Which of the following statements is/are true about vacuoles?

They are more in number in animal cells.

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They can occupy 90% of the plant cell's volume.

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The membrane of the vacuole is called tonoplast.

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They help in synthesis of lipids.

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Solution

The correct options are
A They are more in number in animal cells.
B They can occupy 90% of the plant cell's volume.
C The membrane of the vacuole is called tonoplast.
Vacuoles are organelles which help in storage of salt, sugar, amino acids etc. Animal cells have more vacuoles than plant cells. Vacuoles in animal cells are smaller in size than the vacuoles in plant cells. Vacuoles in plant cells are very large and can occupy upto 90% of the volume of the cell. The vacuole is surrounded by a membrane called tonoplast.

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Similar questions

Q. Mark the following statements 'true' or false. Rewrite the wrong ones correctly.
(a) All cells have nuclei.
(b) Chloroplasts are present in all plant cells.
(c) Animal cells usually do not have vacuoles.
(d) Animal and plant cells have cell membranes.
(e) Ribosomes are called 'suicide bags'.
(f) The cell wall is made of cellulose which is a living substance.
(g) The cell membrane is freely permeable to all substances.
(h) All living organisms are made up of cells.
(i) Structures present in the cell are called organs.
(j) Cell respiration takes place in mitochondria.

Q. The membrane that surrounds vacuole is called __________.
(a) cell wall
(b) cell membrane
(c) tonoplast
(d) chloroplast

Q. State whether the following statements are true or false.

Statement 1: Vacuole stores waste materials in them.
Statement 2: Animal cells consist of larger vacuoles than plant cells.

Which of these statements about lipids, is incorrect?

I. Lipids are part of the cell membrane, cell organelles and other biological membranes.

II. Lipids also function as insulators, they add buoyancy to cells and as shock absorbers.

III. High Density Lipoproteins (HDL) are harmful lipids, as they are carried by blood easily and get deposited in high pressure vessels as a blocking layer .

IV. Low Density Lipoproteins (LDL) are useful lipids carried in the form of lipoproteins and help in clearing lipid depositions; they are also used in the formation of hormones.

Q. Correct the following statements
a)Mitochondria are the kitchen of the cells
b)Cell-wall is semi-permeable
c)Vacuoles help in protein synthesis
d)Chloroplasts are present in animal cells

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