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TEA [102]
3 years ago
15

What is the structure used in reproduction in pteridophytes?

Biology
1 answer:
Pepsi [2]3 years ago
7 0
Large floral are used in the reproduction in pteridophytes
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The answer is 51.0 ml but can someone explain why please
professor190 [17]

Answer:

\boxed{\sf A. \ 51 \ mL}

Explanation:

Amount of water displaced by the sphere will be equal to the volume of complete sphere.

As the sphere completely sinks to the bottom of the cup.

We have been given;

Diameter of sphere (d) = 4.6 cm

So,

\sf Radius \:  of \:  sphere  \: (r) =  \frac{Diameter \:  of \:  sphere \: (d)}{2}  \\  \sf =  \frac{4.6}{2}  \\ \sf  = 2.3 \: cm

Volume of sphere (V):

\boxed{ \bold{V =  \frac{4}{3} \pi {r}^{3} }}

By substituting value of r we get:

\sf \implies V =  \frac{4}{3}  \times \pi \times  {(2.3)}^{3}  \\  \\  \sf \implies V =  \frac{4}{3}  \times 3.14 \times 12.167 \\  \\ \sf \implies V =    \frac{152.81752}{3} \\  \\   \sf \implies V =  50.94 \:  {cm}^{3}  \\  \\   \sf \implies V  \approx 51 \:  {cm}^{ 3}

1 cm³ = 1 mL

\therefore

V = 51 mL

So,

Water displaced by the sphere = 51 mL

6 0
3 years ago
What is the difference between a wave and a particle
Inessa [10]

Answer:

The answer is A!

Explanation:

3 0
3 years ago
Which if the following cell parts is found inside the nucleus?
Nookie1986 [14]

Answer:

Chromosomes :)

6 0
2 years ago
What is the answer to number 2? Please help! :)
Kay [80]

For each of the examples, simple diffusion, carrier, and channel mediated, each type involves the flow down a concentration gradient. This means that the molecules flow from an area of high concentration to an area of low concentration. In turn, this allows for a passive process, meaning no ATP is needed! I hope this explains your question.

7 0
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Genetic material is being duplicated during which phase of the cell cycle? A. D phase B. M phase C. interphase D. G0 phase
Leno4ka [110]
Genetic material is being duplicated during C. Interphase of the cell cycle.
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3 years ago
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