Free Neural Control And Coordination (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Each semicircular canal lies in a different plane at _________ angle to each other.

(a) 60°

(b) 45°

(c) 90°

(d) 120°

Question-2

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system?

(a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.

(b) Hypothalamus activates the parasympathetic division of brain.

(c) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla.

(d) Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse.

Question-3

The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of

(a) Vitamin A

(b) Vitamin C

(c) Vitamin $B_1$

(d) Vitamin D

Question-4

Assertion:
Cerebrospinal fluid is present throughout the central nervous system.
Reason:
CSF has no function.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-5

Photopic vision is associated with

(a) Cones

(b) Rods

(c) Both (a) and (b)

(d) None of these

Question-6

Which of the following statements is/are functions of structure labelled as ‘X’ in the given diagram of eye?

1. It provides attachment points for muscles that move the eye.
2. It maintains the shape of the eye ball.
3. It helps during accomodation.
4. It is responsible for eye colour.

(a) I, II and IV

(b) I and II

(c) II, III and IV

(d) All of these

Question-7

"X" is spiral shaped structure consisting of hair cells that serve as receptors for auditory stimuli. Identify "X" and its label & location (marked as 1, 2, 3 and 4) from the given diagrammatic representation of the sectional view of cochlea.

(a) X- Eustachian tube, 1, 2.

(b) X- Organ of corti, 2, 3.

(c) X- Semicircular canal, 3, 4.

(d) X- Crista ampullaris, 1, 4.

Question-8

Anterior chamber of the eye is the space between

(a) Cornea and iris

(b) Cornea and lens

(c) Lens and retina

(d) Lens and iris

Question-9

Nissl's granules are present in the ...... and are made up of ......respectively

(a) Mast cells and RNA

(b) Muscle cells and deoxyribonucleic acid

(c) Osteocytes and DNA

(d) Neuron and RNA

Question-10

Which of the following statements are correct?

1. Somatic nervous system- Conducts impulses from CNS to skeletal muscles.
2. Autonomic nervous system- Conduct impulses from CNS to internal organ muscles.
3. Central nervous system- Consists of brain and spinal cord
4. Peripheral nervous system- Consists of nerves carrying impulses to brain and spinal cord only

(a) Only (iii) and (iv)

(b) Only (ii) and (iii)

(c) Only (i), (ii) and (iii)

(d) All of these