Our Environment MCQs with answers
Dear candidates you will find MCQ questions of 10th Class - Biology | Chapter: Our Environment here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
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Q. Which one of the following will undergo fastest bio-degradation?
✅ Correct Answer: (D)
Mango pulp
Q. Which of the following is an abiotic component of an ecosystem?
✅ Correct Answer: (A)
Humus
Q. Which one of the following pairs belong to the category of primary consumers?
✅ Correct Answer: (B)
Grasshoppers & cattle
Q. Which of the following chemicals causes depletion of the ozone layer?
✅ Correct Answer: (C)
Chloro fluoro carbon
Q. In a food chain, the third trophic level is always occupied by
✅ Correct Answer: (C)
decomposer
Q. In the given foodchain if the amount of energy at the fourth trophic level is 4 kJ, what will be the energy available at the producer level?
Grass ? Grasshopper ? Frog ? Snake
Grass ? Grasshopper ? Frog ? Snake
✅ Correct Answer: (D)
4000 kJ
Q. Which of the two sets belong to the same trophic level?
✅ Correct Answer: (D)
Frog : Lizard
Q. In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?
✅ Correct Answer: (A)
6000 kJ
Q. Which of the following is the best way for disposal of vegetable and fruit peels?
✅ Correct Answer: (C)
Composting
Q. The problem caused due to ozone hole is
✅ Correct Answer: (B)
damage due to UV radiations
Q. An ecosystem includes
✅ Correct Answer: (C)
both living organisms and non-living objects
Q. Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
✅ Correct Answer: (C)
biomagnification
Q. In an ecosystem, the 10% of energy available for transfer from one trophic level to the next is in the form of
✅ Correct Answer: (C)
chemical energy
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