Match column A with column B. Column A Column B 1. Acromegaly a. Luteinising hormone 2. Vasopressin b. Diabetes mellitus 3. Ovulation c. Thyroxine 4. Spermatogenesis d. Prolactin 5. Insulin e. Oxytocin 6. Cretinism f. Growth hormone 7. Aldosterone g. ACTH 8. Childbirth hormone h. Follicle-stimulating 9. Glucocorticoids i. Adrenal gland 10. Milk secretion j. Sodium metabolism k. Diabetes insipidus

(1)-(f) Acromegaly is a hormonal disorder that results from excess secretion of growth hormone from the pituitary gland in an adult's body. The secretion of excess GH in children is called gigantism. (2)-(k) Lack of antidiuretic hormone or vasopressin causes diabetes insipidus. In this disease, retention of water can not occur by the kidney, so there will be a loss of water from the body due to frequent urination, which is called polyuria. (3)-(a) Luteinising hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, this hormone triggers ovulation and development of the corpus luteum after ovulation. (4)-(h) Sertoli cells have receptors for follicle stimulating hormone (FSH) and testosterone, which are the primary hormonal regulators of a process called spermatogenesis. (5)-(b) Deficiency of insulin causes diabetes mellitus. Insulin controls the blood sugar level. Hence, lack of this hormone increases the glucose level in the blood, leading to diabetes mellitus. (6)-(c) Cretinism is caused due to the lack of thyroid hormones in an individual's body. It is otherwise known as congenital hypothyroidism. The thyroid is an endocrine gland, located in the neck's anterior part, below the larynx. (7)-(j) Aldosterone causes water to be reabsorbed along with sodium. It also induces the potassium ion excretion through the nephron. This hormone increases blood volume and restores blood pressure. (8)-(e) Oxytocin is produced in the hypothalamus and released by the posterior pituitary. It plays roles in social bonding, sexual reproduction, childbirth, uterine muscle contraction, and milk release. (9)-(g) ACTH stimulates the adrenal cortex for the secretion of a glucocorticoid called cortisol. The cortisol mediates several functions such as response to stress, regulation of metabolism, inflammatory and immune response, etc. (10)-(d) Prolactin is the hormone that helps the body in making breast milk when a female is pregnant or breast-feeding. Column A Column B 1. Acromegaly f. Growth hormone 2. Vasopressin k. Diabetes insipidus 3. Ovulation a. Luteinising hormone 4. Spermatogenesis h. Follicle-stimulating 5. Insulin b. Diabetes mellitus 6. Cretinism c. Thyroxine 7. Aldosterone j. Sodium metabolism 8. Childbirth hormone e. Oxytocin 9. Glucocorticoids g. ACTH 10. Milk secretion d. Prolactin

E M B I B E

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 11

MEDIUM

10th Tamil Nadu Board

IMPORTANT

Earn 100

What will you do to prevent leaf fall and fruit drop in plants? Support your answer with reason.

Important Questions on Plant and Animal Hormones

HARD

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 12

Name the gaseous plant hormone. Describe its three different actions in plants.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 13

Which hormone is known as a stress hormone in plants? Why?

HARD

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 14

Describe an experiment which demonstrates that growth-stimulating hormone is produced at the tip of the coleoptile.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 15

Write the physiological effects of gibberellins.

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 16

What would be expected to happen if gibberellin is applied to rice seedlings?

EASY

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 17

What are endocrine glands?

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10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 16 - Plant and Animal Hormones>Exercise>Q 18

Match column A with column B.

Column A	Column B
1. Acromegaly	a. Luteinising hormone
2. Vasopressin	b. Diabetes mellitus
3. Ovulation	c. Thyroxine
4. Spermatogenesis	d. Prolactin
5. Insulin	e. Oxytocin
6. Cretinism	f. Growth hormone
7. Aldosterone	g. ACTH
8. Childbirth hormone	h. Follicle-stimulating
9. Glucocorticoids	i. Adrenal gland
10. Milk secretion	j. Sodium metabolism
	k. Diabetes insipidus