RBSE Solutions Class 11 Biology Chapter 1 Biology Introduction

RBSE Class 11 Biology Chapter 1 Multiple Choice Objective Questions

Question 1. Father of modern classification
(a) Carolus Linnaeus
(b) Aristotle
(c) Maharishi Charak
(d) Charls Darwin
Answer: (a) Carolus Linnaeus
In simple words: Carolus Linnaeus is considered the person who created the system we use today to name and group living things.

🎯 Exam Tip: Remember key figures like Linnaeus for their foundational contributions to biology and classification.

Question 2. Discoverer of plastic surgery is
(a) Charak
(b) Sushruta
(c) J.C Bose
(d) Dhawantri
Answer: (b) Sushruta
In simple words: Sushruta was an ancient Indian surgeon who pioneered many surgical techniques, including forms of plastic surgery.

🎯 Exam Tip: Note the contributions of ancient Indian scientists in different fields, as they are often recognized globally.

Question 4. Branch of Science that deals with study of fresh water animals
(a) Pedology
(b) Ecology
(c) Limnology
(d) Phycology
Answer: (c) Limnology
In simple words: Limnology is the specific study of lakes, rivers, and other freshwater environments, including the animals that live there.

🎯 Exam Tip: Learn the definitions of different branches of biology to correctly identify their areas of study.

RBSE Class 11 Biology Chapter 1 Very Short Answer Questions

Question 1. Give the name of one Indian palaeobotanist.
Answer: Birbal Sahni was a famous Indian scientist who studied ancient plants and fossils.
In simple words: Birbal Sahni was an Indian scientist who studied old plants.

🎯 Exam Tip: For specific names, ensure correct spelling and mention their field of expertise.

Question 2. The suggestion given by K.C Mehta to control rust dis-ease in wheat.
Answer: K.C. Mehta suggested that to stop wheat rust disease, farmers should not plant wheat for a few days. This helps break the disease cycle.
In simple words: K.C. Mehta advised stopping wheat farming for some days to control rust disease.

🎯 Exam Tip: When answering about control measures, provide a clear, concise action.

Question 3. Name the scientist who made the Indian self sufficient in the field of agriculture.
Answer: M.S. Swaminadhan is the scientist credited with making India self-sufficient in agriculture. He is often called the "Father of the Green Revolution" in India.
In simple words: M.S. Swaminadhan helped India grow enough food for itself.

🎯 Exam Tip: Identify key figures and their most significant contributions clearly.

RBSE Class 11 Biology Chapter 1 Short Answer Questions

Question 1. Write a short note on the history of biology.
Answer: The word "Biology" comes from two old Greek words: "Bios," meaning life, and "logia," meaning study. Karl Linnaeus first used a similar term, "Biologi," in Latin in his 1736 book. Later, Michael Cristoph Hanov used the term "Biology" more widely in his book in 1766.
In simple words: Biology comes from Greek words for "life" and "study." Karl Linnaeus and Michael Hanov helped popularize the term in their books centuries ago.

🎯 Exam Tip: When discussing history, include key names, dates, and their specific contributions.

Question 2. Write a short note on the role of Maharishi charak in medicine.
Answer: Maharishi Charak, who lived around 300 BC, was a very important person in ancient Indian medicine, known as Ayurveda. He is famous for writing books on medicine. He is considered the father of Indian medicine and was from Kashmir.
In simple words: Maharishi Charak, an ancient Indian, was a key figure in Ayurveda and is known as the father of Indian medicine for his writings.

🎯 Exam Tip: Focus on the significant impact and recognition of historical figures in their respective fields.

Question 3. Give the features of Livingness.
Answer: Living things do certain important activities to stay alive. These are called the characteristics of livingness. They include: 1. Movement 2. Respiration 3. Irritability 4. Growth 5. Reproduction 6. Excretion 7. Nutrition 8. Digestion 9. Metabolism 10. Homeostasis 11. To maintain specific territory
In simple words: Living things have special features like movement, breathing, growth, and reproduction that help them stay alive.

🎯 Exam Tip: List all features clearly and ensure they are distinct characteristics.

