True or false on ecosystems (CBSE Cl 10)

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Only about 10 percent of energy passes to the next trophic level.

2. Statement is true

   Yes

   Statement

   Producers are usually green plants in terrestrial ecosystems.

3. Statement is true

   No

   Statement

   Energy in an ecosystem flows in a cycle, returning to producers.

4. Statement is true

   Yes

   Statement

   Decomposers help return nutrients to the soil.