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kakasveta [241]
3 years ago
10

Which of the following is the best definition of chromosome?

Biology
2 answers:
natita [175]3 years ago
4 0
The answer is either a or c
Sloan [31]3 years ago
3 0

Answer:

The correct answer will be option C.

Explanation:

Chromosome is a packaged structure of DNA observed in the cell nucleus during metaphase stage of cell division when aligned in the equatorial plate of the cell.

Chromosomes number varies in different species which facilitates replication and distribution of the DNA to new daughter cells during cell division.

Chromosome is formed after coiling of DNA many times around proteins called histones which provides the structural support to DNA and form a special structure nucleosomes,  further coil up and create chromatin loops which further coil around each other and make a full chromosome.  

Thus, option C is the correct answer.

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Which of the following is a function of stomata?
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Stomata are special pores in plants  found typically on the outer leaf skin layer called the epidermis. They consist of two specialized cells called guard cells that surround a tiny pore called a stoma.

Their main function is to allow water vapor and gases such as carbon dioxide and oxygen to move rapidly in and out of the leaf.

The word stomata means mouth in Greek because they allow communication between the  internal and external environments of the plant.

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Answer:

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