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gogolik [260]
4 years ago
11

What does impermeable mean ?

Biology
1 answer:
soldi70 [24.7K]4 years ago
7 0

Answer:

it means that something does not allow fluids to pass through

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Why are so many starch grains found in the cortex?
rosijanka [135]

There are many grains of starch in the cortex because it represents the reserve food material of plants.

This source of food material is consumed during plant metabolism, as food when plants are under stress, or as an energy source in seed germination and early seedling stages.

The cortex, in plants, is a vascular tissue responsible for the transport of food (processed sap) from the leaves to the rest of the plant .

Starch grains are the most common solid particles that plant cells develop within plastids.

Assimilation starch is a temporary product of photosynthesis and is formed in chloroplasts, while reserve starch is formed in amyloplasts, which are contained in parenchymal cells of the cortex, in vascular tissues of stems and roots, in the pith of stems, in fruits, leaves, fleshy cotyledons and in modified stems, such as tubers and rhizomes.

Starch is the main energy and carbon reserve in plants, supplying the energy and carbon skeletons necessary for the plant's metabolism during periods of darkness, when photosynthesis is inactive.

Therefore, we can conclude that starch grains (ergasstic substances) are found in abundance in the cortex because it represents a reserve of essential molecules for the functioning and maintenance of the cellular structure.

Learn more here: brainly.com/question/18303563

4 0
3 years ago
How do clouds scatter light energy ?
DedPeter [7]

Answer:

Non-selective scatter is primarily caused by water droplets in the atmosphere. ... In the visible wavelengths light is scattered evenly, hence fog and clouds appear white. Since clouds scatter all wavelengths of light, this means that clouds block most energy from reaching the Earth's surface.

Explanation:

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Is pollen created in mitosis or meiosis?
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I believe that its meiosis but I could be wrong.

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Nuclear power has come under higher scrutiny in recent years. Which statement would make the strongest for the use of nuclear po
Tamiku [17]

The Answer is A) Nuclear power generates large amounts of power limited to projection of greenhouse gases.

I believe this is the answer. As per the reports in 1998, it has been calculated the emission of the greenhouse gas has reduced for nearly half due to the popularity in the use of nuclear power. Nuclear energy by far has the lowest impact on the environment since it does not releases any gases like carbon dioxide, methane which are largely responsible for greenhouse effect. There is no adverse effect on water, land or any habitats due to the use of it. Though some greenhouse gases are released while transporting fuel or extracting energy from uranium.

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A space probe returns with a culture of a microorganism found on a distant planet. analysis shows that it is a carbon-based life
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