Control and Coordination in Plants and Animals Test

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Control and Coordination in Plants and Animals Test - 3

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Question 1
1 / -0

The study of nervous system and its disorder is called

A
urology

B
haematology

C
neurology

D
herpentology

Solution

The study of nervous system and its disorders is called neurology. Neurology deals with the diagnosis and treatment of all categories of conditions and disease involving the central and peripheral nervous system (and its subdivisions, the autonomic nervous system and the somatic nervous system); including their coverings, blood vessels, and all effector tissue, such as muscle.
Question 2
1 / -0

Which of the following is one of the fundamental characters of chordates?

A
Presence of limbs

B
Presence of heart

C
Presence of nervous system

D
Presence of haemoglobin

Solution

Presence of nervous system in the form of dorsal nerve cord is one of the fundamental characters of chordates. The dorsal nerve cord is later modified in vertebrates into the central nervous system which is composed of the brain and the spinal cord. Dorsal nerve cord is mainly found in subphylum Vertebrata.
Question 3
1 / -0

Which is the longest cell of an animal's body?

A
Lymphocyte

B
Neuron

C
Osteocyte

D
Leucocyte

Solution

Neuron is the longest cell of an animal's body. A neuron is an electrically excitable cell that processes and transmits information through electrical and chemical signals.
Question 4
1 / -0

Which of the following options is not a part of neuron?

A
Neurilemma

B
Axon

C
Dendrites

D
Epididymis

Solution

Epididymis is a part of male reproductive system. It is not a part of the nervous system.
Question 5
1 / -0

Salivation centre is situated in

A
midbrain

B
pons

C
medulla

D
cerebellum

Solution

Many of the involuntary actions are controlled by the mid-brain and hind-brain. All these involuntary actions including blood pressure, salivation and vomiting are controlled by the medulla in the hind-brain.
Question 6
1 / -0

Brain stem contains

A
cerebellum and medulla oblongata

B
cerebellum, pons and medulla oblongata

C
cerebellum and pons

D
pons and medulla oblongata

Solution

Brain stem contains pons and medulla oblongata. The brain stem controls the flow of messages between the brain and the rest of the body, and it also controls basic body functions such as breathing, swallowing, heart rate, blood pressure and consciousness.
Question 7
1 / -0

Which part of the human brain regulates respiration?

A
Diencephalon

B
Pons

C
Cerebellum

D
Medulla

Solution

The medulla oblongata is the primary respiratory control center. Its main function is to send signals to the muscles that control respiration to cause breathing to occur. There are two regions in the medulla that control respiration: The ventral respiratory group stimulates expiratory movements.
Question 8
1 / -0

________ perceive the sensation of sight in human beings.

A
Optic lobes

B
Occipital lobes

C
Frontal lobes

D
Parietal lobes

Solution

Occipital lobes perceive the sensation of sight in human beings. The occipital lobe is one of the four major lobes of the cerebral cortex in the brain of mammals.
Question 9
1 / -0

Peripheral nervous system consists of:

A
cranial nerves only

B

both cranial and spinal nerves

C
spinal nerves only

D
None of these

Solution

The nervous system comprises the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, consisting of the cranial, spinal, and peripheral nerves, together with their motor and sensory endings.
Question 10
1 / -0

The largest cranial nerve in human beings is the

A
optic nerve

B
facial nerve

C
trigeminal nerve

D
mandibular nerve

Solution

The largest cranial nerve in human beings is the trigeminal nerve. It has three major branches: the ophthalmic nerve (V1), the maxillary nerve (V2) and the mandibular nerve (V3).
Question 11
1 / -0

Which of the following cranial nerves controls sound production?

A
Facial

B
Trochlear

C
Vagus

D
Hypoglossal

Solution

Vagus nerve controls sound production. It supplies the muscles of larynx.
Question 12
1 / -0

Which of the following options is not a reflex action?

