Tag: plant and animal cell

Questions Related to plant and animal cell

Which of the following statements is true about the plant cell?

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. The cytoplasm is filled up with nucleus.

  2. The cytoplasm is a jelly-like mixture of cellulose.

  3. Plant cells contain a rigid cell wall made up of cellulose.

  4. There are plenty of chloroplast granules in plant root cells.

Show answer
Correct Option: C
Explanation:

Cellulose forms an integral part of the cell wall which provides strength and rigidity to the cell. It helps to maintain the structural integrity of a particular cell. Cellulose is a complex polysaccharide which is made up of β(1→4) linked D-glucose units.

Thus, the correct answer is option C. 

Which of the following is correct in plant cell?

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Bigger vacuole with rigid cell wall.

  2. Centriole takes part in cell division.

  3. Centrosome are inactive in non-dividing cell.

  4. Absence of cell membrane.

Show answer
Correct Option: A
Explanation:

Vacuoles are found in almost all the cells. A plant cell usually has a large central sap vacuole. Most mature plant cells have one large vacuole that typically occupies more than 30% of the cell's volume, and that can occupy as much as 80% of the volume for certain cell types and conditions. Another important characteristic of a plant cell is the presence of a cellulosic cell wall. The plant cell wall is dead at maturity and is rigid. Hence, cell wall provides support and maintains the shape of a plant cell.

A plant cell placed in pure water will

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Swell up and become turgid

  2. Swell up and burst

  3. Lose water and become flaccid

  4. Shrink and die

Show answer
Correct Option: A
Explanation:

Plant cells have a strong cell wall surrounding them. When they take up water by osmosis they start to swell, but the cell wall prevents them from bursting. As a result, the plant cells become “turgid” when they swell up and become turgid.

Thus, the correct answer is option (A). 

Plant cells store fat in

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Peroxisome

  2. Lysosome

  3. Sphaerosome

  4. Microsome

  5. Microphage

Show answer
Correct Option: C
Explanation:
  • Plant cells store fat in sphaerosome.
  • Spherosomes or oleosomes can be defined as small cellular organelles found in plant cells that are enclosed by a single membrane. 
  • It is mainly responsible for the storage and synthesis of lipid. 
  • They are obtained from the endoplasmic reticulum and are surrounded by a phospholipid monolayer.
  • So, the correct answer is 'Sphaerosome'.

A plant (cell) having more than two nuclei is known as

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Syncytial

  2. Coenocyte

  3. Polynucleate

  4. Plasmodium

Show answer
Correct Option: B
Explanation:
  • A plant cell having more than two nuclei is known as coenocyte.
  • Coenocyte refers to a multinucleate condition of the cell (algae, fungi or plant) which occurs due to the multiple nuclear divisions which are not followed by cytokinesis.
  • So, the correct answer is 'Coenocyte'.

Centrosome is absent in

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Cells of higher plants

  2. Cells of lower plants

  3. Cells of higher animals

  4. Cells of lower animals.

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Correct Option: A

Match the following and find the correct combination.

(a) Cellulose (i) Cell wall of bacteria
(b) Chitinase (ii) Cell wall of plant cells
(c) Lysozyme (iii) Proteins
(d) Protease (iv) Cell wall of fungal wall
(v) RNA
biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. a-ii, b-iv, c-i, d-iii

  2. a-ii, b-i, c-iv, d-iii

  3. a-v, b-i, c-iii, d-ii

  4. a-v, b-iv, c-i, d-ii

Show answer
Correct Option: A

Consider the following statements.
a. In plant cells, cytokines is starts with the formation of the phragmoplast.
b. Phragmoplast comprises interozonal microtubules and Golgi vesicles.
c. Primary cell wall is produced by microtubules.
Which of the statements are correct?

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. $1$ and $3$

  2. $1$ and $2$

  3. $2$ and $3$

  4. $1, 2$ and $3$

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Correct Option: A

In a plant cell, DNA is present _______________.

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Only in chromosomes

  2. In chromosomes and chloroplasts

  3. In chromosomes, chloroplasts and mitochondria

  4. In chromosomes, chloroplasts mitochondria and ribosome's

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Correct Option: C

The plant cells wall in a cross-section appears to be made up of many layers due to the.

biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

  1. Presence of large amount of cellulose in the wall

  2. Presence of lignin which prevents the folding cellulose micro fibrils

  3. Presence of different composition and structure of the lamellae which are added continuously as the wall grows

  4. Orientation of micro fibrils in the different lamellose of the wall that result in differences in the refraction of light so that layers of the wall are emphasized

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Correct Option: A