CBSE Class 5 Science The Living World Worksheet

1. NAME THE FOLLOWING:

Question a). Two plants which grow from leaves : ____________, ____________
Answer: Bryophyllum, Begonia
In simple words: Some plants can produce new baby plants directly from the edges of their leaves.

Exam Tip: Remember Bryophyllum as the classic textbook example for leaf reproduction.

Question b). Two plants which grow by stem cutting : ____________, ____________
Answer: Rose, Hibiscus (or Sugarcane, Money plant)
In simple words: Cutting a piece of the stem and planting it in the soil can grow into a new plant.

Exam Tip: Stem cuttings must have at least one node where buds are present.

Question c). Two seeds dispersed by air : ____________, ____________
Answer: Cotton, Dandelion (or Madar/Aak)
In simple words: Seeds that are very light or have hair-like structures are carried away easily by the wind.

Exam Tip: Look for keywords like "hair", "wings", or "light weight" when identifying wind-dispersed seeds.

Question d). A crop which grows in wet & clayey soil : ____________________
Answer: Rice (Paddy)
In simple words: Rice needs plenty of water to grow, so clayey soil that holds water well is ideal.

Exam Tip: Clayey soil retains water, which is a specific requirement for paddy crops.

Question e). Two crops which grow well in hill slopes : ____________, ____________
Answer: Tea, Coffee (or Apples, Potatoes)
In simple words: These crops need sloping land so that rainwater does not stagnate around their roots.

Exam Tip: Tea and coffee are typical plantation crops of hilly regions like Assam and Nilgiris.

Question f). A seed dispersed by water : ____________________
Answer: Lotus (or Coconut)
In simple words: Plants growing in or near water produce seeds or fruits that float and travel via water currents.

Question g). Two seeds dispersed by explosion : ____________, ____________
Answer: Pea, Balsam (or Castor, Bean)
Answer: Pea, Balsam
In simple words: The fruit pods dry up and burst open suddenly, scattering the seeds away from the parent plant.

Exam Tip: Explosion mechanism is also known as bursting of fruit pods.

Question h). Three winter vegetables : ____________, ____________, ____________
Answer: Carrot, Radish, Cabbage (or Spinach, Cauliflower, Peas)
In simple words: Crops that grow best during the cold winter season are called rabi or winter crops.

Exam Tip: Root vegetables like carrots and radishes thrive in lower temperatures.

Question i). Three summer fruits: ____________, ____________, ____________
Answer: Mango, Watermelon, Muskmelon (or Litchi)
In simple words: Juicy fruits that ripen during the hot summer months.

Exam Tip: Summer fruits usually have high water content to keep us hydrated.

Question m). Name two tuberous roots. ____________________, ____________________
Answer: Sweet potato, Dahlia (or Tapioca)
In simple words: Modified roots that store food and can grow into new plants.

Exam Tip: Note that potato is a stem tuber, whereas sweet potato is a root tuber.

2. FILL IN THE BLANKS:

Question a). The baby plant gets its food from ____________________.
Answer: cotyledons (seed leaves)
In simple words: The seed stores food inside its seed leaves to feed the tiny baby plant until it grows green leaves.

Exam Tip: Cotyledons provide initial nourishment before photosynthesis begins.

Question b). Seeds should be stored in ____________________ container.
Answer: airtight, dry and clean
In simple words: Keeping air and moisture away prevents seeds from rotting or getting eaten by insects.

Exam Tip: Moisture and air are necessary for germination; removing them keeps seeds dormant.

Question c). Rice & Jute grow well in ____________________ soil.
Answer: clayey
In simple words: Clayey soil holds a large amount of water, which is perfect for rice and jute plants.

Exam Tip: Associate clayey soil with water retention.

Question d). Coconut floats in water because of its ____________________ outer coat.
Answer: fibrous
In simple words: The fibrous coat traps air, making the fruit light enough to float on water.

Question e). Germination of seeds into seedling is called ____________________.
Answer: germination
In simple words: The process by which a seed grows into a new baby plant or seedling.

Exam Tip: Water, air, and suitable warmth are essential for germination.

Question f). Baby shoot develops into future ____________________ & ____________________.
Answer: stem, leaves (plumule develops into shoot/stem and leaves)
In simple words: The plumule part of the embryo grows upwards to form the stem and leaves.

Exam Tip: Remember: Plumule = Shoot, Radicle = Root.

Question g). Seed-coat protects the seed from ____________________ & ____________________ loss of water.
Answer: injury (damage), excessive
In simple words: The outer covering acts as a tough shield guarding the delicate inside of the seed.

Exam Tip: Seed-coat is the protective outer layer of a seed.

Question h). Seeds dispersed by wind have ____________________ & ____________________ on them.
Answer: hair, wings
In simple words: Lightweight structures help wind catch them and carry them far away.

Exam Tip: Hair-like tufts or wing-like growths are wind-dispersal adaptations.

Question i). Seeds dispersed by animals have ____________________, ____________________ & ____________________ on them.
Answer: hooks, spines, stiff hairs (or barbs)
In simple words: These structures stick to the fur of animals or clothing of humans to travel to new places.

