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Savatey [412]
3 years ago
6

If nearly 79%of the atmosphere is made of nitrogen, how could there be a shortage of nitrogen in soil ?

Biology
2 answers:
Stolb23 [73]3 years ago
6 0

If nearly 79% of atmosphere is nitrogen, how could there be a shortage of nitrogen in some soils? Nitrogen must be converted into nitrates before organisms can use it. If soil lacks nitrogen fixing bacteria, then it has few nitrates for the plants to take in.

Shtirlitz [24]3 years ago
6 0

Answer:

There is a shortage of nitrogen in the soil because atmospheric nitrogen has limited use.

Explanation:

Atmospheric nitrogen is in the N2 form, this form is of limited use for biological processes and so there is an abundance of N2 in the atmosphere. However, the biological processes that occur in the soil need nitrogen in a form other than N2, that is, they need nitrogen converted to nitrite. These type molecules are not in abundance in the soil and for this reason, the soil has a shortage of this nutrient. Incorporating nitrogen into the soil requires chemical fertilization or biological nitrogen fixation.

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Plant hormones serve as chemixal mesenhers between cells and tissues. Auxins is a plant hormone that causes the cells on the sha
Nina [5.8K]

Answer:

This question is incomplete and lacks options, the whole question is:

Plant hormones serve as chemical messengers between cells and tissues. Auxin is a plant hormone that causes the cells on the shady side of a plant shoot to elongate. The response enabled by auxin is known as -

Options are:

A. geotropism

B. transpiration

C. phototropism

D. photosynthesis  

The correct answer is c.

Explanation:

Phototropism is known as a natural and organic movement of a plant towards the light. This is due to the natural ability of a plant to change direction based on changes in lighting in the environment. But external stimulus is not enough. It must generate some changes inside the plant that make it react in this way: hormones. A hormone is a chemical substance produced in one tissue and transported to another, in which it exerts one or more highly specific effects.Auxins are members of a group of plant hormones that are more beneficial to stimulate plant growth, it is the responsible mechanism of the response to phototropism in plants, which tends to be concentrated in the region of the stem and leaves, when a plant lacks this, it can be noted since the bending towards the light source is little or no, that is, auxins make the cells of the stem growth region (rhizomes and stems) lengthen.

4 0
3 years ago
The DNA of a eukaryotic chromosome is:
lisabon 2012 [21]

Answer:

1. one long double helix.

Explanation:

  • The Eukaryotic chromosome consists of the DNA protein structural complex that is formed by a manner and permits the large amounts of the DNA to be stored in the nucleus and structure to form a double standard helix made up of the double nucleic acid molecules and exists as a complementary pair.
3 0
4 years ago
What is the adaptive advantage of asexual reproduction?
Svetlanka [38]

Only one parent is needed for reproduction.

Hope I helped!

8 0
4 years ago
Were would the instructions in cell be found telling a flower to become a fruit
mrs_skeptik [129]
In the DNA in the nucleus
4 0
4 years ago
Why do earthquakes often happen near subduction zones?
son4ous [18]

Answer:

D.Subduction zones are near plate boundaries

Explanation:

Subduction zones are plate boundaries where two plates meet ,one plate is thrust beneath the other.Due to this earthquakes and Volcanic eruptions occurred. this geohazard affects millions of people around the globe, specifically at edge of the Pacific Ocean.This edges consists of many subduction zones. Megathrust is the largest earthquake occurred at the interface between the boundaries of the two plates.  

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5 0
3 years ago
Read 2 more answers
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