Endocrine System Class 10 Concise Progress Check ICSE Biology Selina Solutions Ch-12. In this article you will get the solutions of All Progress Check 1, 2, 3 and 4 Questions. Visit official website CISCE for detail information about ICSE Board Class-10 Biology.
Endocrine System Class 10 Concise Progress Check ICSE Biology Selina Solutions Ch-12
| Board | ICSE |
| Subject | Biology |
| Class | 10 |
| Book | Selina Concise |
| Chapter-12 | Endocrine System |
| Topics | Solutions of Progress Check 1, 2, 3 and 4 Questions |
Part-1 Progress Check Questions on Endocrine System
Page 153
Que-1: Fill in the blanks by selecting the appropriate alternative from those given in brackets.
(i) Regulation of activities inside the body are brought about by …………… and …………… systems. (nervous/digestive/endocrine)
(ii) Hormones are secreted directly into the …………… . (organs/lymph/blood)
(iii) Chemically, some hormones are …………… , some steroids, some …………… . (proteins/amines/carbohydrates)
(iv) Both …………… or deficiency of hormones lead to serious consequences. (excess/absence)
(v) Hormones produced in one species usually show …………… influence in other species. (similar/different)
Ans:
(i) Nervous, endocrine
(ii) Blood
(iii) Proteins, amines
(iv) Excess
(v) Similar
Que-2: Give the characteristics of hormones pertaining to
(i) Site of action
(ii) Chemical nature
(iii) Manner of transportation.
Ans:
(i) The site of action of hormones is usually far away from their source and that is why the hormones are carried by blood from their source to their target cells.
(ii) Some hormones chemically are steroids, some amines, and some peptides.
For example,
Protein as hormone : insulin
Steroid as hormone : testosterone
Amines as hormone : adrenaline
(iii) The endocrine glands being ductless, secretes the hormones directly into the blood which then transports the hormones to its target cells and organs.
Part-2 Progress Check Questions on Endocrine System
Endocrine System ICSE Progress Check Class-10 Concise Selina Biology
Page 156
Que-1: Mention the three types of cells of the islets of Langerhans and the name of the hormone they secrete.
Ans:
(i) Glucagon
(ii) Insulin
(iii) Somatostatin
Que-2: Mention the two principal ways in which insulin acts
Ans:
(i) It converts excess glucose into glycogen and stores them in liver and muscles.
(ii) Insulin promotes glucose utilization by the body cells.
Que-3: Name the following conditions
(i) Passage of much glucose in urine
(ii) Overdose of insulin makes the diabetic patient unconscious
Ans:
(i) Diabetes mellitus
(ii) Insulin shock
Que-4: List any three symptoms of diabetes mellitus.
Ans:
(i) High concentration of sugar in the blood.
(ii) Urine loaded with sugar is excreted.
(iii) Thirsty feeling due to frequent urination and loss of weight.
Que-5: Name the two categories of hormones secreted by adrenal cortex.
Ans:
The adrenal cortex produces three main types of steroid hormones : mineralocorticoids, glucocorticoids, and androgens.
Que-6: List any two effects of adrenaline.
Ans:
(i) Increase in heart beats causing it to send more glucose and oxygen to the muscle leading to thumping of heart.
(ii) Constricts the arterioles so that blood goes less to the skin and more to the muscle leaving the person pale
Part-3 Progress Check Questions on Endocrine System
Endocrine System ICSE Progress Check Class-10 Concise Selina Biology
Page 158
Que-1: Fill in the blanks with the correct alternative :
(i) Thyroid is located close to …………………. (larynx/kidney)
(ii) Cretinism is caused due to…………………. of thyroxin. (under secretion/over secretion)
(iii) Oversecretion of thyroxin causes …………………………. goitre. (simple/exophthalmic)
(iv) The condition showing swelling in face and hands and sluggishness due to hypothyroidism is called……………….. (cretinism/myxoedema)
(v) The hormone concerned with facing dangers is …………………. (thyroxine/cortisone/adrenalin)
(vi) Cortex and medulla are the two regions of ……………… (thyroid/adrenal)
(vii) One of the effects of increased secretion of adrenaline is ………………….. (Dry mouth/ slowing of heart beat/arterioles of the digestive system dilate)
Ans:
(i) Larynx
(ii) Under-secretion
(iii) Exophthalmic
(iv) Myxoedema
(v) Adrenalin
(vi) Adrenal
(vii) Dry mouth
Part-4 Progress Check Questions on Endocrine System
Endocrine System ICSE Progress Check Class-10 Concise Selina Biology
Page 159
Que-1: Fill in the blanks with the correct alternative :
(i) Thyroid is located close to …………………. (larynx/kidney)
(ii) Cretinism is caused due to…………………. of thyroxin. (under secretion/over secretion)
(iii) Oversecretion of thyroxin causes …………………………. goitre. (simple/exophthalmic)
(iv) The condition showing swelling in face and hands and sluggishness due to hypothyroidism is called……………….. (cretinism/myxoedema)
(v) The hormone concerned with facing dangers is …………………. (thyroxine/cortisone/adrenalin
(vi) Cortex and medulla are the two regions of ……………… (thyroid/adrenal)
(vii) One of the effects of increased secretion of adrenaline is ………………….. (Dry mouth/ slowing of heart beat/arterioles of the digestive system dilate)
Ans:
(i) Larynx
(ii) Under-secretion
(iii) Exophthalmic
(iv) Myxoedema
(v) Adrenalin
(vi) Adrenal
(vii) Dry mouth
–: End of Endocrine System Class 10 Concise Progress Check Questions Selina Solutions :–
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