4 years ago

Why do biologists believe that a primitive choanoflagellate protist is the ancestor to all animals?

1 answer:

8 0

Since an animal only becomes more complex, and not simpler, an ancestor to all organisms would have to be the most simple and primitive organism.

You might be interested in

Which pair correctly associates a physiological process with the appropriate vitamin? question 5 options:

gayaneshka [121]

The answer is B.Normal vision and Vitamin A

6 0

3 years ago

Biologists sometimes divide living organisms into two groups: autotrophs and heterotrophs. these two groups differ in ________.

Alina [70]

Their source of carbon. Autotrophs obtain their carbon from inorganic sources such as from atmospheric carbon dioxide. Examples of autotrophs include plants, and euglena ( a protist).
Heterotrophs on the other hand, obtain their carbon from organic sources such as other organisms. Examples of heterotrophs include all secondary consumers, and decomposers.

8 0

3 years ago

An important tool to help you exercise when you don t want is to<br>

DanielleElmas [232]

Answer:A form of motivation always helps

Explanation:

3 0

3 years ago

some plant seeds live through cold winters but do not sprout until spring. in winter these seeds are ________

Gwar [14]

the answer is dormant

7 0

3 years ago

When you go to check on your sleeping child, you observe that his eyes are moving back and forth rapidly under his eyelids. it i

Gre4nikov [31]

If your sleeping child eyes is moving back and forth while his eyelids are closed it is likely that he is sleep

3 0

4 years ago