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iris [78.8K]
3 years ago
5

Which structure found in echinoderms can sometimes perform a similar function as a radula found in some mollusks? This Is A Scie

nce Question
A.foot
B.gill
C.mantle
D.stomach
Physics
2 answers:
kow [346]3 years ago
8 0

Answer: Foot.

Explanation:

Echinoderm means spiny skin. Some example of echinoderms are star fish, sea urchin, sand dollar.

These organisms have no eyes, no brains but they posses tube feet. This feet helps them in respiration, feeding and locomotion.

Tube feet helps in passing food to the oral cavity. This organ performs the similar function to radula in mollusks.

hammer [34]3 years ago
6 0
I think it’s D which is the stomach if not I can get you someone that can help you
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Answer:

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Answer:

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If a car is moving to the left with constantvelocity, one can conclude thatthere mustbe no forces applied to the car.the netforc
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Ocean waves of wavelength 26 m are moving directly toward a concrete barrier wall at 4.0 m/s . The waves reflect from the wall,
Genrish500 [490]

Answer:

a) the distance between her and the wall is 13 m

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Explanation:

Given the data in the question;

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Now, The first antinode is formed at a distance λ/2 from the wall, since the separation distance between the person and wall is;

x = λ/2

we substitute

x = 26 m / 2

x = 13 m

Therefore, the distance between her and the wall is 13 m

b) What is the period of her up-and-down motion?

we know that the relationship between frequency, wavelength and wave speed is;

v = fλ

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we also know that frequency is expressed as the reciprocal of the time period;

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we substitute

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