Selina Textbook Solutions: Endocrine Glands - The Producers of Chemical Messengers | Biology Class 10 ICSE PDF Download

 Page 1


 
A. MULTIPLE CHOICE TYPE: 
 
Question 1:  
A gland having endocrine as well as exocrine function is  
(a) pituitary         (b) thyroid        (c) pancreas       (d) adrenal 
Solution 1: 
(c) pancreas 
 
 
Question 2: 
Exophthalmic goitre is caused due to the over activity of  
(a) thymus    (b) thyroid    (c) parathyroid      (d) adrenal cortex. 
Solution 2: 
(b) thyroid 
 
 
Question 3: 
The secretion of ADH (anti-diuretic hormone) is inhibited by 
(a) emotion and stress     (b) nicotine    (c) alcohol   (d) morphine 
Solution 3: 
(c) alcohol 
 m 
 
B. VERY SHORT ANSWER TYPE: 
 
Question 1: 
Name the following: 
(a) The three hormones produced by pancreas 
(b) The hormone produced by adrenal medulla 
(c) The condition caused by the over secretion of insulin 
(d) The hormone secreted by ß (beta) cells of the islets of Langerhans 
(e) The hormone which increases blood pressure 
(f) The hormone causing more urine formation 
(g) The hormone which stimulates the entire sympathetic nervous system. 
Solution 1: 
(a) Insulin, glucagon, somatostatin 
(b) Adrenaline 
(c) Hypoglycemia 
 
Class X Chapter 9 – Endocrine Glands Biology 
______________________________________________________________________________ 
Page 2


 
A. MULTIPLE CHOICE TYPE: 
 
Question 1:  
A gland having endocrine as well as exocrine function is  
(a) pituitary         (b) thyroid        (c) pancreas       (d) adrenal 
Solution 1: 
(c) pancreas 
 
 
Question 2: 
Exophthalmic goitre is caused due to the over activity of  
(a) thymus    (b) thyroid    (c) parathyroid      (d) adrenal cortex. 
Solution 2: 
(b) thyroid 
 
 
Question 3: 
The secretion of ADH (anti-diuretic hormone) is inhibited by 
(a) emotion and stress     (b) nicotine    (c) alcohol   (d) morphine 
Solution 3: 
(c) alcohol 
 m 
 
B. VERY SHORT ANSWER TYPE: 
 
Question 1: 
Name the following: 
(a) The three hormones produced by pancreas 
(b) The hormone produced by adrenal medulla 
(c) The condition caused by the over secretion of insulin 
(d) The hormone secreted by ß (beta) cells of the islets of Langerhans 
(e) The hormone which increases blood pressure 
(f) The hormone causing more urine formation 
(g) The hormone which stimulates the entire sympathetic nervous system. 
Solution 1: 
(a) Insulin, glucagon, somatostatin 
(b) Adrenaline 
(c) Hypoglycemia 
 
Class X Chapter 9 – Endocrine Glands Biology 
______________________________________________________________________________ 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(d) Insulin 
(e) Adrenaline 
(f) Anti-diuretic hormone (Vasopressin) 
(g) Adrenaline 
 
 
Question 2: 
What would a child suffer from, if there was hyposecretion from his thyroid? 
Solution 2: 
If there was hyposecretion of the thyroid gland in a child; the child will suffer from cretinism. 
The symptoms of cretinism are dwarfism, mental retardation, etc. 
 
 
Question 3: 
Choose the odd one out from each series  
(a) The glands – thyroid, adrenal, pituitary, prostate 
………………………………………… 
(b) The conditions – cretinism, myxoedema, goiter, scurvy 
………………………………………….  
(c) The hormones – insulin, glucagon, cretinism, thyroxine 
…………………………………………. 
(d) The hormonal sources – adrenal cortex, adrenal medualla, cortisone, pituitary. 
…………………………………………….. 
Solution 3: 
(a) Prostate 
(b) Scurvy 
(c) Cretinism 
(d) Cortisone 
 
