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zepelin [54]
2 years ago
8

In the angiosperm life cycle, two sperm cells are discharged in each ovule. The reason that two sperm nuclei travel down the pol

len tube is that___.
Biology
1 answer:
blondinia [14]2 years ago
5 0

Answer:

One fertilizes the egg, and the other combines with the two polar nuclei.

Explanation:

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Enter the correct term in the blanks.
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a. veins and arteries

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e.4

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Explanation:

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3 years ago
Why did separate systemic and pulmonary circulations evolve in species that have the high-pressure circulatory system required f
Rina8888 [55]

Answer:

The separate systemic and the pulmonary conditions all evolve in the species that are having the high pressure circulatory system required for rapid movement of blood because if pulmonary was under pressure as high as that of the system circulation.

Explanation:

Here, it is given that the separate systemic and the pulmonary circulations evolve in the species.

And those species have the high pressure circulatory system for blood movement rapidly because if the pulmonary was under pressure as high as that of systemic circulation.

Also the fluid amount that will flow would be forced out of the cappilaries in the lungs.

Now, there is a conflict between the thin surface required for efficient exchange of gases.

Also, the thick blood vessels are required to withstand the high blood pressures.

6 0
3 years ago
Sydney wants to explain the concept of the axial and appendicular skeleton.if she uses an analogy of a coat rack,what would the
stealth61 [152]

The area residing in the center explains the bilatial tibulti, which precedents the bratuluti tubilitu. As for the rack itself, it has a half-moon (in laymens terms) axial, which appendages smoothly in all transition. The answer would certainty relate less to moving and a part itself, and more towards coordination or other terms (for which there are many), as this question is quite subjective.

In short, it has nearly free half-moon movement, though blocked in transition by its own quartsor axial.

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3 years ago
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