M.C.Q. [I MARKS]

MCQ 11 Mark

The organelles which provide energy for all activities of a cell are:

A
Chloroplasts.
✓
Mitrochondria.
C
Golgi bodies.
D
Ribosomes.

Answer

Correct option: B.

Mitrochondria.

Explanation:
Mitochondria is the site of cellular respiration or oxidation of food in a cell. It uses glucose and oxygen to produce energy. Hence, it is knowns as “Powerhouse of the cell”.

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MCQ 21 Mark

Which of the following are prokaryotes?

A
Protozoa.
B
Blue – green algae.
C
Fungi.
✓
Bacteria.

Answer

Correct option: D.

Bacteria.

Explanation:
Organisms which do not have true nucleus are called prokaryotes. Bacteria and blue green algae are examples of prokaryotes.

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MCQ 31 Mark

In a living cell, chromatin is present in:

✓
Cytoplasm.
B
Chloroplasts.
C
Nucleus.
D
Vacuole.

Answer

Correct option: A.

Cytoplasm.

Explanation:
Chromatin material is a tangled fibrous mass. The chromatin material condenses to form chromosomes during cell division.

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MCQ 41 Mark

The structural and functional unit of life called cell was discovered by:

A
Robert Boyle.
B
Charles Darwin.
C
Robert Koch.
✓
Robert Hooke.

Answer

Correct option: D.

Robert Hooke.

Explanation:
The structural and functional unit of life called cell was discovered by Robert Hooke.

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MCQ 51 Mark

All the living matter in a cell is called:

A
Endoplasm.
✓
Protoplasm.
C
Cytoplasm.
D
Cell sap.

Answer

Correct option: B.

Protoplasm.

Explanation:
The entire content of a living cell is known as protoplasm. It includes the cytoplasm and the nucleus. Protoplasm is called the living substance of the cell.

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MCQ 61 Mark

The basic similarity among all the living organisms is that they are made up of:

A
Tissue.
B
Organs.
✓
Cells.
D
Organ systems.

Answer

Correct option: C.

Cells.

Explanation:
The basic similarity among all the living organisms is that they are made up of cells. Cell is the structural and functional unit of life.

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MCQ 71 Mark

The parts which are not present in an animal cell are:
$A.$ Cell membrane.
$B.$ Chloroplast.
$C.$ Cell wall.
$D.$ Mitochondria.

A
$A$ and $B$
✓
$B$ and $C$
C
$A$ and $D$
D
$B$ and $D$

Answer

Correct option: B.

$B$ and $C$

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MCQ 81 Mark

Which of the following human system includes oesophagus?

A
Respiratory system.
B
Circulatory system.
✓
Digestive system.
D
Reproductive system.

Answer

Correct option: C.

Digestive system.

Explanation:
Oesophagus is a part of human digestive system. It is a muscular tube which connects the pharynx to the stomach. It is also known as food pipe.

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MCQ 91 Mark

Which of the following is a plant cell?

A
Cartilage cell.
B
Neuron.
✓
Epidermal cell.
D
Epithelial cell.

Answer

Correct option: C.

Epidermal cell.

Explanation:
Epidermal cell is a plant cell while cartilage cell, neuron and epithelial cell are animal cells.

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MCQ 101 Mark

The cell wall in onion peel cell is made of:

A
Starch.
B
Gelatin.
✓
Cellulose.
D
Cell sap.

Answer

Correct option: C.

Cellulose.

Explanation:
The cell wall in onion peel cell is made of cellulose.

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MCQ 111 Mark

Which of the following is not a unicellular organism?

✓
Amoeba.
B
Yak.
C
Yeast.
D
Rhizobium.

Answer

Correct option: A.

Amoeba.

Explanation:
Amoeba, yeast and rhizobium are examples of unicellular organisms while Yak is an example of multicellular organisms.

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MCQ 121 Mark

The part of a cell which plays a role in inheritance is:

✓
Nucleus.
B
Cytoplasm.
C
Plasma membrane.
D
Mitochondria.

Answer

Correct option: A.

Nucleus.

Explanation:
Nucleus contains thread-like structures called chromosomes. These carry genes and help in inheritance or transfer of characters from the parents to the offspring.

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MCQ 131 Mark

The group of similar cell which work together to perform a particular functions is called:

A
Organ.
B
Organelle.
C
Organisms.
✓
Tissue.

Answer

Correct option: D.

Tissue.

Explanation:
The group of similar cells which work together to perform a particular function is called tissue.

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MCQ 141 Mark

Which of the following organelle is not found in the root cells of a plant?

A
Nucleus.
B
Vacuole.
C
Mitochondria.
✓
Chloroplasts.

Answer

Correct option: D.

Chloroplasts.

Explanation:
Chloroplasts are found only in those plant cells which carry out photosynthesis like the cells in green leaves. So, chloroplasts are not found in the root cells of a plant.

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MCQ 151 Mark

A long and branched animal cell is:

A
Muscle cell.
B
Epithelial cell.
✓
Nerve cell.
D
Cartilage cell.

Answer

Correct option: C.

Nerve cell.

Explanation:
Nerve cells (neurons) are long, branched and have thread-like projections so that they can connect other nerves cells and transmit messages over long distance.

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MCQ 161 Mark

Which of the following cells can change their shape?
$A.$ White blood cell.
$B.$ Amoeba cell.
$C.$ Red blood cell.
$D.$ Euglena cell.

✓
$A$ and $B$
B
$B$ and $C$
C
$A$ and $D$
D
$B$ and $D$

Answer

Correct option: A.

$A$ and $B$

An amoeba cell and white blood cell present in human blood can change their shape.

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MCQ 171 Mark

Which of the following cell does not have a nucleus?

A
White blood cell.
✓
Red blood cell.
C
Nerve cell.
D
Muscle cell.

Answer

Correct option: B.

Red blood cell.

Explanation:
Red blood cell does not have a nucleus.

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MCQ 181 Mark

The egg cell measuring about $17\ cm \times 13\ cm$ is most likely that of:

A
Hummingbird.
B
Hen.
C
Elephant.
✓
Ostrich.

Answer

Correct option: D.

Ostrich.

The largest cell measuring $170\ mm \times 130\ mm$, is the egg of an ostrich.

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