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Serjik [45]
3 years ago
15

On a hike along the desert slope of the sierra nevada mountains in california, you notice that there is an abundance of pinyon p

ine and juniper trees. we would identify these two plants as: ecological dominants. mutualistic species. competitors. symbiotic species.
Biology
1 answer:
astra-53 [7]3 years ago
8 0

Answer:

ecological dominants

Explanation:

In an ecosystem, organisms of same and different species are usually found. However, some organisms appear too commonly than others in that particular ecosystem. These commonly observed organisms (plants and animals) due to their large numbers are called DOMINANT species. An ecological dominant species is that which numerically outshines its competitors in an ecosystem.

A species may be dominant because it is better adapted to certain processes than Its competitors e.g. getting resources, disease resistance etc. or even deters its competitors. Hence, they appear large in number. This is the case of the abundance of pinyon pine and juniper trees along the desert slope of the sierra nevada mountains in california. In that ecosystem, these two plants dominate, hence, will be referred to as ecological dominants.

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Both mitosis and meiosis are forms of cell division that produce daughter cells containing genetic information from the parent c
Sergeeva-Olga [200]

Answer:

(a)1. the replication of  genetic materials at S-phase of  interphase of both mitosis and meiosis prior to cell division.( This ensured required amount of genetic material are present in the daughter cells to produce, and enough food source as raw material fro the entire division process.

2.the manner in which the the chromosomes are aligned at the center of the cell before the chromosomes separates. (This ensured that required or exact copies of chromosomes are available in the new daughter cells as the chromosomes migrates to new daughter cells at Metaphase and Anaphase.

(b)Number of cell cycles or division and crossing over

This occurs because of the number of cell divisions that occurs, Mitosis occurs in one cycle of division which multiplied the number of cells formed, and therefore refereed to as multiplication  division.(2n)The new daughter cells have exact number  of chromosomes as the parent cells. While meiosis occurs in two cycles of Meiosis 1 and 11. This is a reduction division(n) in which the new daughter cells have haploid or  half of the parent chromosome numbers.

Crossing over is another feature which increases the chances of variation from the mixing up of genetic materials of both parents in the new daughter cells at a point called chiasmata. This makes the new haploid  daughter cells  having  new genetic composition slightly different from both parents.

7 0
2 years ago
How might it benefit an organism to have the nucleus near the center of the cell?
DochEvi [55]

I think it is because it's easier to "control". Like the books usually said that the nucleus is the control center of the nucleus, so if the nucleus located at the center or near center of the cell. So like easy contact, easy control, easy communication etc.

5 0
3 years ago
–/2 points my notes question part points submissions used a medical experiment is planned to compare the herb echinacea with a p
Alchen [17]

Answer:

The correct option is - D

The probability that the test rejects H₀ when m = 1 is true.

Explanation:

Given,

The significance level of a test

H₀ : m = 1 versus Hₐ : m > 1

Given options were

A) the probability that H₀ is true.

B) the probability that the test fails to reject H₀ when m = 3 is true.

C) the probability that the test rejects H₀ when m = 3 is true.

D) the probability that the test rejects H₀ when m = 1 is true.

Therefore, D means that The alternative hypothesis (Hₐ) will reject the Null hypothesis (H₀) when m = 1.  

5 0
3 years ago
The sum of ages of two brothers is 22 years six years ago the product of their ages was 21 years. find the age of the brother
Ksju [112]
I think the answer is 7
6 0
2 years ago
Suzie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best
iren2701 [21]

Answer:

This question is incomplete; the complete part is:

What is the independent variable in this experiment?

A) The plant species

B) The amount of water that each plant gets

C) The amount of time

D) The different types of light the plants were put under.

The answer is D. The different types of light the plants were put under.

Explanation:

In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter in order to bring about a measurable response.

In this experiment, Suzie Q wants to know the effect of different colors of light on the growth of plants. The different types of light used are; white light, blue light, green light, red light. Therefore, the independent variable is the DIFFERENT TYPES OF LIGHT THE PLANTS WERE PLACED UNDER.

6 0
2 years ago
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