Trophic Levels

Q. Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?

Q.

What is the basis for the categorization of producers, consumers and decomposers in an ecosystem?

1. Mode of digestion

2. Mode of obtaining sustenance

3. Mode of habitat

4. Patterns of growth

Q.

Choose the option that correctly matches the groups of organisms in an ecosystem with the specific terms used for them.

$$\begin{array}{ccc}1& 2& 3\\ Greenplants& Deer& Bacteria\\ Grass& Goat& Fungi\\ Aquaticplants& Insects& Mushrooms\end{array}$$

1. 1- carnivores, 2-herbivores, 3- saprophytes

2. 1- herbivores, 2- decomposers, 3- parasites

3. 1- producers, 2- consumers, 3- decomposers

4. 1- decomposers, 2- producers, 3- consumers

Q.

Autotrophs are also known as __.

Q.

Complete the trophic levels in the following food chain:

Producers → ? → Secondary consumers → ? → Decomposers

1. primary consumers; tertiary consumers

2. insectivores; carnivores

3. tertiary consumers; primary consumers

4. carnivores; herbivores

Q.

The various steps in the food chain are called____.

1. Trophic levels

2. Nutrition levels

3. Energy levels

4. Ecosystem levels

Q. Why do food chains and food webs start with green plants?

1. Because plants can absorb the Sun's energy to produce food.

2. Because most green plants are tasty.

3. Because most insects eat green plants.

4. Because they can synthesize food without water.

Q.

Which of the following are the correct terms used for the group of organisms mentioned below?

1. Grass, Fern, Moss

2. Lion, Cow, Rat

3. Bacteria, Fungi

1. 1- carnivores, 2-herbivores, 3- saprophytes

2. 1- producers, 2- consumers, 3- decomposers

3. 1- herbivores, 2- decomposers, 3- parasites

4. 1- decomposers, 2- producers, 3- consumers

Q.

The major role in maintaining food and energy levels in an ecosystem is played by:

1. Decomposers

2. Autotrophs

3. Heterotrophs

4. Parasites

Q.

Complete the trophic levels in the following basic food chain.

Producers $\to$ ? $\to$ Secondary consumers $\to$ ? $\to$ Decomposers

1. Primary consumers; tertiary consumers

2. Insectivores; carnivores

3. Carnivores; herbivores

4. Tertiary consumers; primary consumers