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CUET UG Biology — practice by topic

Browse 249 questions across 4 Biology topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Biology topics

Biotechnology and Applications (112)Reproductive Health (61)Ecology and Environment (40)Biology in Human Welfare & Health (36)

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Which of these is a terrestrial ecosystem?Read the answer and worked solution →Which is a man-made ecosystem?Read the answer and worked solution →The basic energy input to any ecosystem is:Read the answer and worked solution →Green plants in an ecosystem are called:Read the answer and worked solution →

Worked practice questions

Which of these is a terrestrial ecosystem?

  1. A grassland
  2. A shallow pond
  3. A river mouth
  4. A large lake
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Correct answer: A. A grassland

1. Terrestrial ecosystems sit on land. 2. Ponds, lakes and estuaries are aquatic instead. 3. Forest, grassland and desert are terrestrial ecosystems. 4. So the answer is a grassland. _Source: syllabus Biology, Ch 12 'Ecosystem'_

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Which is a man-made ecosystem?

  1. A salt marsh
  2. A crop field
  3. A rainforest
  4. A wide river
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Correct answer: B. A crop field

1. Most ecosystems form without human help. 2. A few are built and maintained by people. 3. Crop fields and aquaria are man-made ecosystems. 4. So the answer is a crop field. _Source: syllabus Biology, Ch 12 'Ecosystem'_

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The basic energy input to any ecosystem is:

  1. Chemical fuel
  2. Nuclear power
  3. Solar energy
  4. Tidal energy
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Correct answer: C. Solar energy

1. Producers need a constant supply of energy. 2. They capture it by photosynthesis. 3. A constant input of solar energy sustains the ecosystem. 4. So the answer is solar energy. _Source: syllabus Biology, Ch 12 'Ecosystem'_

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