Control and Coordination Test 33

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Control and Coordination Test 33

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Weekly Quiz Competition

Question 1
1 / -0

Read the following five statements (i) to (v) regarding left cerebral hemisphere and select the option that correctly states the true (T) and false (F) statements.
(i) It receives most modalities of sensory information from the right side of the body.
(ii) It is usually larger than the right cerebral hemisphere.
(iii) It is the dominant cerebral hemisphere in most individuals.
(iv) It is connected to the right cerebral hemisphere by the corpus callosum.
(v) It contains the main areas for the understanding and production of speech in most individuals.

A
(i) - T, (ii) - T, (iii) - F, (iv) - F, (v) - F

B
(i) - F, (ii) - T, (iii) - T, (iv) - F, (v) - T

C
(i) - T, (ii) - F, (iii) - T, (iv) - T, (v) - T

D
(i) - F, (ii) - F, (iii) - T, (iv) - T, (v) - T

Solution

Both cerebral hemispheres are of the same size. Both function equally but left hemisphere is considered dominant because in majority of people, Wernicke's and Broca's areas are located in the left hemisphere.Also majority of people are right-handed.
So, the correct option is C.
Question 2
1 / -0

Match the plant hormones listed in column I with their major role listed in column II and select the corret option from the codes given below.

Column I Column II
(A) Auxin (i) Fruit ripening
(B) Cytokinin (ii) Phototropism
(C) Abscisic acid (iii) Suppression of cell division
(D) Ethylene (iv) Stomatal opening and closing
(v) Growth of lateral buds

A
A - (v), B - (iii), C - (iv), D - (ii)

B
A - (iii), B - (ii), C - (iv), D - (i)

C
A - (ii), B - (v), C - (iv), D - (i)

D
A - (ii), B - (iv), C - (v), D - (iii)

Solution

(A) Auxin - (ii) Phototropism

(B) Cytokinin - (v) Growth of lateral buds

(C) Abscisic acid - (iv) Stomatal opening and closing

(D) Ethylene - (i) Fruit ripening

So, the correct answer is 'A - (ii), B - (v), C - (iv), D - (i)'.
Question 3
1 / -0

To speed up the malting process in brewing industry the growth hormone used is ____________.

A
auxin

B
gibberellin

C
kinetin

D
ethylene.

Solution

Gibberellins are used to speed up the malting process in brewing industry. They increase the yield of malt from barley grains.
Question 4
1 / -0

Which of the following is synthesized in a very small amount, sometimes it is strictly polarized or transported in a unidirectional manner from where they are synthesized to other parts?

A
Organic compound

B
Water & mineral ions

C
Plant growth regulators

D
All the above
Question 5
1 / -0

The discovery of auxin is traced back to the work of Charles and Francis Darwin on:

A
Photonastic movement

B
Photoperiodism

C
Phototropism

D
Geotropism

Solution

The work of Charles and Francis Darwin regarding phototropism led to trace back the discovery of Auxin. Plants show phototropism in response to light stimuli. Auxin plays a vital role in exhibiting phototropism in plants.
Thus, the correct answer is option C.
Question 6
1 / -0

After suffering a stroke, a patient can see objects anywhere in front of him but pays attention only to objects in his right field of vision. When asked to described these objects, he has diffuculty judging their size and distance. Which part of brain was likely damaged by the stroke?

A
The left frontal lobe

B
The right parietal lobe

C
The corpus callosum

D
The left parietal lobe

Solution

The right side of the brain is associated with functions of visual-spacial functions, these include distance, position, size, and speed of objects. When a person suffers from stroke to the right part of the brain, they can have trouble in perception and judging where they are in respect to their surroundings.
Therefore the right option is The right parietal lobe.
Question 7
1 / -0

Which of the following statements are correct?
I. Pars intermedia secretes MSH
II. Leydig's cell secretes progesterone
III. Melatonin is secreted by the pineal gland
IV. Myxoedema is a thyroid disorder
V. Neurohypophysis secretes ACTH