 
Question 4: 
Identify the odd one in each of the following and mention what the rest are: 
(a) Larynx; glucagon; testosterone; prolactin…………………………………….. 
(b) Adrenaline; penicillin; insulin; thyroxin………………………………… 
(c) Stomach ; ileum; liver; adrenaline………………………………….. 
(d) TSH; GH; ADH; Insulin……………………………………. 
(e) Iodine, cretinism, goiter, myxedema…………………………………. 
Solution 4: 
(a) Larynx 
Reason- Larynx is the sound box while the rest three i.e. glucagon; testosterone and prolactin 
are hormones. 
Page 3


 
A. MULTIPLE CHOICE TYPE: 
 
Question 1:  
A gland having endocrine as well as exocrine function is  
(a) pituitary         (b) thyroid        (c) pancreas       (d) adrenal 
Solution 1: 
(c) pancreas 
 
 
Question 2: 
Exophthalmic goitre is caused due to the over activity of  
(a) thymus    (b) thyroid    (c) parathyroid      (d) adrenal cortex. 
Solution 2: 
(b) thyroid 
 
 
Question 3: 
The secretion of ADH (anti-diuretic hormone) is inhibited by 
(a) emotion and stress     (b) nicotine    (c) alcohol   (d) morphine 
Solution 3: 
(c) alcohol 
 m 
 
B. VERY SHORT ANSWER TYPE: 
 
Question 1: 
Name the following: 
(a) The three hormones produced by pancreas 
(b) The hormone produced by adrenal medulla 
(c) The condition caused by the over secretion of insulin 
(d) The hormone secreted by ß (beta) cells of the islets of Langerhans 
(e) The hormone which increases blood pressure 
(f) The hormone causing more urine formation 
(g) The hormone which stimulates the entire sympathetic nervous system. 
Solution 1: 
(a) Insulin, glucagon, somatostatin 
(b) Adrenaline 
(c) Hypoglycemia 
 
Class X Chapter 9 – Endocrine Glands Biology 
______________________________________________________________________________ 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(d) Insulin 
(e) Adrenaline 
(f) Anti-diuretic hormone (Vasopressin) 
(g) Adrenaline 
 
 
Question 2: 
What would a child suffer from, if there was hyposecretion from his thyroid? 
Solution 2: 
If there was hyposecretion of the thyroid gland in a child; the child will suffer from cretinism. 
The symptoms of cretinism are dwarfism, mental retardation, etc. 
 
 
Question 3: 
Choose the odd one out from each series  
(a) The glands – thyroid, adrenal, pituitary, prostate 
………………………………………… 
(b) The conditions – cretinism, myxoedema, goiter, scurvy 
………………………………………….  
(c) The hormones – insulin, glucagon, cretinism, thyroxine 
…………………………………………. 
(d) The hormonal sources – adrenal cortex, adrenal medualla, cortisone, pituitary. 
…………………………………………….. 
Solution 3: 
(a) Prostate 
(b) Scurvy 
(c) Cretinism 
(d) Cortisone 
 
 
Question 4: 
Identify the odd one in each of the following and mention what the rest are: 
(a) Larynx; glucagon; testosterone; prolactin…………………………………….. 
(b) Adrenaline; penicillin; insulin; thyroxin………………………………… 
(c) Stomach ; ileum; liver; adrenaline………………………………….. 
(d) TSH; GH; ADH; Insulin……………………………………. 
(e) Iodine, cretinism, goiter, myxedema…………………………………. 
Solution 4: 
(a) Larynx 
Reason- Larynx is the sound box while the rest three i.e. glucagon; testosterone and prolactin 
are hormones. 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(b) Penicillin 
       Reason - Penicillin is an antibiotic while adrenaline; insulin; thyroxine are hormones. 
(c) Adrenaline 
      Reason - Adrenaline is a hormone while the stomach, ileum and liver are the organs of the  
      digestive system. 
(d) Insulin 
     Reason- Insulin is secreted by the pancreas while TSH, GH, ADH are the hormones  
      secreted by the pituitary gland. 
(e) Iodine 
      Reason- Iodine is required for the synthesis of thyroxine hormone. While cretinism, goitre,  
      myxoedema are the deficiencies occur due to the deficiency of thyroxine. 
 
