NEET Biology Ecosystem MCQs Set 11

Answer: (d) Tansley

Explanation:
1. A. G. Tansley coined the term ecosystem in 1935.

Teacher's Note:
1. Key fact: A. G. Tansley coined the term ecosystem in 1935.
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Biomes

Explanation:
1. The largest ecological units with characteristic climate and vegetation are called biomes.

Teacher's Note:
1. Key fact: The largest ecological units with characteristic climate and vegetation are called biomes.
2. Link this concept with the related terms in the chapter notes.

Answer: (d) Stratification

Explanation:
1. Energy flow, productivity and decomposition are functions of an ecosystem; stratification is a structural feature.

Teacher's Note:
1. Key fact: Energy flow, productivity and decomposition are functions of an ecosystem; stratification is a structural feature.
2. Link this concept with the related terms in the chapter notes.

Answer: (b) Scavengers

Explanation:
1. Vultures feed on dead animals, so they are scavengers.

Teacher's Note:
1. Key fact: Vultures feed on dead animals, so they are scavengers.
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Producers

Explanation:
1. Energy is stored in greatest amount at the producer level, and decreases at each higher trophic level.

Teacher's Note:
1. Key fact: Energy is stored in greatest amount at the producer level, and decreases at each higher trophic level.
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Sunlight

Explanation:
1. Sunlight is the ultimate source of energy for almost all ecosystems.

Teacher's Note:
1. Key fact: Sunlight is the ultimate source of energy for almost all ecosystems.
2. Link this concept with the related terms in the chapter notes.

Answer: (c) Both the above

Explanation:
1. An ecosystem is important for both energy flow and nutrient cycling.

Teacher's Note:
1. Key fact: An ecosystem is important for both energy flow and nutrient cycling.
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Any functional unit that includes the whole community in a given area interacting with the abiotic factors

Explanation:
1. An ecosystem is a functional unit including the whole community interacting with the abiotic environment.

Teacher's Note:
1. Key fact: An ecosystem is a functional unit including the whole community interacting with the abiotic environment.
2. Link this concept with the related terms in the chapter notes.

Answer: (c) Tansley

Explanation:
1. Tansley described the ecosystem as the fundamental unit of structure and function in nature.

Teacher's Note:
1. Key fact: Tansley described the ecosystem as the fundamental unit of structure and function in nature.
2. Link this concept with the related terms in the chapter notes.

Answer: (d) Oceans

Explanation:
1. Oceans form the largest ecosystem on earth.

Teacher's Note:
1. Key fact: Oceans form the largest ecosystem on earth.
2. Link this concept with the related terms in the chapter notes.

Answer: (c) Ecosystem of artificial lakes & dams

Explanation:
1. Artificial lakes and dams are man-made ecosystems, unlike natural forests and grasslands.

Teacher's Note:
1. Key fact: Artificial lakes and dams are man-made ecosystems, unlike natural forests and grasslands.
2. Link this concept with the related terms in the chapter notes.

Answer: (b) Natural ecosystem

Explanation:
1. A pond is a natural aquatic ecosystem.

Teacher's Note:
1. Key fact: A pond is a natural aquatic ecosystem.
2. Link this concept with the related terms in the chapter notes.

Answer: (c) Both 1 & 2

Explanation:
1. Nepenthes photosynthesises (producer) and traps insects for nitrogen (consumer), so it is both.

Teacher's Note:
1. Key fact: Nepenthes photosynthesises (producer) and traps insects for nitrogen (consumer), so it is both.
2. Link this concept with the related terms in the chapter notes.

Answer: (c) Decomposers

Explanation:
1. Decomposers break down dead matter and return minerals to the soil, recycling nutrients.

Teacher's Note:
1. Key fact: Decomposers break down dead matter and return minerals to the soil, recycling nutrients.
2. Link this concept with the related terms in the chapter notes.

Answer: (d) Organisms linked in food chain

Explanation:
1. Trophic levels are formed by organisms linked in a food chain.

Teacher's Note:
1. Key fact: Trophic levels are formed by organisms linked in a food chain.
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Primary producers

Explanation:
1. Green plants fix solar energy in a forest and are primary producers.

Teacher's Note:
1. Key fact: Green plants fix solar energy in a forest and are primary producers.
2. Link this concept with the related terms in the chapter notes.

Answer: (b) Trap solar energy and convert it into chemical energy

Explanation:
1. Producers trap solar energy and convert it into chemical energy of food.

Teacher's Note:
1. Key fact: Producers trap solar energy and convert it into chemical energy of food.
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Consumer

Explanation:
1. Man is a consumer in the food chain (omnivore).

Teacher's Note:
1. Key fact: Man is a consumer in the food chain (omnivore).
2. Link this concept with the related terms in the chapter notes.

Answer: (a) Food chain

Explanation:
1. Plant, herbivore and carnivore form a single linear series, which is a food chain.

Teacher's Note:
1. Key fact: Plant, herbivore and carnivore form a single linear series, which is a food chain.
2. Link this concept with the related terms in the chapter notes.

Answer: (d) the apex of the food pyramid

Explanation:
1. The peacock eats the snake, which is at the top of this chain, so it is the apex.

Teacher's Note:
1. Key fact: The peacock eats the snake, which is at the top of this chain, so it is the apex.
2. Link this concept with the related terms in the chapter notes.