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dem82 [27]
3 years ago
14

Explain how the water vascular system allows an echinoderm to move along the ocean floor. Please help!

Biology
2 answers:
meriva3 years ago
4 0

Water gets into the water vascular system through an opening in the echinoderm's body. When the animal contracts its muscles, the water is forced through the system and into the tube feet. The tube feet act as suction cups, gripping the surface below. When the echinoderm retracts its muscles, the tube feet retract and let go of the surface. This series of contractions and retractions allows the animal to move along the ocean floor.

edge

astra-53 [7]3 years ago
3 0

Answer: Sea stars move using a water vascular system. Water comes into the system via the madreporite. It is then circulated from the stone canal to the ring canal and into the radial canals.

Explanation: The radial canals carry water to the ampullae and provide suction to the tube feet.

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Kamila [148]

Answer:

Nutrient cycle is a process  of movement, reuse or recycling of nutrients in that particular environment. They are for both living and nonliving things, elements like carbon, oxygen are recycled through such cycles.

Nutrient cycle in an ecosystem involve:

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4 0
4 years ago
The analysis of the nitrogenous bases of the nucleic acid of a newly discovered virus showed 20% adenine, 40% guanine, 10th% thy
Delvig [45]

Answer: The viral nucleic acid is most likely Deoxyribonucleic acid (DNA)

Explanation:

Unlike ribonucleic acid (RNA) where uracil can be found, thymine alongside adenine, cytosine and guanine are only found in DNA.

Thus, the presence of 10% thymine in the newly discovered virus makes its analyzed nucleic acid to be deoxyribonucleic acid (DNA)

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4 years ago
FREEPOINTS but u gotta say chaaa
Oduvanchick [21]

Answer:

I ate a chaaancleta

Explanation:

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6 0
3 years ago
Read 2 more answers
During a ________ moon, we see one whole side of the Moon here on Earth.
Vinil7 [7]
The answer is Crescent. 
<span>During a crescent moon, we see one whole side of the Moon here on Earth.
</span>

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<span>>Full Moon            - Brightest lunar phase.</span>

7 0
3 years ago
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An active marine predator is found possessing these characteristics: a series of tentacles (modified from the foot), a highly de
AfilCa [17]

Cephalopoda

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But cephalopods are not at all fishes. They are molluscs.

They belong to Class Cephalopoda of phylum Mollusca.

Like other molluscs, these are also soft bodied, but have a series of tentacles that actually developed from theprimitive foot.

Cephalopods have a well developed nervous system and have large bulging eyes.

Examples of cephalopods are, octopus, giant squid etc.

Considering all the above characteristics, we can conclude that the predator stated in the question is most likely to belong to the clade cephalopoda.

8 0
4 years ago
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