 
Question 5: 
Match the items of column I with those of column II 
Column I Column II 
1. ? (beta) cells of islets of 
Langerhans 
(a) condition due to undersecretion of 
thyroxine in adults 
2. Thyroid (b) Glucocorticoids 
3. Cretinism (c) Exophthalmic goitre 
4. Addison's disease (d) Increases heart beat 
5. Hypothyroidism (e) Thyroxine 
6. Myxoedema (f) Adrenal cortex 
7. Adrenaline (g) Insulin 
8. Cortisone 
(h) Under secretion of 
thyroxine in a 
child 
Solution 5: 
Column I Column II 
1. Beta cells of islets of 
Langerhans (g) Insulin 
2. Thyroid (c) Exophthalmic goitre 
3. Cretinism 
(h) Under secretion of thyroxine in a 
child 
4. Addison's disease (b) Glucocorticoids 
5. Hypothyroidism (e) Thyroxine 
6. Myxoedema 
(a) condition due to under     secretion of 
thyroxine in adults 
7. Adrenaline (d) Increases heart beat 
8. Cortisone (f) Adrenal cortex 
 
 
Page 4


 
A. MULTIPLE CHOICE TYPE: 
 
Question 1:  
A gland having endocrine as well as exocrine function is  
(a) pituitary         (b) thyroid        (c) pancreas       (d) adrenal 
Solution 1: 
(c) pancreas 
 
 
Question 2: 
Exophthalmic goitre is caused due to the over activity of  
(a) thymus    (b) thyroid    (c) parathyroid      (d) adrenal cortex. 
Solution 2: 
(b) thyroid 
 
 
Question 3: 
The secretion of ADH (anti-diuretic hormone) is inhibited by 
(a) emotion and stress     (b) nicotine    (c) alcohol   (d) morphine 
Solution 3: 
(c) alcohol 
 m 
 
B. VERY SHORT ANSWER TYPE: 
 
Question 1: 
Name the following: 
(a) The three hormones produced by pancreas 
(b) The hormone produced by adrenal medulla 
(c) The condition caused by the over secretion of insulin 
(d) The hormone secreted by ß (beta) cells of the islets of Langerhans 
(e) The hormone which increases blood pressure 
(f) The hormone causing more urine formation 
(g) The hormone which stimulates the entire sympathetic nervous system. 
Solution 1: 
(a) Insulin, glucagon, somatostatin 
(b) Adrenaline 
(c) Hypoglycemia 
 
Class X Chapter 9 – Endocrine Glands Biology 
______________________________________________________________________________ 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(d) Insulin 
(e) Adrenaline 
(f) Anti-diuretic hormone (Vasopressin) 
(g) Adrenaline 
 
 
Question 2: 
What would a child suffer from, if there was hyposecretion from his thyroid? 
Solution 2: 
If there was hyposecretion of the thyroid gland in a child; the child will suffer from cretinism. 
The symptoms of cretinism are dwarfism, mental retardation, etc. 
 
 
Question 3: 
Choose the odd one out from each series  
(a) The glands – thyroid, adrenal, pituitary, prostate 
………………………………………… 
(b) The conditions – cretinism, myxoedema, goiter, scurvy 
………………………………………….  
(c) The hormones – insulin, glucagon, cretinism, thyroxine 
…………………………………………. 
(d) The hormonal sources – adrenal cortex, adrenal medualla, cortisone, pituitary. 
…………………………………………….. 
Solution 3: 
(a) Prostate 
(b) Scurvy 
(c) Cretinism 
(d) Cortisone 
 
