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bekas [8.4K]
3 years ago
15

Which structure in the cheek cell did you observe that separates and protects the cell from the environment?

Biology
1 answer:
stellarik [79]3 years ago
5 0
The answer is epithelium. In particular, stratified squamous epithelium. Epithelium is protective tissue that is found on<span> the outer surfaces of </span>organs and  blood vessels<span> and </span><span>inner surfaces of </span>cavities<span> in many internal organs. Epithelium contains no blood vessels, and nutrients reach the epithelial cells through diffusion from the underlying tissue.</span>
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When is the best time to harvest crops?why?​
Nady [450]

\huge \bold \blue{★Question★}

When is the best time to harvest crops? why?

\huge \bold \blue{★Answer★}

Correct timing of harvest is crucial to crop loss prevention. Grain losses may occur caused by rats, birds, lodging, insects, and shattering. Timely harvesting ensures good grain quality and high market value.

Harvesting too early will result in a higher percentage of unfilled or immature grains, which will lower the yield and cause higher grain breakage during milling. Harvesting too late will lead to excessive losses and increased breakage in rice. Harvest time also affects the germination potential of rice seed.

\huge \mathsf \orange{MORE \: ABOUT :)}

There are different ways to determine the correct harvest time:

Moisture content

Grain moisture content ideally is between 20−25% (wet basis). Grains should be firm but not brittle when squeezed between the teeth.

Ripe grains per panicle

The crop should be cut when 80−85% of the grains are straw (i.e., yellow-colored).

Number of days after sowing

Generally, the ideal harvest time lies between 130 and 136 days after sowing for late, 113 and 125 for medium, and 110 days for early-maturing varieties.

Number of days after heading

For dry season harvesting, an optimum time is 28 to 35 days after heading. In wet season harvest, optimum time is 32 to 38 days after heading.

Other considerations

Harvesting also needs to be timed so that threshing can be done as soon as possible after cutting to avoid rewetting and to reduce grain breakage.

If the crop has a lot of surface moisture, (e.g. from previous rainfall or early in the morning), it is advisable to wait until the surface moisture dries off.

8 0
3 years ago
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masha68 [24]

Answer:A

Explanation:

6 0
3 years ago
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10. Which element in magma is most abundant?
san4es73 [151]

Answer:

A. oxygen

Explanation:

element in magma is most abundant is oxygen.

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7 0
3 years ago
Which is a requirement for natural selection to occur?
KIM [24]

Answer:

Fewer Offspring than the environment can support

Explanation:

It takes time for  a creature to adapt to its  Environment. So that puts off 2.

Your guaranteed to get traits from your parents so that rules out #1

There isn't really an equal probability of survival for an offspring, ruling out #3.

So that leaves us with 4. I'm not biology expert, I'm just letting you know how I did this problem.  Just in case i'm wrong, I would double check with other answers :)

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