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Aleks [24]
3 years ago
8

What are the three groups of animals in Aristotle's classification system?

Biology
1 answer:
Sholpan [36]3 years ago
8 0

Land, Water and Air are the three sub-groups of animals in  Aristotle's classification system. He also classified on basis of red blood cells and without red blood cells.

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

Aristotle is very popular in ancient Greece and he is very popular in the field of biology and mathematics. He divided the living organisms into two classes called the Plants and the Animals. He divided the animals into two classes – one which contains red blood cells and the other which didn’t contain any red blood cells.

He also noticed that most of the organisms which contained red blood cells are vertebrates i.e they contained a body vertebral column in their back. So they were called as vertebrates and the others were called as invertebrates.

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A diploid cell has 28 chromosomes. When meiosis occurs, how many chromosomes are there during Prophase I?
murzikaleks [220]

Answer:

The correct answer will be option-B

Explanation:

Meiosis is a way of cell division used by the organism to produce a large number of cells from a few parent cells. This is used to make the gametes of the body.

Meiosis produces four daughter cells from a single parent cell in two stages that is meiosis I and II. Each stage proceeds in four phases- prophase, metaphase, anaphase and telophase.

The reduction division of the chromosomes or the ploidy number takes place during anaphase I of meiosis I and not prophase I which is the initial phase of the division. Therefore, during prophase I the chromosome number of the cell remains the same.

Thus, Option-B is the correct answer.

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3 years ago
a cell is placed in a solution of 3% starch and 3% glucose. After several hours, glucose is detected outside of the cell, but st
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Answer and Explanation:

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Movement of molecules is dependent on the concentation gradient. However, the size of molecules determine the diffusion rate. Small and light molecules diffuse faster than large and heavy molecules thus glucose diffused faster than starch.

The cell membrane being permeable suggested that it allows molecules of small sizes to pass but not large ones.

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ex. a rock.

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