SEBA Class 10 Science Important Chapter 15 Our Environment

SEBA Class 10 Science Important Chapter 15 Our Environment Solutions English Medium As Per SEBA New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 10 Science Additional Solutions in English and select need one. SEBA Class 10 General Science Additional Notes English Medium Download PDF. SEBA Important Solutions for Class 10 Science.

SEBA Class 10 Science Important Chapter 15 Our Environment

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 10 General Science Additional Question Answer are part of All Subject Solutions. Here we have given NCERT Class 10 Science Important Question Answer English Medium for All Chapters, You can practice these here.

Our Environment

Chapter: 15

IMPORTANT QUESTION ANSWER

Q.1. What is the functional unit of the environment comprising of the living and nonliving components called? 

Ans: The functional unit of the environment comprising of the living and non-living components called Ecosystem . Ecosystem is the functional unit of the environment comprising of the living and non living components.

Q.2. Name two biodegradable waste. 

Ans: 1. Cattle dung.

2. Compost. 

Q.3. Name two non-biodegradable waste. 

Ans: 1. D.D.T. 

2. Plastics.

Q.4. Write four examples of ecosystem.

Ans: 1. A grassland.

2. A forest.

3. A desert.

4. A river. 

Q.5. Write two examples of artificial ecosystem.

Ans: 1. Crop-fields.

2. Aquarium.

Q.6. Name two natural ecosystem. 

Ans: 1. A forest.

2. A river.

Q.7. Which one of the following is not a terrestrial ecosystem? 

(a) Forest.

(b) Grassland.

(c) Aquarium.

(d) Desert.

Ans: (c) Aquarium.

Q.8. State whether the following statements are true or false: 

(a) In biology, human beings are called producers. 

(b) Secondary consumers and tertiary consumers, both are carnivores. 

Ans: (a) False.

(b) True. 

Q.9. Which of the following belong to the same trophic level? 

(a) Goat.

(b) Spider.

(c) Plants.

(d) Hawk.

(e) Rat.

Ans: (a) Goat and (e) Rat.

Q.10. Which of the following belong to the same trophic level? 

(a) Tree.

(b) Frog.

(c) Snake.

(d) Grass.

(e) Lizard. 

Ans: (a) Tree and (d) Grass. 

Q.11. Name the organisms belonging to the second and the fourth trophic levels in the food chain comprising the following: 

(a) Frogs.

(b) Plants.

(c) Snakes.

(d) Hawks.

(e) Insects.

Ans: Second trophic level: Insects 

Fourth trophic level: Snakes. 

Q.12. In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum? 

Ans: The Bird. 

Q.13. If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body? 

Ans: The Cat. 

Q.14. Name two waste materials which can be recycled. 

Ans: Paper and plastics. 

Q.15. If 5 joules of energy is available at producer level (plants) then how much energy will be transferred to the lion in the following food chain? Plants → Goat  → Lion 

Ans: 0.05J