Trophic Levels

Q. A community of both living organisms and non-living components of a particular region that interact with each other in order to coexist is called as __________

1. Diversity
2. Ecosystems
3. Habitat
4. Environment

Q.

In a natural ecosystem, decomposers include.

1. Microscopic animals

2. Bacteria and fungi

3. The above two types of organisms plus microscopic animals

4. None of the above

Q.

Rearrange the following according to their trophic level in a food chain: fish, zooplankton, seal, phytoplankton.

Q. Define ecosystem.

Q.

Complete the trophic levels in the following basic food chain.

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

1. Carnivores; herbivores

2. Primary consumers; tertiary consumers

3. Tertiary consumers; primary consumers

4. Insectivores; carnivores

Q.

Give the scientific term for the green plants which synthesize food?

Q.

Humans have an all purpose (capable of digesting both plant and animal food) digestive system because humans are generally

1. Carnivores

2. Herbivores

3. Insectivores

4. Omnivores

Q.

What are the II and III trophic levels?

Q. Fungi is an example of a _____.

1. consumer
2. decomposer
3. carnivore
4. producer

Q. The best source of energy in the environment is

1. Water
2. Soil
3. Trees
4. Ponds

Q.

What are trophic levels? Give an example of a food chain and state the different trophic levels in it.

Q. Identify the likely organisms (a), (b), (c) and (d) in the food web shown below.

1. A- Deer, B- Rabbit, C- Frog, D- Rat
2. A- Dog, B- Squirrel, C- Bat, D- Deer
3. A- Rat, B- Dog, C- Tortoise, D- Crow
4. A- Squirrel, B- Cat, C- Rat, D- Pigeon

Q.

What will happen if

(a) We go on cutting trees.

(b) The habitat of an animal is disturbed.

(c) The top layer of soil is exposed.

Q. Define ecosystem.