True or false

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Decomposition is largely an oxygen-requiring process.

2. Statement is true

   Yes

   Statement

   The detritus food chain begins with the death of an organism.

3. Statement is true

   Yes

   Statement

   The grazing food chain carries most energy in aquatic systems.

4. Statement is true

   No

   Statement

   Ninety per cent of energy passes to the next trophic level.

5. Statement is true

   No

   Statement

   The marine pyramid of biomass is upright.

6. Statement is true

   No

   Statement

   Plants capture about half of the radiation reaching them.

Instructions

Decide whether each statement is true or false.

Explanation