 
Question 4: 
Identify the odd one in each of the following and mention what the rest are: 
(a) Larynx; glucagon; testosterone; prolactin…………………………………….. 
(b) Adrenaline; penicillin; insulin; thyroxin………………………………… 
(c) Stomach ; ileum; liver; adrenaline………………………………….. 
(d) TSH; GH; ADH; Insulin……………………………………. 
(e) Iodine, cretinism, goiter, myxedema…………………………………. 
Solution 4: 
(a) Larynx 
Reason- Larynx is the sound box while the rest three i.e. glucagon; testosterone and prolactin 
are hormones. 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(b) Penicillin 
       Reason - Penicillin is an antibiotic while adrenaline; insulin; thyroxine are hormones. 
(c) Adrenaline 
      Reason - Adrenaline is a hormone while the stomach, ileum and liver are the organs of the  
      digestive system. 
(d) Insulin 
     Reason- Insulin is secreted by the pancreas while TSH, GH, ADH are the hormones  
      secreted by the pituitary gland. 
(e) Iodine 
      Reason- Iodine is required for the synthesis of thyroxine hormone. While cretinism, goitre,  
      myxoedema are the deficiencies occur due to the deficiency of thyroxine. 
 
 
Question 5: 
Match the items of column I with those of column II 
Column I Column II 
1. ? (beta) cells of islets of 
Langerhans 
(a) condition due to undersecretion of 
thyroxine in adults 
2. Thyroid (b) Glucocorticoids 
3. Cretinism (c) Exophthalmic goitre 
4. Addison's disease (d) Increases heart beat 
5. Hypothyroidism (e) Thyroxine 
6. Myxoedema (f) Adrenal cortex 
7. Adrenaline (g) Insulin 
8. Cortisone 
(h) Under secretion of 
thyroxine in a 
child 
Solution 5: 
Column I Column II 
1. Beta cells of islets of 
Langerhans (g) Insulin 
2. Thyroid (c) Exophthalmic goitre 
3. Cretinism 
(h) Under secretion of thyroxine in a 
child 
4. Addison's disease (b) Glucocorticoids 
5. Hypothyroidism (e) Thyroxine 
6. Myxoedema 
(a) condition due to under     secretion of 
thyroxine in adults 
7. Adrenaline (d) Increases heart beat 
8. Cortisone (f) Adrenal cortex 
 
 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
Question 6: 
match the conditions in column A with the cause in column B. 
A (Condition) B (Cause) 
(a) Dwarfism and mental retardation 
i. shortage of glucose in blood 
(b) Diabetes mellitus ii. Over secretion of growth hormone 
(c) Excess of glucose in blood 
iii. Insulin shock 
(d) Gigantism 
iv. Over secretion of thyroxine 
(e) Enlargement of breasts in adult 
males 
v. Hypothyroidism 
(f) Exophthalmic goitre 
vi. Over secretion of cortical hormones 
 
Solution 6: 
A (Condition) B (Cause) 
(a) Dwarfism and mental retardation 
v. Hypothyroidism 
(b) Diabetes mellitus i. Excess of glucose in blood 
(c) Shortage of glucose in blood 
iii. Insulin shock 
(d) Gigantism 
ii. Over secretion of growth hormone 
(e) Enlargement of breasts in adult 
males 
vi. Over secretion of cortical hormones 
(f) Exophthalmic goitre 
iv. Over secretion of thyroxine 
 
 
C. SHORT ANSWER TYPE: 
 
Question 1: 
Mention which of the statements are true (T) and which are false (F). Give reason in support of 
your answer. 
(a) Adrenaline is often described as emergency hormone 
(b) There are two kinds of diabetes (mild and severe) related with two different hormones. 
(c) Simple goiter can be prevented by using iodised salt in food. 
(d) Pituitary is popularly called the master gland 
(e) Harmones ‘obey’ the commands like ‘enough, slow down or ‘two little, speed up’. 
(f) Gigantism and dwarfirm in humans basically depend on the qualtity and quantity of the food 
eaten during early growing age.  
Solution 1: 
(a) True 
Reason- Adrenaline is described as emergency hormone because during any emergency 
situation more adrenaline is secreted which makes the heart beat faster, increases the 
breathing, releases more glucose into the blood stream to fulfill the energy requirement. 
Page 5


 
A. MULTIPLE CHOICE TYPE: 
 
Question 1:  
A gland having endocrine as well as exocrine function is  
(a) pituitary         (b) thyroid        (c) pancreas       (d) adrenal 
Solution 1: 
(c) pancreas 
 
