Biology-Control and Coordination [NSTSE (National Science Talent Search Exam- Unified Council) Class 10]: Questions 1 - 4 of 44

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Question 1

Control and Coordination

Question

MCQ▾

Which of the following statements distinguishes a sensory neuron?

I. It carries information toward the central nervous system.

II. Part of the nerve cell that contains the nucleus.

III. It carries impulse along nerve cell.

Which statements is/are correct?

Choices

Choice (4)Response

a.

I only

b.

II and III only

c.

I and III only

d.

III only

Question 2

Control and Coordination

Question

MCQ▾

The medulla oblongata of the brain controls which of the following actions?

I. Blood pressure

II. Breathing

III. Vomiting

IV. Helps coordinate movement

Which action/ (s) is/are correct?

Choices

Choice (4)Response

a.

II, III and IV only

b.

I and II only

c.

I, II and III only

d.

I, II and IV only

Question 3

Control and Coordination

Question

MCQ▾

Which of the following is/are the characteristic features of reflex action?

I. Rapid removal of the hand from a hot or sharp object

II. Sweating

III. Coughing or sneezing in response to irritation of the nasal passages and trachea or bronchi

Which feature/ (s) is/are correct?

Choices

Choice (4)Response

a.

I only

b.

II and III only

c.

I, II and III only

d.

I and III only

Question 4

Control and Coordination

Question

MCQ▾

Which of the following sequences is correct in transfer of impulses in a reflex arc?

Choices

Choice (4)Response

a.

Effector Efferent neuron Control center Afferent neuron receptor

b.

Receptor Afferent neuron Control center Efferent neuron Effector

c.

Receptor Efferent neuron Control center Afferent neuron Effector

d.

Effector Afferent neuron Control center Efferent neuron Receptor

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