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kipiarov [429]
2 years ago
9

What is the approximate size of a nucleus in a elodea cell?

Biology
1 answer:
RideAnS [48]2 years ago
5 0
0.05 ml long that alli know of
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Which eye structure is primarily responsible for making the adjustments required to focus on objects both near and far?.
lbvjy [14]

Answer:

The lens

It helps to focus on objects and light

5 0
2 years ago
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.

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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
Read 2 more answers
(1) Identify the two vocabulary words that belong and fully explain why.
Bumek [7]

Answer:

solar system belongs to universe

Explanation:

solar system is part of the universe

4 0
3 years ago
The trp operon in E. coli is regulated in such a manner as to allow expression of the genes only when cellular levels of tryptop
vazorg [7]

Answer:

attenuation

Explanation:

Based on the scenario being described within the question it can be said that the form of regulation that is being described is known as attenuation. In the context of genetics, this is a specific mechanism that provides control in various bacterial operons that result in term results in premature termination of the transcription.

6 0
3 years ago
Which of the following is an example of a population? View Available Hint(s) Which of the following is an example of a populatio
Kryger [21]

Answer:

The correct option is ALL THE REDWOOD TREES THAT LIVES IN A FOREST.

Explanation:

In the study of the ecosystem, population refers to a group of living organisms that belong to the same species and which live in the same area and interact with one another. In the options given, option A is wrong because a spider and a fly are not the same specie. Option C is wrong because all the plants that live near each other in a forest can not be the same species. Option D is wrong because all the coyotes on earth are not living in the same environment, where they can interact with one another.  Option E is wrong because the earthworm that live in a grassland and the one that live in the forest are not living in the same environment and therefore can not interact.

6 0
3 years ago
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