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10 months ago

Which of the following provided structural evidence for the concept of a common ancestor

1 answer:

8 0

Physical characteristic was present in a common ancestor, species may have similar physical characteristics (homologous structures).

<h3>What are homologous structures?</h3>

A physical trait that distinguishes two or more species, such as a complicated bone structure or a body plan, may have been passed down from a common ancestor.

A common ancestor's evolutionary history causes physical characteristics to be homologous.

Sometimes, structures in an organism are similar to crucial structures in other animals, but they no longer serve the primary ancestral role. Vestigial structures are these structures, which are frequently scaled down.

Therefore, Physical characteristic was present in a common ancestor, species may have similar physical characteristics (homologous structures).

To learn more about homologous organs , refer to the link:

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Molecules "pumped" in or out from low to high concentration

Crazy boy [7]

That would be active transport

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2 years ago

All the populations of organisms living close enough together for potential interaction make up __________.

rosijanka [135]

All the populations of organisms living close enough together for potential interaction make up a community!

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3 years ago

Read 2 more answers

Which of the following diseases is caused by a helminth?

rosijanka [135]

Answer:

schistosomiasis

Explanation:

Helminths are the parasites with a worm-like body structure and include the flatworms, tapeworms, and nematodes.

Trematode flatworms are the flatworms that cause the disease schistosomiasis. The schistosomiasis parasite is spread when freshwater snail releases its larva in the water bodies which in turn enter the healthy person bathing in the water.

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2 years ago

Contractions per M

Andreyy89

To make Paramecium Contractile vacuole concentration graph useful the salt concentrations descriptions should replaced with actual values.

Thus, option "A" is correct.

What is Paramecium Contractile vacuole

"It is a sub-cellular structure (organelle) involved in osmoregulation."

<h3>What is a graph?</h3>

"A diagram (such as a series of one or more points, lines, line segments, curves, or areas) that represents the variation of a variable in comparison with that of one or more other variables."

<h3>What does the graph in the given question depict?</h3>

It shows that the Paramecium Contractile Vacuole concentration per minute decreases as salt concentration increases.

But the concentration of salt is not mention in quantity so its not clear what are the lowest and highest concentration affecting Paramecium Contractile Vacuole.

Hence, the Paramecium Contractile Vacuole concentration graph can be more useful if the actual values of salt concentration will be mentioned.

To know more about Paramecium Contractile Vacuole here

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2 years ago

What happens that makes rain start to fall from a cloud?

Shkiper50 [21]

Answer:

when water vapor turns into clouds

Explanation:

Water vapor turns into clouds when it cools and condenses—that is, turns back into liquid water or ice. ... In the cloud, with more water condensing onto other water droplets, the droplets grow. When they get too heavy to stay suspended in the cloud, even with updrafts within the cloud, they fall to Earth as rain.

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2 years ago