Tissues Test

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Tissues Test - 39

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following cells are not produced in the bone marrow of humans?

A
Neurons

B
Leucocytes

C
Erythrocytes

D
Monocytes

Solution

Neurons are the cells of the nervous system which are present in the brain and the spinal cord. Bone marrow is the site which is responsible for the production of many different types of cells. The blood cells like the erythrocytes, leucocytes and the monocytes are synthesized by the bone marrow.
Thus, the correct answer is option A.
Question 2
1 / -0

Identify the type of muscle given in the figure.

A
Skeletal muscle

B
Visceral muscle

C
Cardiac muscle

D
Smooth muscle
Solution
Visceral muscles are also called smooth muscles they are not striated, not branched, and singly nucleated.
Skeletal muscles are striated, not branched, and multinucleated.
Whereas, the figure shows uninucleated, striated and branched muscle. This type of muscle is found in the heart and is known as cardiac muscle.
Hence, the given image is of cardiac muscle.
Thus, the correct answer is option C.
Question 3
1 / -0

Why is epidermis important for the plants?

A
It gives protection

B
It helps in gaseous exchange

C
It checks water loss

D
All of the above
Solution
- Epidermis is the outermost layer of the plant body. It carries out the following functions:
1. It covers the body from outside and protects them from pathogen attack and atmospheric changes.
2. It bears stomata which are involved in gaseous exchange (oxygen, carbon dioxide) with the atmosphere. It also has lenticels on the woody stem for gaseous exchange.
3. The stomata present on leaves are also involved in transpiration (water evaporation from plant body). Stomata are guarded by guard cells, which close and open the stomata as per requirement. Therefore, epidermis bearing stomata also checks water loss from the plant body.
4. The epidermis is protected by cuticle at some parts of the tree and it helps to stop water loss by evaporation.
Hence the correct option is D.
Question 4
1 / -0

The role of the axon is to

A
Integrate signals from the dendrites

B
Release neurotransmitter

C
Conduct the impulse to the synaptic terminal

D
Synthesize cellular components

Solution

An axon also known as a nerve fibre, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles and glands. The space between two neuron is known as synapse. The nerve impulse is transmitted towards the synaptic terminal from the dendron.
Hence the correct option is C.
Question 5
1 / -0

The process of formation of blood corpuscles is called

A
Haemopoiesis

B
Hemolysis

C
Hemozoin

D
All of the above
Solution
- Haemolysis is the destruction of red blood cells.
- Hemozoin is a waste product formed by the digestion of blood by some blood-feeding organisms. Malaria parasites are one of the examples of such blood-feeding organisms.
- Haemopoiesis is the formation of blood cells in a living body. This process mainly takes place in the bone marrow.
Therefore, option A is correct.

Question 6

1 / -0

Statements (A, B, C, D) in List I have to be matched with statements (p, q, r, s) in List II.

	List I		List II
A	Cyton	p	The body of the nerve cell that contains the organelles.
B	Dendrite	q	Receives the stimuli sent from another nerve or the outside environment.
C	Axon	r	A fatty substance that covers the axon of the nerve cell and speeds.
D	Myelin sheath	s	The long, thin section of the nerve cell where the impulse is transmitted across.

A- p, B- q, C- s, D- r

A- r, B- q, C- s, D- p

A- r, B- s, C- q, D- p

A- r, B- s, C- p, D- q

Solution

Cyton is the cell body of the neuron. It contains the nucleus.

Dendrites are the cellular extension from the cyton. They receive stimulus, which may be physical, chemical, mechanical or electrical, and passes it on to the cyton.

Axons are also known as nerve fibres which are a projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.

Myelin sheath is also known as the medullary sheath. It is the envelope of myelin that surrounds the core of a nerve fiber or axon and that facilitates the transmission of nerve impulses, formed from the cell membrane of the Schwann cell in the peripheral nervous system and from oligodendroglia cells.

So, the correct answer is option C.

Question 7
1 / -0

The .................... of the neuron secretes the substance named neurotransmitter.

A
Axon

B
Dendron

C
Schwann cell

D
None of the above

Solution

The axon of the neuron secretes the substance named neurotransmitter to communicate with next dendrite. They are stored within synaptic vessicles. Neurotransmitters help in the chemical transmission of impulse and they may be excitatory or inhibitory.
Hence the correct option is A.
Question 8
1 / -0

Which of the following is an epidermal cell?

A
Guard cells

B
Root hairs

C
Trichome

D
All of the above
Solution
Epidermal cells form the outer covering or surface and are mainly involved in protection and secretion. Guard cells, root hairs, and trichome are all modification of the epidermal cells.
(i) Root hair
Structure:
Unicellular hairs are the extensions of an epidermal cell of roots in the root hair zone.
Function:
It increases the surface area for absorption of water and minerals.
(ii)Trichomes
Structure:
These are epidermal cell modifications. There may be unicellular or multicellular.
Functions:
Secretion and protection
(iii) Guard cell
Structure:
These are bean-shaped cells present on the epidermis of the leaf.
Functions:
These regulate the opening and closing of stomatal pore.
Hence the correct option is D.
Question 9
1 / -0

Erythropoiesis may be stimulated by the deficiency of

A
Iron

B
Oxygen

C
Protein

D
None of the above

Solution

The process of formation of red blood cells is known as erythropoiesis. RBC help in oxygen transport and therefore RBC production is stimulated by oxygen deficiency
So, the correct answer is 'Oxygen'
Question 10
1 / -0

In comparison with other cells, nerve cells show a higher degree of

A
Metabolism

B
Growth

C
Contractility

D
Irritability

Solution

Irritability or excitability is the ability of nerve cells to respond to environmental stimulus. Primary function of nerve cells is to generate sensory input in response to external and internal stimuli followed by integration of sensory information to generate motor output. Thus, nerve cells exhibit higher rate of irritability as compared to other cell types.
Therefore, the correct answer is option D.

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Tissues Test - 39

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Tissues Test - 39

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SHARING IS CARING

Question 1

Neurons

Leucocytes

Erythrocytes

Monocytes

Solution

Question 2

Skeletal muscle

Visceral muscle

Cardiac muscle

Smooth muscle

Solution

Question 3

It gives protection

It helps in gaseous exchange

It checks water loss

All of the above

Solution

Question 4

Integrate signals from the dendrites

Release neurotransmitter

Conduct the impulse to the synaptic terminal

Synthesize cellular components

Solution

Question 5

Haemopoiesis

Hemolysis

Hemozoin

All of the above

Solution

Question 6

A- p, B- q, C- s, D- r

A- r, B- q, C- s, D- p

A- r, B- s, C- q, D- p

A- r, B- s, C- p, D- q

Solution

Question 7

Axon

Dendron

Schwann cell

None of the above

Solution

Question 8

Guard cells

Root hairs

Trichome

All of the above

Solution

Question 9

Iron

Oxygen

Protein

None of the above

Solution

Question 10

Metabolism

Growth

Contractility

Irritability

Solution

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