rooms. *Anthills serve as a protected space for their colony and food storage.*
In simple words: Ants live in anthills.

🎯 Exam Tip: State the common name for the dwelling place of ants clearly.

 

Question 10. Who was the leader of all reptiles in chapter 'Architect of Nature'?
Answer: The leader of all reptiles in the chapter 'Architect of Nature' was a crocodile. His name was Makar. *Leaders often have a great responsibility to understand and care for their community.*
In simple words: The crocodile, named Makar, was the leader of the reptiles.

🎯 Exam Tip: Identify the specific character and species that held the leadership role in the story.

Short Answer Type Questions

 

Question 1. What is the structure of an anthill like?
Answer: From the outside, an anthill might look like a simple hole in the ground. However, inside, it is a complex structure with many different tunnels and rooms (branches). Ants use these various parts to store their food, keep their eggs safe, and live comfortably. *The intricate design of an anthill showcases the advanced social structure and engineering skills of ant colonies.*
In simple words: An anthill looks like a simple hole outside. But inside, it has many tunnels and rooms where ants store food, eggs, and live.

🎯 Exam Tip: Describe both the external appearance and the internal complexity of an anthill, including its various functions.

 

Question 2. What does a weaver bird nest look like?
Answer: A Baya weaver bird builds a hanging nest that resembles a bottle. It carefully weaves this nest using materials like grass, leaves, and thin stalks (straws). The nest is then hung from tree branches, providing a safe and protected home for its eggs and young chicks. *These beautifully crafted nests are a marvel of natural architecture, designed for safety and shelter.*
In simple words: A weaver bird makes a hanging nest from grass, leaves, and straw. It looks like a bottle and keeps its eggs and chicks safe on tree branches.

🎯 Exam Tip: Focus on the distinctive features of a weaver bird's nest: its hanging nature, bottle shape, and woven materials.

 

Question 3. What role do tortoise play in the forest?
Answer: Tortoises play an important role in the forest by helping to keep the environment clean. They do this by eating rotten fruits and dead fish. This prevents the spread of diseases, contributing to a healthier forest ecosystem. *Their scavenging habits are essential for natural decomposition and nutrient cycling.*
In simple words: Tortoises help keep the forest clean by eating rotten fruits and dead fish, which stops diseases from spreading.

🎯 Exam Tip: Explain the specific ecological role of tortoises as scavengers and how their actions benefit the forest environment.

 

Question 4. What happens in the forest without snakes?
Answer: If snakes were absent from the forest, the number of rats would grow very quickly. These increased rats would then destroy crops and stored grains. This change would break the natural food chain and harm the environment. *Snakes play a crucial role as predators, keeping rodent populations in check.*
In simple words: Without snakes, many rats would appear. They would ruin crops and food, breaking the food chain and hurting nature.

🎯 Exam Tip: Detail the specific consequences of removing a key predator from an ecosystem, focusing on the resulting population imbalances and disruptions.

 

Question 5. How do lizards help in maintaining environmental balance?
Answer: Lizards help maintain the balance of the environment by eating insects. By controlling the insect population, they prevent insects from damaging crops. This ensures that the natural ecosystem remains in a healthy balance. *Their role as insectivores is vital for pest control in many habitats.*
In simple words: Lizards help balance nature by eating insects. This stops insects from harming crops and keeps the environment healthy.

🎯 Exam Tip: Explain the direct positive impact of lizards on environmental balance through their role in insect control.

Long Answer Type/Essay Type Questions-

 

Question 1. Why are living beings called natural engineers?
Answer: Living beings are called natural engineers because they use materials found in nature, like grass, soil, and silk, to build amazing and complex structures. Spiders weave webs, Baya birds construct nests, and ants dig burrows. These structures serve important purposes such as providing shelter, catching food (prey), and raising their young. The cleverness and skill with which these creatures build make them true natural engineers. *Their ability to adapt and build intricate homes from simple elements is a testament to natural selection.*
In simple words: Living things are called natural engineers because they use natural items like grass and soil to build homes, webs, and burrows. They do this for shelter, food, and to have babies, showing great skill.

🎯 Exam Tip: Provide examples of animals and their specific architectural feats, linking their building methods to the concept of "engineering" in nature.

 

Question 2. What lesson do we learn about environmental balance from the story of Makar (crocodile)?
Answer: From the story of Makar the crocodile, we learn that every single living creature is crucial for keeping nature in balance. When Makar made the turtles, snakes, and lizards leave, the forest became dirty. The number of rats and insects grew, leading to the spread of diseases. This shows that all living things are connected in the food chain and natural cycles. Therefore, it is very important to protect all types of life (biodiversity) to keep our environment healthy. *The story serves as a cautionary tale about the consequences of disrupting natural ecosystems.*
In simple words: The story teaches us that all living things are important for nature's balance. Without certain animals, the forest got dirty, pests grew, and diseases spread. We must protect all life to keep nature healthy.

🎯 Exam Tip: Summarize the key message of the story by outlining how Makar's actions disrupted the ecosystem and the broader lesson about biodiversity and interdependence.

 

Question 3. What is the impact on the environment if living beings do not exist?
Answer: If living beings did not exist, the environment would suffer greatly. The delicate balance of nature would completely break down. There would be no processes like pollination, seed dispersal, or decomposition. Waste would pile up, soil would lose its fertility, and crucial food chains would collapse. This would lead to a sterile and lifeless world, unable to support any form of life. *Every organism, from the smallest microbe to the largest animal, plays an irreplaceable role in maintaining the planet's life support systems.*
In simple words: If no living things existed, nature's balance would fail. No plants would grow, waste would not break down, and the world would become lifeless.

🎯 Exam Tip: Envision a world without life and describe the absence of essential ecological processes (e.g., decomposition, pollination, food chains) and their cascading negative effects.

 

Question 4. Explain the structure and use of a spider's web?
Answer: A spider builds its web by releasing silk threads from its mouth. These webs can be round, shaped like tunnels, or even have unusual designs. The web acts as both a home for the spider and a clever tool for catching its food. When an insect flies into the web and gets stuck, the spider then eats it. Some spiders even rebuild their webs often to keep them strong and effective. This process is a great example of natural engineering and helps to control the number of insects in an area. *The web's intricate design is perfectly adapted for capturing prey, showcasing the spider's remarkable hunting strategy.*
In simple words: A spider weaves its web from silk threads from its mouth. The web is its home and a trap for insects. When insects get stuck, the spider eats them. Spiders also rebuild their webs often.

🎯 Exam Tip: Describe both the physical characteristics (structure, shape, materials) and the functional uses (home, prey capture, insect control) of a spider's web.

RBSE Class 5 EVS Chapter 5 Notes Architect of Nature

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