3 years ago

What has a glassy shell called a frustule?

2 answers:

5 0

A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>

ahrayia [7]3 years ago

3 0

That would be a DIATOM

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Answer:

$\frac{1}{27}$

Explanation:

Consider the small sphere radius is x1.

therefore the large sphere radius is 3x1

As we know that volume of sphere= $\frac{4}{3} \pi \ r^{3}$

So ,

Volume of the small sphere

= $\frac{4}{3}\pi \ x1^{3}$

also Volume of the large sphere

= $\frac{4}{3}\pi \ 3x1^{3}$

$\frac{volume\ of\ small\ sphere}{volume\ of\ large\ sphere} \ =\ \frac{\frac{4}{3}\ \pi\ x1^{3} }{\frac{4}{3}\ \pi\ 3x1^{3} }$

On solving the equation

volume of large sphere=27 * volume of small sphere

Hence $\frac{1}{27} \ times\ volume\ of\ small\ sphere\ is\ smaller\ then\ the\ larger\ sphere$

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4 years ago

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Valentin [98]

Answer:

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(a) Deletion (b) duplication (c) inversion and (d) translocation.

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3 years ago

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Vaselesa [24]

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2 years ago

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What is the term for a plant that produces a seed with a protective cover?

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