CBSE EXAMINATION PAPER-2022
SCIENCE
(Solved)
General Instructions :
Read the following instructions carefully and follow them :
- This question paper contains 1 questions. All questions are compulsory.
- This question paper is divided into 1 sections.
- Section A – questions number 1 to 1 are very short answer
- There is no overall choice given in the question paper. However, an internal choice has been provided in few questions.
- Use of calculator is NOT allowed.
Section A
Question 1.
[2 Marks]
(i) List two human-made ecosystems.
(ii) "We do not clean a pond in the same manner as we do in an aquarium." Give reason to justify this statement.
Answer: Two examples of human-made ecosystems are gardens and crop-fields. Unlike aquariums, ponds are naturally balanced ecosystems, harboring a variety of organisms that contribute to their health. In contrast, aquariums are confined spaces where water quality can deteriorate quickly due to waste, which requires regular cleaning to maintain a sustainable environment for the fish. Ponds naturally filter and balance themselves, thus requiring less frequent direct human intervention.
Other Years — SCIENCE