Question

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║ ＧＯＯＤ　ＭＯＲＮＩＮＧ !!!║

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ժҽբíղҽ Եհҽ բօllօաíղց :-



ᴄᵉˡˡ ʷᵃˡˡ 

ɴᵘᶜˡᵉᵘˢ 


ᶜʰʳᵒᵐᵒˢᵒᵐᵉˢ ​

Answer 1

cell wall: a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose.

nucleus:The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.

chromosome: a part of a cell in living things that decides the sex, character, shape, etc.

Answer 2

$\underline{\underline{\sf{Cell\:wall:-}}}$

Cell wall is the rigid outermost layer found in plant cells and in certain algae, bacteria, fungi. Cell wall is characteristically absent in animal cells.

${\implies{\sf{}}}$Cell walls give a shape to the cell and protect it from infection.

${\implies{\sf{}}}$In plants, the cell wall is made up mostly of cellulose, determines tissue texture, and often is crucial to cell function

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$\underline{\underline{\sf{Nucleus:-}}}$

Nucleus is a double membrane cell organelle found in eukaryotic cells.

${\implies{\sf{}}}$Nucleus contains DNA, chromosomes, protiens and dark stained region called nucleolus.

${\implies{\sf{}}}$Nucleus is the control centre of the cell which perform important functions such as DNA replication, protein synthesis etc.

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$\underline{\underline{\sf{Chromosomes:-}}}$

The thread like structures present in the nucleus of a cell are called chromosomes which contain strands of DNA packed together.

${\implies{\sf{}}}$Chromosomes carry genes in them which help in the transfer of characters from parents to the offspring.

${\implies{\sf{}}}$A chromosomes consists of two equal halves known as chromatids. These chromatids are joined with each other at a point known as centromere.

${\implies{\sf{}}}$The chromosomes bear the hereditary units known as genes. In humans there are 23 pairs of chromosomes.