Question

1. what is the primary role of primary producers in a marine food web?

a) to break down organic matter
b) to capture solar energy and produce food
c) to consume other organisms
d) to act as top predators

1. in a marine food web, which of the following organisms would be considered a secondary consumer?

a) phytoplankton
b) zooplankton
c) small fish that eat zooplankton
d) sea cucumbers

1. what are the apex predators in a marine food web known as?

a) tertiary consumers
b) primary consumers
c) secondary consumers
d) decomposers

1. which trophic level includes organisms like bacteria and fungi?

a) primary producers
b) primary consumers
c) secondary consumers
d) decomposers

1. what is one of the main consequences of overfishing in marine ecosystems?

a) increased biodiversity
b) enhanced habitat restoration
c) improved water quality
d) collapse of fish populations

Explanation:

1. Primary producers in a marine food - web, like phytoplankton, perform photosynthesis to capture solar energy and produce food.
2. Secondary consumers eat primary consumers. Small fish that eat zooplankton (primary consumers) are secondary consumers. Zooplankton are primary consumers, phytoplankton are primary producers, and sea cucumbers can be detritivores.
3. Apex predators are tertiary consumers at the top of the food - web. Primary consumers eat primary producers, secondary consumers eat primary consumers, and decomposers break down organic matter.
4. Bacteria and fungi are decomposers that break down dead organisms and waste materials.
5. Overfishing leads to the collapse of fish populations as too many fish are removed from the ecosystem, disrupting the balance.

Answer:

1. b) To capture solar energy and produce food
2. c) Small fish that eat zooplankton
3. a) Tertiary consumers
4. d) Decomposers
5. d) Collapse of fish populations