Our Environment: AP 10th Class Biology Important 4, 2, 1 Mark Questions for SSC Board Exams

These Chapter-wise Important Questions are designed to help students familiarize themselves with the exam pattern, question types, and marking scheme. By practicing these Important Questions, students can enhance their preparation and boost their confidence for the upcoming exams.

Below are the SCERT-released Important Biology Questions from the chapter Our Environment, useful for SSC board exams 2025.

Biology: Our Environment Important 4 Mark Questions

1. Why is damage to the ozone layer a cause for concern? What steps are being taken to
 minimize this damage?
2. Our activities will affect the environment.’’ Support the statement by giving instances for positive and negative effects on the environment.
3. Answer the given questions based on the picture.
 (1) Name an organism that can be placed at the producers level.
 (2) Give an example for the secondary consumer.
 (3) Give an example for the Tertiary consumer.
 (4) What will happen, if primary consumers are removed
 from the trophic level?
4. What precautions do you take to reduce ozone depletion?
5. What precautions do you suggest to reduce the effects of non-biodegradable wastes?
6. Suggest some methods to reduce chemical pesticides in agriculture.
7. Write some slogans on ozone layer protection.
8. Write some slogans to make people aware on the reduction of chemical pesticides.

Biology: Our Environment Important 2 Mark Questions

1. What is Biological magnification? Explain with an example.
2. Give any two ways in which non-bio-degradable substances would affect the environment.
3. What is the role of decomposers in an ecosystem?
4. What is ozone and how does it affect any ecosystem?
5. Write two examples of biotic and abiotic components by taking an ecosystem as an example.
6. Predict the reason for food chains having only three or four trophic levels?
7. What will happen, if we kill all the organisms in one trophic level?
8. The amount of ozone in the atmosphere began to drop sharply in the 1980s. This decrease has
been linked to synthetic chemicals like chlorofluorocarbons (CFCs) which are used as refrigerants and in fire extinguishers. In 1987, the United Nations Environment Programme (UNEP)
succeeded in forging an agreement to freeze CFC production at 1986 levels. It is now mandatory
for all the manufacturing companies to make CFC-free refrigerators throughout the world.
Read the passage and answer the given questions.
(1) Name the gases that cause ozone depletion.
(2) Expand UNEP.

Biology: Our Environment Important 1 Mark Questions

1. Give an example each for biodegradable and non-biodegradable wastes?
2. Give an example each for natural and artificial ecosystems.
3. Expand CFC.
4. What is the main source of energy for an Ecosystem?
5. Write a food chain belonging to an aquatic ecosystem.
6. What would happen if all producers in an ecosystem die?
7. What would happen if there are no decomposers in an Ecosystem?
8. What would you conclude regarding the energy flow in an Ecosystem basing on the flow chart
given?

9. Which process is represented in the form of the given equation?

10. What is shown in the picture given?

11. Write a slogan on environmental protection.

Published date : 22 Jan 2025 01:36PM