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andre [41]
3 years ago
10

What evolutionary changes were essential to the development of complex body plans?

Biology
1 answer:
andrezito [222]3 years ago
3 0

The answer is C. This was achieved through gene regulatory networks. The ability of the cells to segment and differentiate gave the metazoans a great advantage. This is thought to have begun in the Cambrian period with complete bodies existing by the Paleozoic era.






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which of the statements is true of the gastric cavity of cnidarians? digestive enzymes released into the gastric cavity allow th
podryga [215]

This sentence is true in the case of gastric cavity of cnidarians - digestive enzymes released into the gastric cavity allow the consumption of whole prey such as fish.

Extracellular digestion is carried out by cnidarians, in which the cells that line the gastrovascular canal receive the nutrients and enzymes split down the food particles. With only one opening, the gastrovascular cavity that doubles as both the mouth and the anus in cnidarians acts as their only digestive system. There is only one entrance in the central gastro-vascular cavity, which serves as both a mouth and a drain for waste. Digestion occurs both within and outside of cells.

Cnidarians consume food through their lips, and the coelenteron then breaks it down. Waste products are subsequently eliminated either via the mouth or via cell surface via water circulation, while nutrients are then sent to other parts of the body for use.

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1 year ago
8. Define cephalization. What is its relationship to bilateral symmetry?
Burka [1]
9. A mesoderm is a germ layer that arises during gastrulation and is the middle layer of the embryo. An example of inverterbrate with mesoderm is
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5 0
3 years ago
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What is the label F?
anyanavicka [17]

Answer:

c

Explanation:

7 0
3 years ago
Gina is lactose intolerant but she loves to eat cheesy fries from her local restaurant. What do you suggest Gina does differentl
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3 0
2 years ago
Which plant cell organelle helps maintain the shape of the cell by helping to maintain turgor pressure?
dlinn [17]

Answer: Vacuole

Explanation:

The vacuole occupies on average 50% of the cell volume, oscillating between 5 and 95%. It is a fluid-filled, membrane-wrapped gallbladder. The vacuoles perform numerous functions because, in addition to accumulating nutrients, metabolites, and catabolites, they serve as deposits of specific substances such as proteins, opium, dairy and also various poisonous or unpleasant taste substances, which protect the plant against its predators.

Vacuoles are structures that participate in the maintenance of cell turgor, which pulls the cytoplasm against the cell wall as air tightens the air chamber against the tire. When water is lacking, the plant wilts due to decreased intracellular turgor.

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3 years ago
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