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pychu [463]
3 years ago
11

Angiosperms do not need water for fertilization. Why? (3 points) Group of answer choices Flagellated sperm travel to the ovary i

nside the pistil Pollen stays inside the cone scales to fertilize eggs A pollen tube grows from the pollen grain into the ovary The sporophytes grow directly from the gametophytes
Biology
2 answers:
astraxan [27]3 years ago
5 0

Answer:

A pollen tube grows from the pollen grain into the ovary

Explanation:

Water is needed for fertilization in several plant groups because the sperm needs to swim to meet the non-motile eggs of the female organs.

<em>However in angiosperms, the pollen germinates and a structure known as pollen tube which contains the male gametophyte (sperm) grows into the ovary where the ovule is located and the male gametophyte is deposited in the ovule to initiate the fertilization process.</em>

<em>Hence, water is really not necessary for fertilization in the angiosperms.</em>

ladessa [460]3 years ago
5 0

Answer:

The answer is c) a pollen tube grows from the pollen grain into the ovary.

Explanation:

I took the quiz and got it correct.

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how do unicellular organisms and multicellular organisms compare in meeting their needs to stay alive
oksano4ka [1.4K]
<span>They utilize what they have but both are efficient its just that eukaryotic organisms have a better system for surivival and storage than prokaryotic which in contrast needs a lot of sustained energy.

There are differences between Eukaryotic and Prokaryotic cells. This difference is considered to be the most important distinction between groups of organisms. A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today. 
A Eukaryotic cell contains a nucleus; more than one chromosome and is typically a multi-celled organism.  <span>Both plant and animal cells are eukaryotic cells.</span></span>
6 0
3 years ago
The Milky Way galaxy looks like a band of light across the sky. Which observation would provide the best view of this band of li
notsponge [240]

Answer:

The correct answer is - observing on any dark, clear night.

Explanation:

We and many other plants and our sun present in a galaxy, called the Milky Way as it appears as a milky band of light in the sky when you see it in a really dark clear area night.

It can be observed easily without the help of a telescope all it requires a dark but clear night without clouds. It looks like a hazy band or cloudy white or milky color band in the sky.

6 0
2 years ago
All sources of pollution come from human activities. please select the best answer from the choices provided t f
padilas [110]

False.

All sources of pollution do not come from human activities.

<h3>What are the causes of pollution?</h3>

There are some natural causes of pollution. When dangerous pollutants enter the air as gases, liquids, or solids, air pollution is formed. Although there are some natural processes that can produce air pollution, such as sulfur and chlorine gases from volcanic activity, smoke and ash from wildfires, dust storms, and biological degradation, manmade sources account for the majority of pollution in the atmosphere.

Burning fossil fuels for transportation, energy, and industry produces the majority of air pollution that is caused by humans. Carbon dioxide, nitrogen oxides, sulfur dioxide, volatile organic compounds (VOCs), and particulates are typical pollutants released by fossil fuel-burning engines. In addition to particles, carbon monoxide and carbon dioxide are produced by stoves, incinerators, and open burning.

Learn more about causes of pollution here:

brainly.com/question/8141448

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4 0
1 year ago
Hormones are moved throughout the body by the ______________________system.
ch4aika [34]

Answer:

cardiovascular

Explanation:

Since there is no option of endocrine system, I would say cardiovascular because it involves the bloodstream

4 0
3 years ago
Mode of action of aldehydes and Quaternary ammonium compounds is
natulia [17]

Answer:

Aldehydes have antibacterial, antifungal, antiviral and sporicidal activity. These are helpful to destroy the spores of Bacillus subtilis and Clostridium sporogenes. Glutaraldehyde and formaldehyde are commonly used aldehydes in disinfectants.

Quaternary ammonium compounds work by denaturing the proteins of the bacterial or fungal cell, affecting the metabolic reactions of the cell and causing vital substances to leak out of the cell, causing death.

4 0
3 years ago
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