Hydrosere Quiz 1

Hydrosere Quiz 1

Multiple Choice

What happens in the first step of the phytoplankton stage?

• Ecological disturbances happen before any step in the process happens

• Phytoplankton colonize the body of water which then decays and turns into muck.

• Large animals inhabit the ecosystem by drinking the water away

• Muck is formed at the bottom of a body of water first

Reasoning:

Muck forms at the bottom of the floor once phytoplanktons colonize the water, then decay and die. The rest of the steps aren't able to happen without muck formation. Ecological disturbances don't have to occur for hydrosere to begin.

Multiple Select

Choose all of the correct statements:

• Light is not seen in any step of the hydrosere process

• A marshy soil at the bottom forms as a result of phytoplanktons death

• Submerged plants start to grow during the 2nd stage of the hydrosere process

• The death and decay of submerged plants decrease the shallowness of the water

Reasoning:

Submerged plants are the first vegetation to grow in the second stage. (Submerged Stage) The rest of the statements are false.

Multiple Select

What is the cause of submerged plants dying?

• The shallowness of the water causes the submerged plants to die

• The shallowness increases which allows for the growth of free floating plants which causes the submerged plants die out

• Submerged plants die overtime due to disease

Reasoning:

In the 3rd stage of the hydrosere, once the body of water is shallow enough free-floating plant species inhabit the area. This causes submerged plants to die out.