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kobusy [5.1K]
3 years ago
11

Lichen growing on newly formed lava beds is an example of _____.

Biology
1 answer:
USPshnik [31]3 years ago
8 0

Answer:

answer, I guess, is C.primary succession

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Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma
Mama L [17]
<h2>The correct answer is : C.</h2>

Explanation:

  • According to the question, mating between two populations of Rhagoletis produce hybrid flies.
  • This means that the two population is present in the same habitat or locality, hence they are capable of coming in contact with each other and mate. Hence, the answer cannot be Habitat Isolation.
  • Mating produces hybrid flies. This is possible when the gametes (egg and sperm) of the two different populations are capable of capable of coming close to each other and undergoing fusion (fertilization). Hence, there is no Mechanical Isolation.
  • The zygote formed by the above fertilization is capable of developing into healthy hybrid flies with normal life span. Hence, Pre-zygotic Isolation is absent.
  • But the hybrid flies formed are sterile and not fertile, that is, they are incapable of producing viable gametes which can undergo fertilization and produce a new offspring.Therefore, the eggs laid by the hybrid flies hatch less often. Hence, there is existence of Reduced hybrid fertility.
8 0
3 years ago
For each of the following statements, indicate
stepan [7]

The plants that were allowed to self pollinate were the F1 plants.

The plants that are true breeding are P generation plants.

The plants where there were 3times as many tall plants as short plants are in F2 generation.

<h3><u>Explanation:</u></h3>

This question is based on the Mendel’s Experiment. Sir Gregor Johann Mendel was the father of genetics who experimented on garden pea plants <em>Pisum</em> <em>sativum</em> to see whether the characters got mixed or not and to know the real cause behind different traits of same character in plants.

He took the pure homozygous tall and short plants separately which he called as parental generation or P generation. These plants were homozygous, hence pure breeding.

As these plants were crossed between themselves, then the F1 generation showed all tall plants. This is because of the heterozygous plants which showed character of dominant trait. These plants were allowed to self pollinate.

As a result of self pollination of the F1 plants, the F2 plants were 75% tall in number whereas the other 25% short, which gave the phenotypic ratio of 3:1.

4 0
3 years ago
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Which of the following is NOT associated with mass production?
liubo4ka [24]
Craftsmanship is not part of mass production.
5 0
3 years ago
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Cells that support neurons structurally and functionally are called B NEUROGLIA
Alex787 [66]

Answer:

B. neuroglia.

Explanation:

Neuroglia, also called glial cells are cells that support neurons structurally and functionally.

There exists two broad classes of cells in the nervous system which are:

  1. Neurons
  2. Glia

The neurons process information while the glia support the neuron mechanically and metabolically.

In general, there are three main types of cells that make up the nervous system including the above two.

3 0
3 years ago
Which of the following is likely to be researched by a toxicologist?
Likurg_2 [28]
Most likely D, because pesticides are poisonous to surrounding life.
5 0
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