Exam Tip: Cocklebur and Xanthium are classic examples of hooked seeds.

3. SAY TRUE OR FALSE. IF FALSE WRITE TRUE STATEMENTS.

Question a). Melons grow well in the hill slopes.
Answer: False.
True statement: Melons grow well in river beds or sandy soil in plains, not on hill slopes.
In simple words: Melons need warm sandy soil and flat river beds, whereas hill slopes are suited for tea, coffee, and apples.

Exam Tip: Always correct the false statement by replacing the incorrect location or condition.

Question b). Lotus & water-lily are dispersed by water .
Answer: True.
In simple words: Aquatic plants release seeds that float on water currents to reach new shores.

Exam Tip: Water plants generally use water as their primary agent of seed dispersal.

Question c). Seeds dispersed by animals have wings on them .
Answer: False.
True statement: Seeds dispersed by animals have hooks, spines, or sticky hair on them. (Wings are found on wind-dispersed seeds.)
In simple words: Animal-dispersed seeds need hooks to catch fur, while winged seeds are carried by the wind.

Exam Tip: Match wings with wind and hooks/spines with animals.

Question d). All plants reproduce to keep their species alive on the earth.
Answer: True.
In simple words: Reproduction ensures that new plants of the same kind continue to exist and do not die out.

Exam Tip: Reproduction is a life process essential for the survival of a species, not an individual.

4. GIVE REASON:

Question a). All seeds produced by a plant do not grow into new plants .
Answer: All seeds do not grow into new plants because many seeds are eaten by animals and birds, some are destroyed by heavy rain or wind, and many do not get favorable conditions like right amount of air, water, and warmth required for germination.
In simple words: Only a fraction of seeds survive and find the right conditions to sprout.

Exam Tip: Mention lack of proper conditions, destruction by weather, and consumption by animals.

Question b). Seeds & grains should be properly stored in air tight, dried & sealed container.
Answer: Seeds and grains should be stored this way to protect them from moisture, air, and pests like insects, rats, and fungi (mold), which can spoil them or cause them to germinate prematurely.
In simple words: Keeping moisture and pests out preserves food grains for a long time.

Question a). Write the name of two chemical fertilizers useful for crops .
Answer: Urea, NPK (Nitrogen, Phosphorus, Potassium), or Ammonium sulphate.
In simple words: Chemical fertilizers supply essential nutrients to the soil to help crops grow faster and stronger.

Exam Tip: Urea is the most commonly cited example of a nitrogenous fertilizer.

Question b). What is the need of dispersing seeds from the parent plant ?
Answer: Seed dispersal is necessary to prevent overcrowding. If all seeds fall close to the parent plant, they will have to compete for sunlight, water, minerals, and space, which could stunt their growth or kill them.
In simple words: Spreading seeds far away gives each baby plant enough room, light, and food to grow properly.

Question c). Name the conditions necessary for the germination of seeds.
Answer: The three necessary conditions for seed germination are:
1. Water (moisture to soften the seed coat and activate enzymes)
2. Air (oxygen for respiration)
3. Suitable warmth (proper temperature for metabolic activities)
In simple words: A seed needs water, air, and warmth to wake up and grow.

Exam Tip: Learn all three conditions (Air, Water, Warmth) as this is a very common exam question.

Question d). Which part of the seed grow into new plant ?
Answer: The embryo inside the seed grows into a new plant. Specifically, the radicle grows into the root and the plumule grows into the shoot.
In simple words: The tiny baby plant (embryo) hidden inside the seed develops into the new plant.

Question e). Differentiate between monocotyledons and dicotyledons.
Answer:
- Monocotyledons (Monocots): Seeds having only one cotyledon (seed leaf). Examples: Wheat, Rice, Maize.
- Dicotyledons (Dicots): Seeds having two cotyledons (seed leaves). Examples: Pea, Bean, Gram.
In simple words: Monocots have one seed leaf while dicots have two seed leaves.

Exam Tip: Always provide definitions and examples for both categories when asked to differentiate.

Question f). What is a scar?
Answer: A scar is a mark on the seed coat (known as the hilum) through which the seed was attached to the fruit or pod inside.
In simple words: It is the tiny spot on a seed that shows where it was joined to the parent plant.

Question a). Mushrooms reproduce by____________________.
Answer: spores
In simple words: Non-flowering plants like mushrooms produce tiny dust-like spores instead of seeds to grow new ones.

Exam Tip: Spores are characteristic of fungi, ferns, and mosses.

Question b). Long stems along with buds grow over the soil surface and are called ____________________
Answer: runners (or stolons)
In simple words: Creeping stems run along the ground and develop roots and shoots to form new plants (e.g., strawberry).

Exam Tip: Strawberries and grass spread primarily through runners.

Question c). Name the process of reproduction in Jasmine plant ____________________.
Answer: layering
In simple words: A low-growing branch of the plant is bent down and covered with soil to grow roots, forming a new plant.

Exam Tip: Layering is a common artificial vegetative propagation method used for Jasmine and Mint.