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IgorC [24]
3 years ago
5

One characteristic that is found only in echinoderms is

Biology
1 answer:
mamaluj [8]3 years ago
8 0
Depression :)......................
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The tube feet of echinoderms that are used for locomotion, capturing prey, and gas exchange are "inflated" by the ________, whic
Y_Kistochka [10]

Answer:

water-vascular system

Explanation:

Echinoderms exhibit several unique features and the presence of a water vascular system is one of them. The water vascular system of these organisms consists of a network of fluid-filled canals and chambers. The marine water enters and exits the system through an opening. This system functions as a hydrostatic skeleton during locomotion.

Tube feet of these organisms are filled with fluid as water enters into them via the canals of the water vascular system lead to them. This inflates the tube feet and serve in locomotion. The water entering through the water vascular system also brings in dissolved oxygen and food particles into the body.

6 0
3 years ago
Why might losing a producer from an ecosystem have a more significant effect on a tertiary consumer than on a primary consumer.
Korolek [52]

Answer:

This would cause the collapse of the entire food web.

Explanation:

Primary consumers which feed on producers directly, would die off. ... However, even these dead organisms would run out and the entire food web would collapse.

6 0
3 years ago
Which property below is shared by both carbohydrates and lipids?
Marina86 [1]
We are asked to determined which of the following choices above will be the correct shared property of a lipid and carbohydrate. To know the answer we must evaluate each of the choices.
a. Both have the same number of oxygen atoms 
- This is incorrect. Oxygen atoms of carbohydrate and lipids are different since 
lipid are usually unsaturated.
b. Both are sources of cellular energy.
- Carbohydrates is the main energy source of human body while lipids are the standby energy source when all the carbohydrates are consumed in the body.
c.Both are dissolvable in water.
-This is incorrect. Lipids are non-polar while water is polar. Like dissolves Like.
d. Both have the same proportion of carbon-hydrogen atoms
-This is incorrect since Lipids are usually double bonded atoms. thus it contain lesser amount of carbon compared to carbohydrate.

Therefore, the correct answer to this is letter B. Both are sources of cellular energy.

5 0
3 years ago
Cell structure responsible for excretion of cell waste
Scrat [10]

Answer:

a

Explanation:

4 0
3 years ago
Percent nitrogen is found in earths atmosphere
Bond [772]

Answer:

78%

Explanation:

Most of the atmosphere is gas, and 21% is oxygen

7 0
4 years ago
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