A
Sneezing

B
Yawning

C
Chewing

D
Crying

Solution

Chewing is a voluntary action, not a reflex action. Through the process of mastication or chewing, teeth physically break down the tough tissues of meats and fibres of plants into smaller particles.
Question 13
1 / -0

During depolarisation, permeability of neuron increases towards

A
H⁺

B
Na⁺

C
Ag⁺

D
Mg⁺⁺

Solution

During depolarisation, permeability of neuron increases towards Na+, which changes the electrochemical gradient, which in turn produces a further rise in the membrane potential. This then causes more channels to open, producing a greater electric current across the cell membrane, and so on.
Question 14
1 / -0

The eye ball is moved by

A
4 muscles

B
6 muscles

C
8 muscles

D
10 muscles

Solution

The eye ball is moved by 6 muscles.
Four of the extraocular muscles control the movement of the eye in the four cardinal directions - up, down, left and right. The remaining two muscles control the adjustments involved in counteracting head movement. This can be observed by looking into one's own eyes in a mirror while moving one's head.
Question 15
1 / -0

Which of the following hormones promotes internodal elongation?

A
Auxin

B
Gibberellic acid

C
Cytokinin

D
Abscisic acid

Solution

Gibberellic acid is the hormone which promotes internodal elongation. It can stimulate rapid stem and root growth, induce mitotic division in the leaves of some plants and increase seed germination rate.
Question 16
1 / -0

Which of the following hormones causes delay in senescence?

A
Indole butyric acid

B
Gibberellic acid

C
Cytokinin

D
Abscisic acid

Solution

Cytokinins are known to delay senescence in leaf tissues and promote mitosis. Cytokinins act in concert with auxin, another plant growth hormone. The two are complementary, having generally opposite effects.
Question 17
1 / -0

Which of the following is a synthetic plant hormone?

A
IAA

B
2,4-D

C
Gibberellic acid

D
Zeatin

Solution

2,4-D is a synthetic plant hormone. It is a synthetic auxin (plant hormone) and one of the most widely used herbicides in the world.
Question 18
1 / -0

Endocrine glands are those glands which secrete their fluids

A
into blood through ECF

B
into definite ducts

C
into blood or ducts

D
only when they rupture

Solution

Endocrine glands are those glands which secrete their fluids into blood through ECF. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.
Question 19
1 / -0

Prohormones are

A
active form of hormones

B
inactive form of hormones

C
Both (1) and (2)

D
None of these

Solution

Prohormones are inactive form of hormones. Though not hormones themselves, prohormones amplify the effects of existing hormones.
Question 20
1 / -0

The largest endocrine gland is

A
adrenal gland

B
pituitary

C
thyroid

D
pineal

Solution

The largest endocrine gland is thyroid gland where as pancreas are largest heterocrine gland of the body.

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Control and Coordination in Plants and Animals Test - 3

Result

Control and Coordination in Plants and Animals Test - 3

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SHARING IS CARING

Question 1

urology

haematology

neurology

herpentology

Solution

Question 2

Presence of limbs

Presence of heart

Presence of nervous system

Presence of haemoglobin

Solution

Question 3

Lymphocyte

Neuron

Osteocyte

Leucocyte

Solution

Question 4

Neurilemma

Axon

Dendrites

Epididymis

Solution

Question 5

midbrain

pons

medulla

cerebellum

Solution

Question 6

cerebellum and medulla oblongata

cerebellum, pons and medulla oblongata

cerebellum and pons

pons and medulla oblongata

Solution

Question 7

Diencephalon

Pons

Cerebellum

Medulla

Solution

Question 8

Optic lobes

Occipital lobes

Frontal lobes

Parietal lobes

Solution

Question 9

cranial nerves only

both cranial and spinal nerves

spinal nerves only

None of these

Solution

Question 10

optic nerve

facial nerve

trigeminal nerve

mandibular nerve

Solution

Question 11

Facial

Trochlear

Vagus

Hypoglossal

Solution

Question 12

Sneezing

Yawning

Chewing

Crying

Solution

H⁺

Na⁺

Ag⁺

Mg⁺⁺