Concept of Trophic Levels

Q.

What will happen if we kill all the organisms at one trophic level?

Q.

Which one of the following types of organisms occupies more than one trophic level in a pond ecosystem?

1. Phytoplankton

2. Frog

3. Zooplankton

4. Fish

Q.

In an aquatic ecosystem, the trophic level equivalent to cows in grasslands is:

1. Nekton

2. Shark

3. Phytoplankton

4. Zooplankton

Q. Which of the following occupies the same trophic level?

1. Crow and cow
2. Snake and earthworm
3. Tiger and wild boar
4. Deer and bee

Q. Which of the following autotrophs are the dominant producers of marine ecosystems?

1. Benthic brown algae and red algae
2. Benthic diatoms and marine viruses
3. Sea grasses and slime moulds
4. Free floating algae, microalgae, cyanobacteria

Q. Average amount of energy transferred from one trophic level to next is ________.

1. 1.5%
2. 10%
3. 15%
4. 20%