Planarians are free-living flatworms. Most species live in fresh water, but some species live in salt water. Some even live on land. These flatworms have the ability to replace lost body parts through a process called regeneration. Planarians are used to study regeneration and disease-causing worms.

Which statement describes freshwater planarians and their environment?

a) Without osmoregulation, planarian cells will shrivel.
b)The planarians live in a hypertonic environment.
c)The planarians’ internal solute concentration is equal to that of their environment.
d)The planarians need to avoid taking in too much water from their environment.

Question

23-05-2022
Biology

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Planarians are free-living flatworms. Most species live in fresh water, but some species live in salt water. Some even live on land. These flatworms have the ability to replace lost body parts through a process called regeneration. Planarians are used to study regeneration and disease-causing worms.

Which statement describes freshwater planarians and their environment?

a) Without osmoregulation, planarian cells will shrivel.
b)The planarians live in a hypertonic environment.
c)The planarians’ internal solute concentration is equal to that of their environment.
d)The planarians need to avoid taking in too much water from their environment.

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saimaparvezVT saimaparvezVT · Answer 1 · 2022-05-24T13:18:45+02:00

The statement describes freshwater planarians and their environment is the d)The planarians need to avoid taking in too much water from their environment.

What is the Planaria environment?

It may be observed in lots of components of the arena in freshwater rivers, streams, or ponds. They live on the bottom of rocks, leaves, and different gadgets in shallow waters in addition to in aquatic plants which include Elodea and filamentous algae.

The planarian has a system of tubules extending all through its frame from the anterior to posterior on each sided of the frame. These tubules are known as protonephridia and that they gather each extra water and plenty of the nitrogen waste. The tubules have pores that lead out of the frame.