RBSE Class 11 Biology Chapter 1 Essay Type Questions

Question 1. How Acharya Jagdish Chandra Bose is called as "vigyan ke Ananya Pathik”. Explain?
Answer: Acharya Jagdish Chandra Bose (1858-1937) was called "Vigyan ke Ananya Pathik," meaning a unique traveler of science. He was born on November 30, 1858, in Munshiganj, British India (now Bangladesh), and passed away on November 23, 1937, at the age of 78. He was known for his work on millimeter waves, radio technology, the crescograph (a device for measuring plant growth), and his contributions to plant biology. He studied at Hare School and St. Xavier's School in Kolkata, and later earned degrees from the University of Kolkata and the University of London. In 1920, he became a Fellow of the Royal Society, London. Bose was a brilliant Bengali polymath who excelled as a physicist, biologist, biophysicist, botanist, archaeologist, and science fiction writer. He received notable awards such as the Companion of the Order of the Indian Empire (CIE) in 1903 and the Companion of the Order of the Star of India (CSI) in 1911.
In simple words: Acharya Jagdish Chandra Bose was a great Indian scientist called a "unique traveler of science" because he did important work in many fields like radio, plant studies, and physics.

🎯 Exam Tip: Provide a comprehensive overview of the scientist's life, major discoveries, and recognition to fully explain their title.

Question 2. Give the contribution of following scientists in the field of science-
(a) K.C Mehta
(b) Panchanan Maheswari
Answer:
(a) K.C. Mehta: He was born in Jaipur, Rajasthan, on November 9, 1904, and passed away on May 18, 1966, at 61 years old. He is known for his work on test tube fertilization techniques in flowering plants (angiosperms). (b) Panchanan Maheswari: Born on June 20, 1842, in Amritsar, Punjab, and died on April 8, 1950, in Agra, Uttar Pradesh. He discovered how cereal rust diseases spread in India and wrote about how to control them in 1940. He earned his M.Sc. in Botany in 1914 from Govt. College Lahore and later became a lecturer. He completed his Ph.D. at Cambridge University under Prof. F.T. Bruks, focusing on "Rust diseases of cereals." He was also awarded the Arnold medal in 1914.
In simple words: K.C. Mehta worked on new ways to fertilize plants in test tubes. Panchanan Maheswari found out how rust disease spreads in wheat and how to stop it.

🎯 Exam Tip: For multiple scientists, list each one separately with their birth/death dates and main scientific contributions.

Question 3. What are the characters of Livingness? Explain.
Answer: Living things perform certain important actions that are needed for them to survive. These actions are called characteristics of livingness. (i) Movement: All living things can move, and most animals can move from place to place. Plants also show movements, like flowers opening and closing. (ii) Respiration: Breathing is a key part of all living things. It is a chemical process inside cells that gives them energy (ATP) for all their life activities. (iii) Irritability: All living things can react to changes around them, such as changes in heat or light. (v) Reproduction: All living things make more of their own kind to increase their numbers. Traits and characteristics are passed from parents to offspring through genes during this process.
In simple words: Living things have special features like movement, breathing (respiration), reacting to their surroundings (irritability), and making more of themselves (reproduction) to stay alive.

🎯 Exam Tip: When asked to explain features, provide a brief definition and a simple example or elaboration for each.

Question 4. Differentiate plants and Animals in detail
Answer: It is generally easy to tell plants and animals apart, but it can be a bit harder with very simple plants and animals like Euglena or Volvox. Botanists study them as plants, while zoologists study them as animals. The main differences between plants and animals are: (i) Growth: Plants grow in specific areas due to special tissues called meristematic tissues. These tissues at the tips of stems and roots cause upward growth, while lateral meristem helps in increasing thickness. Animals do not have these specific tissues, and their growth is more spread out. Plants grow throughout their entire life, but animals usually stop growing after reaching a certain age, except for healing. (ii) Movements: Animals can move from one place to another (locomotion). Most plants, except for very tiny ones, cannot move around. They stay fixed in one place using their roots. (iii) Photosynthesis: Plants have a green substance called chlorophyll, which allows them to make their own food using sunlight, water, and carbon dioxide. This process is called photosynthesis. Animals do not have chlorophyll and cannot make their own food; they get food by eating plants or other animals. So, plants are "autotrophs" (self-feeders), and animals are "heterotrophs" (other-feeders). (iv) Absorption of mineral salts: Plants need mineral salts for different life processes. They absorb these salts, which are dissolved in water, from the soil through their roots. Animals get these necessary mineral salts by eating food.
In simple words: Plants and animals are different in how they grow (plants grow all their lives in specific spots, animals stop growing), how they move (animals move around, plants stay put), how they get food (plants make their own food using sunlight, animals eat others), and how they get minerals (plants absorb from soil, animals eat).

🎯 Exam Tip: When differentiating, use clear, distinct points for comparison and provide examples where helpful.