ICSE Worksheet for chapter-13 Our Environment class 10

Worksheet For class 10

This page is prepared by the Academic team of Physics Wallah which consists of ICSE Board Worksheet for Class 10 Biology. Students of Class 10 Biology can get a free Worksheet for Class 10 Biology in PDF format prepared as per the newest syllabus and examination pattern in your schools.

Standard 10 students can practice questions and answers which are given here for Biology in Grade 10 that will help them to improve their knowledge of all important chapters and their topics. Students can also download free pdf of Class 10 Biology Notes prepared by teachers and solve important problems provided here with solutions on daily basis to get more scores in school exams and tests.

If any students need to take the online test to check their concepts or undertstanding then they can visit Biology Quiz for Class 10.

Objective Type Questions

Q1. Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the:

  1. Ecosystem
  2. Food web
  3. Ecological pyramid
  4. Food chain

Q2. The excessive exposure of humans to ultraviolet rays results in:

  1. Damage of immune system
  2. Damage to lungs
  3. Skin cancer
  4. Peptic ulcers
  • 1 and 2
  • 2 and 4
  • 1 and 3
  • 3 and 4

Q3. Which of the following groups contain only biodegradable items ?

  1. Grass, flowers and leather
  2. Grass, wood and plastic
  3. Fruit-peels, cake and lime-juice
  4. Cake, wood and grass

Q4. Which of the following constitute a food chain ?

  1. Grass, wheat and mango
  2. Grass, goat and human
  3. Goat, cow and elephant
  4. Grass, fish and goat

Subjective Type Questions

Q5. Will the impact of removing all the organisms in a trophic level be different for different trophic levels ? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?

Q6. If all the waste we generate is biodegradable, will this have no impact on the environment ?

Q7. What are trophic levels ? Give an example of a food chain and state the different trophic levels in it.

Q8. What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem ?

Q9. How can you help in reducing the problem of waste disposal ? Give any two methods.

Q10. List the biotic and abiotic components of an ecosystem.

Q11. Difference between biodegradable and non-biodegradable pollutants. Give examples.

Q12. Write about primary pollutants and secondary pollutants.

Q13. Write a note en ozone hole, when is the international ozone day observed.

Q14. Answer :

  1. A pollutant largely responsible for acid rain.
  2. Noise is regarded as unwanted sound. Why?
  3. Gaseous pollutant.

Q15. Write a short note on global warming.

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