Biology : Cell Structure And Function

Q 1 / 4

UPSC CSE Prelims 2020

Which of the following statements are correct regarding the general difference between plant and animal cells?

  1. Plant cells have cellulose cell walls whilst animal cells do not.
  2. Plant cells do not have plasma membrane unlike animal cells which do.
  3. Mature plant cell has One large vacuole whilst an animal cell has many small vacuoles.

Select the correct answer using the code given below

EXPLANATION

Correct Option

Statement 1 is correct. Plant cells are characterized by the presence of a rigid cell wall, primarily composed of cellulose, which provides structural support, protection, and maintains cell shape. Animal cells do not possess a cell wall.

Statement 3 is correct. Mature plant cells typically contain a single, large central vacuole. This vacuole plays a crucial role in maintaining turgor pressure, storing water, nutrients, and waste products. In contrast, animal cells generally possess several smaller, temporary vacuoles.

Incorrect Options

Statement 2 is incorrect. Both plant and animal cells possess a plasma membrane (also known as the cell membrane). The plasma membrane is a selectively permeable barrier that regulates the movement of substances into and out of the cell. In plant cells, it is located immediately beneath the cell wall.

Options (a), (b), and (d) are incorrect because they include statement 2, which inaccurately claims that plant cells do not have a plasma membrane.

SOURCENCERT Class 9 Science Chapter 5: The Fundamental Unit of Life