 
Question 2: 
Exophthalmic goitre is caused due to the over activity of  
(a) thymus    (b) thyroid    (c) parathyroid      (d) adrenal cortex. 
Solution 2: 
(b) thyroid 
 
 
Question 3: 
The secretion of ADH (anti-diuretic hormone) is inhibited by 
(a) emotion and stress     (b) nicotine    (c) alcohol   (d) morphine 
Solution 3: 
(c) alcohol 
 m 
 
B. VERY SHORT ANSWER TYPE: 
 
Question 1: 
Name the following: 
(a) The three hormones produced by pancreas 
(b) The hormone produced by adrenal medulla 
(c) The condition caused by the over secretion of insulin 
(d) The hormone secreted by ß (beta) cells of the islets of Langerhans 
(e) The hormone which increases blood pressure 
(f) The hormone causing more urine formation 
(g) The hormone which stimulates the entire sympathetic nervous system. 
Solution 1: 
(a) Insulin, glucagon, somatostatin 
(b) Adrenaline 
(c) Hypoglycemia 
 
Class X Chapter 9 – Endocrine Glands Biology 
______________________________________________________________________________ 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(d) Insulin 
(e) Adrenaline 
(f) Anti-diuretic hormone (Vasopressin) 
(g) Adrenaline 
 
 
Question 2: 
What would a child suffer from, if there was hyposecretion from his thyroid? 
Solution 2: 
If there was hyposecretion of the thyroid gland in a child; the child will suffer from cretinism. 
The symptoms of cretinism are dwarfism, mental retardation, etc. 
 
 
Question 3: 
Choose the odd one out from each series  
(a) The glands – thyroid, adrenal, pituitary, prostate 
………………………………………… 
(b) The conditions – cretinism, myxoedema, goiter, scurvy 
………………………………………….  
(c) The hormones – insulin, glucagon, cretinism, thyroxine 
…………………………………………. 
(d) The hormonal sources – adrenal cortex, adrenal medualla, cortisone, pituitary. 
…………………………………………….. 
Solution 3: 
(a) Prostate 
(b) Scurvy 
(c) Cretinism 
(d) Cortisone 
 
 
Question 4: 
Identify the odd one in each of the following and mention what the rest are: 
(a) Larynx; glucagon; testosterone; prolactin…………………………………….. 
(b) Adrenaline; penicillin; insulin; thyroxin………………………………… 
(c) Stomach ; ileum; liver; adrenaline………………………………….. 
(d) TSH; GH; ADH; Insulin……………………………………. 
(e) Iodine, cretinism, goiter, myxedema…………………………………. 
Solution 4: 
(a) Larynx 
Reason- Larynx is the sound box while the rest three i.e. glucagon; testosterone and prolactin 
are hormones. 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(b) Penicillin 
       Reason - Penicillin is an antibiotic while adrenaline; insulin; thyroxine are hormones. 
(c) Adrenaline 
      Reason - Adrenaline is a hormone while the stomach, ileum and liver are the organs of the  
      digestive system. 
(d) Insulin 
     Reason- Insulin is secreted by the pancreas while TSH, GH, ADH are the hormones  
      secreted by the pituitary gland. 
(e) Iodine 
      Reason- Iodine is required for the synthesis of thyroxine hormone. While cretinism, goitre,  
      myxoedema are the deficiencies occur due to the deficiency of thyroxine. 
 
 
Question 5: 
Match the items of column I with those of column II 
Column I Column II 
1. ? (beta) cells of islets of 
Langerhans 
(a) condition due to undersecretion of 
thyroxine in adults 
2. Thyroid (b) Glucocorticoids 
3. Cretinism (c) Exophthalmic goitre 
4. Addison's disease (d) Increases heart beat 
5. Hypothyroidism (e) Thyroxine 
6. Myxoedema (f) Adrenal cortex 
7. Adrenaline (g) Insulin 
8. Cortisone 
(h) Under secretion of 
thyroxine in a 
child 
Solution 5: 
Column I Column II 
1. Beta cells of islets of 
Langerhans (g) Insulin 
2. Thyroid (c) Exophthalmic goitre 
3. Cretinism 
(h) Under secretion of thyroxine in a 
child 
4. Addison's disease (b) Glucocorticoids 
5. Hypothyroidism (e) Thyroxine 
6. Myxoedema 
(a) condition due to under     secretion of 
thyroxine in adults 
7. Adrenaline (d) Increases heart beat 
8. Cortisone (f) Adrenal cortex 
 