A
I, IV and V

B
II, IV and V

C
II, III and V

D
I, III and IV

Solution

1) Pars intermedia forms the boundary between the anterior and posterior lobes of the pituitary gland. It produces melanocyte-stimulating hormone or MSH which stimulates the release of melanin pigment in skin melanocytes.
2) Leydig cells are found in the testicle. They produce testosterone in the presence of the luteinizing hormone (LH).
3) Pineal gland is an endocrine gland found in the brain. It produces and secretes melatonin that helps to regulate biological rhythms.
4) Myxoedema is a term used for severe hypothyroidism. It is a condition that occurs when a very little amount of thyroxine is produced.
5) The posterior pituitary or neurohypophysis is the posterior lobe of the pituitary gland. It secretes two hormones: oxytocin and antidiuretic hormone or vasopressin. ACTH is secreted by the anterior pituitary glands.

The correct answer is 'I, III and IV'- i.e. option D
Question 8
1 / -0

If you see a tiger running towards you and you felt that your respiration and heartbeat has started increasing and then you also started running. Which hormone has been responsible for this?

A
Noradrenaline

B
Cortisol

C
Both A and B

D
Thyroxine
Solution
The adrenal medulla secretes adrenalin hormone and noradrenaline hormone in response to the stress of any emergency situations (for instance, observing a fear from a dog, tiger, bat, etc). These hormone increases sweating, heartbeat, piloerection, etc.
Cortisol is secreted by the adrenal cortex. It stimulates RBC production, maintains the cardiovascular system, kidney functions, and has the property of anti-insulin.
Thyroxine release from the thyroid gland. It regulates the metabolic rate of the body and BMR, body temperature, metamorphosis, mental development, etc.
Hence, the correct answer is option A.
Question 9
1 / -0

Aakash has a swollen neck. He is losing his weight from last few months drastically. When checked, the heart rate also seems to be increased. He claims that he is not able to sleep properly and he feels restless. What can be the probable diagnosis of this situation?

A
Hyperthyroidism

B
Hypothyroidism

C
Diabetes Mellitus

D
Insomnia

Solution

Hyperthyroidism (overactive thyroid) occurs when your thyroid gland produces too much of the hormone thyroxine. Hyperthyroidism can accelerate your body's metabolism, causing unintentional weight loss and a rapid or irregular heartbeat.
Question 10
1 / -0

Which of the following hormones is not a growth promoter ?

A
Cytokinin

B
Auxin

C
Gibberellin

D
Abscisic acid

Solution

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Column I	Column II
(A) Auxin	(i) Fruit ripening
(B) Cytokinin	(ii) Phototropism
(C) Abscisic acid	(iii) Suppression of cell division
(D) Ethylene	(iv) Stomatal opening and closing
	(v) Growth of lateral buds

Control and Coordination Test 33

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Control and Coordination Test 33

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Question 1

(i) - T, (ii) - T, (iii) - F, (iv) - F, (v) - F

(i) - F, (ii) - T, (iii) - T, (iv) - F, (v) - T

(i) - T, (ii) - F, (iii) - T, (iv) - T, (v) - T

(i) - F, (ii) - F, (iii) - T, (iv) - T, (v) - T

Solution

Question 2

A - (v), B - (iii), C - (iv), D - (ii)

A - (iii), B - (ii), C - (iv), D - (i)

A - (ii), B - (v), C - (iv), D - (i)

A - (ii), B - (iv), C - (v), D - (iii)

Solution

Question 3

auxin

gibberellin

kinetin

ethylene.

Solution

Question 4

Organic compound

Water & mineral ions

Plant growth regulators

All the above

Question 5

Photonastic movement

Photoperiodism

Phototropism

Geotropism

Solution

Question 6

The left frontal lobe

The right parietal lobe

The corpus callosum

The left parietal lobe

Solution

Question 7

I, IV and V

II, IV and V

II, III and V

I, III and IV

Solution

Question 8

Noradrenaline

Cortisol

Both A and B

Thyroxine

Solution

Question 9

Hyperthyroidism

Hypothyroidism

Diabetes Mellitus

Insomnia

Solution

Question 10

Cytokinin

Auxin

Gibberellin

Abscisic acid

Solution

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