Chapter Exam

Chapter 8 ZOOLOGY : Ecology and Environment — Online MCQ Test

Q: Which of the following is the basic functional unit of an ecosystem?

Answer: C. Ecosystem — An ecosystem is the basic functional unit where biotic and abiotic components interact. It includes energy flow and nutrient cycling.

Q: In a food chain, the first trophic level is occupied by:

Answer: A. Producers — Producers such as green plants capture solar energy and form the first trophic level. All other organisms depend on them directly or indirectly.

Q: If a food chain is: Grass → Deer → Tiger, which trophic level does the deer occupy?

Answer: B. Second trophic level — Grass is the producer at the first trophic level. Deer, which feeds on grass, is a primary consumer and occupies the second trophic level.

ZOOLOGY · CLASS 11 INTER I YEAR · Andhra State Board

Practice Chapter 8 ZOOLOGY : Ecology and Environment with a free chapter-wise online MCQ test for Andhra State Board CLASS 11 INTER I YEAR ZOOLOGY. This chapter covers: The final chapter details ecosystem components energy flow biogeochemical cycles population ecology environmental issues and biodiversity conservation strategies.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 8 ZOOLOGY : Ecology and Environment — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 11 INTER I YEAR ZOOLOGY — Chapter 8 ZOOLOGY : Ecology and Environment, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is the basic functional unit of an ecosystem?

A. Population
B. Biome
C. Ecosystem ✓
D. Community

Answer: C. Ecosystem
An ecosystem is the basic functional unit where biotic and abiotic components interact. It includes energy flow and nutrient cycling.

In a food chain, the first trophic level is occupied by:

A. Producers ✓
B. Primary consumers
C. Secondary consumers
D. Decomposers

Answer: A. Producers
Producers such as green plants capture solar energy and form the first trophic level. All other organisms depend on them directly or indirectly.

Which statement best describes the 10% law of energy flow?

A. 10% of energy is lost as heat at each trophic level
B. Only 10% of energy is transferred from one trophic level to the next ✓
C. 10% of producers are eaten by herbivores
D. 10% of biomass is recycled by decomposers

Answer: B. Only 10% of energy is transferred from one trophic level to the next
According to the 10% law, only about one-tenth of the energy at one trophic level passes to the next level. The rest is lost mainly as heat and metabolic activities.

If a food chain is: Grass → Deer → Tiger, which trophic level does the deer occupy?

A. First trophic level
B. Second trophic level ✓
C. Third trophic level
D. Fourth trophic level

Answer: B. Second trophic level
Grass is the producer at the first trophic level. Deer, which feeds on grass, is a primary consumer and occupies the second trophic level.

Which of the following best explains biodiversity conservation by in situ method?

A. Conservation of organisms in zoological parks only
B. Conservation of species in their natural habitat ✓
C. Preservation of dead specimens in museums
D. Artificial breeding in laboratories only

Answer: B. Conservation of species in their natural habitat
In situ conservation protects species in the natural ecosystem where they occur. National parks and wildlife sanctuaries are examples of this method.

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