Match the articles in columns I and II (single matching): Column A Column B (a) Cell growth (i) Abscisic acid (b) Wilting (ii) Nerve conduction (c) Emergency (iii) Adrenaline (d) Electrical impulses (iv) Auxin

(a)-(iv) Auxin is a plant hormone. Auxin helps in cell elongation in plants. It is found in the shoot tips and root tips of the plants and promotes cell division, stem growth and root growth. (b)-(i) Abscisic acid is a plant hormone. It inhibits seed germination and results in seed dormancy and bud dormancy. It mainly functions as a growth inhibitor in plants. It promotes closure of stomata, falling of leaves which results in wilting. (c)-(iii) Adrenaline, also known as epinephrine, is a hormone produced by adrenal glands. It increases heart rate, respiratory rate. It is also known as fight & flight hormone. (d)-(ii) Neurons carry the electrical impulses. A nerve impulse is an electrical signal that travels along an axon. Column A Column B (a) Cell growth (iv) Auxin (b) Wilting (i) Abscisic acid (c) Emergency (iii) Adrenaline (d) Electrical impulses (ii) Nerve conduction

Match the contents of columns I, II and III (double matching): Column I Column II Column III (a) Thyroid (i) Reflex arc p. Iodine (b) Shoot tip (ii) Neuromuscular junction q. Acetylcholine (c) Receptor (iii) Thyroxine r. Apical dominance (d) Motor end plate (iv) Auxin s. Effector

(a)-(iii)-p The thyroid is a small gland found at the base of the neck, just below Adam’s apple. This gland makes the thyroid hormone that controls body metabolism. Iodine is necessary for the functioning of the thyroid gland. (b)-(iv)-r Apical dominance is the condition when the shoot apex inhibits the growth of lateral buds. The end of the shoot contains an apical bud, where the shoot grows. The apical bud produces a hormone, Auxin, that inhibits the growth of shoot. (c)-(i)-s Reflex action happens through the reflex arc. It is a neural pathway that controls the response. The reflex arc acts on impulse before the impulse reaches the brain. (d)-(ii)-q A neuromuscular junction could be a chemical synapse shaped by the contact between a motor neuron and a muscle cell. Neuromuscular junction, also called myoneural junction, is the site of chemical communication between a nerve fibre and a muscle cell. Column I Column II Column III (a) Thyroid (iii) Thyroxine p. Iodine (b) Shoot tip (iv) Auxin r. Apical dominance (c) Receptor (i) Reflex arc s. Effector (d) Motor end plate (ii) Neuromuscular junction q. Acetylcholine

Name the control - voluntary (V), involuntary (I) and endocrine (E) in the following (Key or Checklist Items): Action Control (i) Peristalsis (ii) Lifting of arms (iii) Growth (iv) BMR

(i)—(I) Peristalsis is a series of wave muscular contraction which moves food through the alimentary canal for digestion. This muscular contraction is an involuntary response. It is not in your control. (ii)—(V) Lifting arms is a voluntary response. It is totally in your control. No hormone is secreted during this action. (iii)—(E) Growth is regulated by the growth hormone also known as somatotropin. This hormone is secreted by the anterior lobe of the pituitary gland. (iv)-(E) Basal Metabolic Rate is the measurement of energy expenditure of an organism at rest. Action Control (i) Peristalsis (I) (ii) Lifting of arms (V) (iii) Growth (E) (iv) BMR (E)

Match each stimulus with an appropriate response: Hormone Dwarfism (A) Cretinism (B) Pregnancy (C) Calcium level (D) Dilute urine (E) Mammary gland (F) (i) Thyroxine (ii) Growth hormone (iii) Parathormone (iv) Prolactin (v) Vasopressin (vi) Progesterone

(i)-B Cretinism occurs because of the insufficient production of thyroid hormone. It is a congenital disorder which arises due to under development of thyroid gland. (ii)-A Growth hormone is released by the anterior lobe of the pituitary gland. If this hormone is not released in an ample amount, it causes dwarfism. (iii)-D Parathormone is a hormone secreted by the parathyroid glands that regulate the level of calcium. (iv)-F Prolactin regulates formation of milk in mammary gland. (v)-E Vasopressin hormone helps in reabsorption of water from dilute urine and makes it concentrated. (vi)-C Progesterone is essential for maintaining pregnancy. This hormone helps in attachment of the embryo to uterine wall, formation and maintenance of placenta and growth of mammary glands. It also makes the wall of uterus thick and vascularised. Hormone Dwarfism (A) Cretinism (B) Pregnancy (C) Calcium level (D) Dilute urine (E) Mammary gland (F) (i) Thyroxine (B) (ii) Growth hormone (A) (iii) Parathormone (D) (iv) Prolactin (F) (v) Vasopressin (E) (vi) Progesterone (C)

K.N. Bhatia and C.S. Mishra Solutions for Chapter: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS

Author:K.N. Bhatia & C.S. Mishra

K.N. Bhatia Biology Solutions for Exercise - K.N. Bhatia and C.S. Mishra Solutions for Chapter: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS

Attempt the practice questions on Chapter 2: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS with hints and solutions to strengthen your understanding. DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY solutions are prepared by Experienced Embibe Experts.

Questions from K.N. Bhatia and C.S. Mishra Solutions for Chapter: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS with Hints & Solutions

MEDIUM

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 9

Match the articles in columns I and II (single matching):

Column A	Column B
(a) Cell growth	(i) Abscisic acid
(b) Wilting	(ii) Nerve conduction
(c) Emergency	(iii) Adrenaline
(d) Electrical impulses	(iv) Auxin

MEDIUM

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 10

Match the contents of columns I, II and III (double matching):

Column I	Column II	Column III
(a) Thyroid	(i) Reflex arc	p. Iodine
(b) Shoot tip	(ii) Neuromuscular junction	q. Acetylcholine
(c) Receptor	(iii) Thyroxine	r. Apical dominance
(d) Motor end plate	(iv) Auxin	s. Effector

MEDIUM

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 11

Name the control - voluntary (V), involuntary (I) and endocrine (E) in the following (Key or Checklist Items):

Action	Control
(i) Peristalsis
(ii) Lifting of arms
(iii) Growth
(iv) BMR

MEDIUM

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 12

Match each stimulus with an appropriate response:

Hormone	Dwarfism (A)	Cretinism (B)	Pregnancy (C)	Calcium level (D)	Dilute urine (E)	Mammary gland (F)
(i) Thyroxine
(ii) Growth hormone
(iii) Parathormone
(iv) Prolactin
(v) Vasopressin
(vi) Progesterone

EASY

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 13

A_____ mechanism regulates the action of hormones.

EASY

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 14

An axon terminal passes the electrical stimulus to a dendrite of next neuron through a _____ reaction. (physical/chemical)

EASY

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 15

Reflex arc formed in spinal cord also sends information input to _____.

EASY

10th CBSE

IMPORTANT

DINESH SUPER SIMPLIFIED SCIENCE BIOLOGY>Chapter 2 - Control and Coordination>SELECTION TYPE QUESTIONS>Q 16

_____ coordinates the activity of picking up pencil for writing.

K.N. Bhatia and C.S. Mishra Solutions for Chapter: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS

K.N. Bhatia Biology Solutions for Exercise - K.N. Bhatia and C.S. Mishra Solutions for Chapter: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS

Questions from K.N. Bhatia and C.S. Mishra Solutions for Chapter: Control and Coordination, Exercise 1: SELECTION TYPE QUESTIONS with Hints & Solutions

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