NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What structure is in plant cells but not animal cells?
A
Cell Membrane
B
Mitochondria
C
Cell Wall
D
Vacuole
Explanation: 

Detailed explanation-1: -The two structures found in plant cells that are absent in animal cells are cell wall and chloroplast.

Detailed explanation-2: -Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.

Detailed explanation-3: -Animal cells do not have cell wallsbecause they do not need them. Cell walls, which are found in plant cells, maintain cell shape, almost as if eachcell has its own exoskeleton. This rigidity allows plants to stand upright without the need for bones .

Detailed explanation-4: -Plant cell walls are usually divided in textbooks into two categories: primary walls that surround growing cells or cells capable of growth and secondary walls that are thickened structures containing lignin and surrounding specialized cells such as vessel elements or fiber cells.

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