 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
Question 6: 
match the conditions in column A with the cause in column B. 
A (Condition) B (Cause) 
(a) Dwarfism and mental retardation 
i. shortage of glucose in blood 
(b) Diabetes mellitus ii. Over secretion of growth hormone 
(c) Excess of glucose in blood 
iii. Insulin shock 
(d) Gigantism 
iv. Over secretion of thyroxine 
(e) Enlargement of breasts in adult 
males 
v. Hypothyroidism 
(f) Exophthalmic goitre 
vi. Over secretion of cortical hormones 
 
Solution 6: 
A (Condition) B (Cause) 
(a) Dwarfism and mental retardation 
v. Hypothyroidism 
(b) Diabetes mellitus i. Excess of glucose in blood 
(c) Shortage of glucose in blood 
iii. Insulin shock 
(d) Gigantism 
ii. Over secretion of growth hormone 
(e) Enlargement of breasts in adult 
males 
vi. Over secretion of cortical hormones 
(f) Exophthalmic goitre 
iv. Over secretion of thyroxine 
 
 
C. SHORT ANSWER TYPE: 
 
Question 1: 
Mention which of the statements are true (T) and which are false (F). Give reason in support of 
your answer. 
(a) Adrenaline is often described as emergency hormone 
(b) There are two kinds of diabetes (mild and severe) related with two different hormones. 
(c) Simple goiter can be prevented by using iodised salt in food. 
(d) Pituitary is popularly called the master gland 
(e) Harmones ‘obey’ the commands like ‘enough, slow down or ‘two little, speed up’. 
(f) Gigantism and dwarfirm in humans basically depend on the qualtity and quantity of the food 
eaten during early growing age.  
Solution 1: 
(a) True 
Reason- Adrenaline is described as emergency hormone because during any emergency 
situation more adrenaline is secreted which makes the heart beat faster, increases the 
breathing, releases more glucose into the blood stream to fulfill the energy requirement. 
Class X Chapter 10 – Endocrine Glands Biology 
______________________________________________________________________________ 
 
(b) False 
Reason- The two different kinds of diabetes are diabetes insipidus caused due to 
insufficient secretion of vasopressin and the other is 'diabetes mellitus' caused due to 
hyposecretion of insulin but they cannot be described as mild and severe. 
(c) True 
Reason-Iodine is an active ingredient in the production of the thyroxine hormone. 
(d) True 
Reason- Pituitary gland controls the functioning of all the other endocrine glands. 
(e) True 
Reason- Hormones are poured directly into blood the blood stream and control 
physiological processes by chemical means. Their action depends on the feedback 
mechanism. 
(f) True 
Reason- Gigantism and dwarfism are controlled by the growth hormone from the pituitary 
gland. Growth hormone is much more active in children for their normal body growth 
along with which necessary substance required for the synthesis of growth hormone need to 
be consumed. 
 
 
Question 2: 
How do endocrine glands differ from other glands? 
Solution 2: 
Endocrine glands are ductless glands, means they pour their secretion i.e. hormones directly into 
the blood stream while the other glands are exocrine glands which have ducts. Through ducts 
they pour their secretions (not hormones) into the blood stream. 
 
 
Question 3: 
Mention any two differences between a hormone and an enzyme. 
Solution 3: 
Hormones unlike enzymes are secreted by the endocrine glands only. Also the hormones unlike 
the enzymes are poured directly into the blood. Hormones can be peptides, steroids, amine but 
all enzymes are proteins. 
 
 
Question 4: 
Do you agree with the statement – “ All hormones are chemical signals”? Yes / No . Justify your 
answer. 
Solution 4: 
Chemically hormones are peptides, amines or steroids. They are involved in regulating. The 
metabolism of the body. They can bring about specific chemical changes during metabolic  
process. Therefore hormones can be termed as 'chemical messengers'.