Tag: organisation of the organism

Questions Related to organisation of the organism

Which of the following life processes does not take place in animal cells?

biology cell structure and micro-organisms plant and animal cell cell structure organisation of the organism

  1. Movement

  2. Respiration

  3. Excretion

  4. Photosynthesis

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Correct Option: D
Explanation:

The animal cells lack the cellular organelle chloroplast. The chloroplast or the chlorophyll pigments are required for carrying out photosynthesis by capturing solar energy. The animal cells devoid of this organelle cannot perform photosynthesis.

Thus, the correct answer is option D. 

Cell wall is absent in which of the following?

biology cell structure and micro-organisms plant and animal cell cell structure organisation of the organism

  1. Plants

  2. Animals

  3. Mucor

  4. Bacteria

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Correct Option: B
Explanation:

Plants, algae, fungi, bacteria and some archaea have cell walls but animals and protozoa do not have cell walls. Animal cells have plasma membrane.

Which of the following organelles is found in plant cells but not in animal cells?

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Nucleus

  2. Mitochodrion

  3. Chloroplast

  4. Golgi apparatus.

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Correct Option: C

Interconvertible organelle in plant cell is 

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Plastids

  2. Vacuole

  3. Mitochondria

  4. Lysosome

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Correct Option: A
Explanation:
Chloroplasts (Green Plastids) are plant cell organelles which take part in photosynthesis and temporary or permanent storage of starch. In green alga, chloroplasts are of various shapes and sizes but chloroplasts of higher plants are disc-shaped with a diameter of 4 to 6 micrometer and thickness of 2 to 4 micrometer. In embryophytes, they are the second largest cell organelle, smaller only to the nucleus.
Chromosomes are not distinct cell organelles.
Both Golgi apparatus and mitochondria are much smaller than chloroplasts.
So, the correct answer is 'Plastids'

Select the wrong statement from the following.

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. The chloroplasts are generally much larger than mitochondria

  2. Both chloroplasts and mitochondria contain an inner and an outer membrane

  3. Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane

  4. Both chloroplasts and mitochondria contain DNA

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Correct Option: A

Conversion of $NO _3^-$ to $NO _2^-$ occurs in-

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Cytosol of plant cells

  2. Chloroplast

  3. Mithochondria

  4. Peroxisome

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Correct Option: A

A plant cell placed in $0.7\,M$ sugar solution was found with no change in cell volume. If the same plant cell is placed in $0.7\,M$ of $NaCl$ solution , then there will be

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. No change in cell volume

  2. Increase in cell volume

  3. Decrease in cell volume

  4. initial increase and eventually decrease in cell volume

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Correct Option: A

Planet cells that are photosynthetically  active are found in the ______ layer of leaf and are ____ cells.

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Epidermis ,Parenchymatous

  2. Mesophyll,Parenchymatous

  3. Mesophyll, Sclerenchymatous

  4. Aerenchyma,Collenchymatous

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Correct Option: A

Which is incorrect for chloroplast

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Presence in algae and plants

  2. Release $O _2$

  3. Occurs only in cells with aerobic respiration

  4. None

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Correct Option: C

In plant cell, the vacuole

biology cell structure plant and animal cell cell structure and micro-organisms organisation of the organism

  1. Contains air and lacks membrane

  2. Contains water and excretory substances but lacks membrane

  3. Contains storage protein and lipids and is membrane bound

  4. Is membrane bound, contains water and excretory substances.

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Correct Option: D