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Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 12 - Endocrine System [Latest edition]

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Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 12 - Endocrine System - Shaalaa.com
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Solutions for Chapter 12: Endocrine System

Below listed, you can find solutions for Chapter 12 of CISCE Lakhmir Singh for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई.


Intex QuesionsEXERCISE
Intex Quesions [Pages 198 - 207]

Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई 12 Endocrine System Intex Quesions [Pages 198 - 207]

TEST YOUR UNDERSTANDING - 1 Fill in the Blanks

1.Page 198

______ is an endocrine and ______ is a heterocrine gland.

2.Page 198

Exocrine glands have ______ while ______ are ductless.

3.Page 198

______ behaves both as endocrine and exocrine gland.

1.Page 198

True or False.

Capillaries carry hormones to the target sites.

2.Page 198

True or False.

The person who specialises in endocrinology is known as endocrinologist.

Multiple Choice Questions

1.Page 198

______ system and nervous system work in close association.

  • Reproductive

  • Endocrine

  • Excretory

  • Digestive

2.Page 198

A number of glands secrete ______, which reaches sites of action through the blood for better coordination of the body.

  • Enzymes

  • Proteins

  • Glucose

  • Hormones

3.Page 198

One of the following is not an endocrine gland.

  • Salivary

  • Pituitary

  • Pineal

  • Ovaries

TEST YOUR UNDERSTANDING - 2

1.Page 200

True or False.

Insulin is not a peptide hormone.

2.Page 200

True or False.

Glucagon is responsible for the maintenance of normal blood pressure.

3.Page 200

True or False.

The weight of the pancreas is around 100 g.

4.Page 200

True or False.

There are five types of cells in the pancreas.

5.Page 200

True or False.

F cells secrete 36 amino acids.

Fill in the Blanks

1.Page 200

Diabetes mellitus is caused due to the deficiency of ______.

2.Page 200

Alpha cell of islets of Langerhans secretes ______.

3.Page 200

Diabetes insipidus is caused due to the deficiency of ______.

4.Page 200

Glucagon is secreted by the ______ cells and pancreatic juice is secreted by the ______ cells of islets of Langerhans.

5.Page 200

______ cells secrete pancreatic juice and ______ cells form islets of Langerhans which secrete ______.

THINK AND ANSWER

1.Page 201

Can a person live without a pituitary gland?

2.Page 201

When was the study of endocrine first started?

3.Page 201

How did people know about diabetes mellitus?

4.Page 201

Why is osteoporosis of ageing people connected with hormones?

TEST YOUR UNDERSTANDING - 3 Fill in the Blanks

1.Page 202

Anterior lobe of pituitary gland is called ______.

2.Page 202

Six hormones are secreted by the part of pituitary is ______ lobe while ______ hormone is secreted by intermediate lobe.

3.Page 202

______ is caused due to oversecretion of growth hormone in children.

1.Page 202

True or False.

Acromegaly is caused by oversecretion of growth hormone after adolescence.

2.Page 202

True or False.

Posterior lobe secretes FSH and LH.

1.Page 202

Match the Following:

Column I Column II
(i) ACTH (a) Growth hormone
(ii) FSH (b) Prolactin
(iii) LH (c) Follicle-stimulating hormone
(iv) PRL (d) Thyroid-stimulating hormone
(v) GH (e) Luteinising hormone
(vi) TSH (f) Adrenocorticotropic hormone

TEST YOUR UNDERSTANDING - 4 Fill in the Blanks

1.Page 204

There are ______ groups of steroid hormones which is secreted by adrenal ______.

2.Page 204

Epinephrine or norepinephrine are also known as ______ or ______ hormone.

3.Page 204

______ disease is caused by deficiency of mineralocorticoids.

4.Page 204

______ the glucocorticoids are secreted by adrenal cortex.

5.Page 204

______ are responsible for development of secondary sexual characteristics in both the sexes.

1.Page 204

Give One Word Answer:

Disorder caused by high amount of sex corticoids in female.

2.Page 204

Give One Word Answer:

Hormone that initiates stress responses.

3.Page 204

Give One Word Answer:

Disorder due to hyposecretion of mineralocorticoids.

4.Page 204

Give One Word Answer:

Triangular-shaped structure over kidney.

TEST YOUR UNDERSTANDING - 5

1.Page 206

Give One Word Answer:

Shape of the thyroid gland.

2.Page 206

Give One Word Answer:

Thyroid gland is regulated by which feedback mechanism.

3.Page 206

Give One Word Answer:

Secretion of thyroid gland.

4.Page 206

Give One Word Answer:

Name the disease where the person has protruding eyeballs.

1.Page 207

True or False.

Thyroid hormone is classified into three types.

2.Page 207

True or False.

Hormones are secreted by the exocrine cells.

3.Page 207

True or False.

Hormones are very effective in high concentration.

4.Page 207

True or False.

Hormones are also called autocoids.

EXERCISE [Pages 208 - 211]

Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई 12 Endocrine System EXERCISE [Pages 208 - 211]

Objective Questions

1.Page 208

True or False.

Pituitary gland is divided into two regions: anterior and posterior lobes.

2.Page 208

True or False.

Hormones is also called the chemical messenger.

3.Page 208

True or False.

Takamine is the father of endocrinology.

4.Page 208

True or False.

Adrenaline and glucocorticoids raise blood glucose level.

5.Page 208

True or False.

ACTH is responsible to stimulate thyroid gland.

Fill in the Blanks

1.Page 208

Gigantism is caused due to high secretion of _______ of the pituitary gland.

2.Page 208

______, ______ and ______ are caused by the improper secretion of the growth hormone.

3.Page 208

Deficiency of mineralocorticoids causes _______ disease.

4.Page 208

_______ raises blood glucose level.

5.Page 208

_______ is due to the deficiency of insulin.

1.Page 208

Match the Following:

Column I Column II
(i) Neurohypophysis (a) TSH
(ii) Adenohypophysis (b) Oxytocin
(iii) Thyroid (c) Milk ejection hormone
(iv) Oxytocin (d) Goitre
(v) Adrenal virilism (e) Sex corticoids
1.Page 209

Name the following:

The largest endocrine gland.

2.Page 209

Give One Word Answer:

Hormone that is called the flight or fight hormone.

3.Page 209

Give One Word Answer:

This gland is located at the dorsal surface of apex of kidney.

4.Page 209

Give One Word Answer:

Pancreatic polypeptide secreted by a type of cells in pancreas.

5.Page 209

Give One Word Answer:

Basal metabolic rate is regulated by this hormone.

Multiple Choice Questions

1.Page 209

Cretinism is a disorder caused due to ______.

  • hyponsecretion of thyroxine

  • hyponsecretion of growth hormone

  • hyponsecretion of insulin

  • hyponsecretion of adrenaline

2.Page 209

Which one is an emergency gland?

  • Testes

  • Pituitary

  • Adrenal

  • Thyroid

3.Page 209

The oxytocin is responsible for the ______.

  • Growth

  • Lactation

  • Childbirth

  • Both Lactation and Childbirth

4.Page 209

Proper normal growth of humans is induced by ______.

  • STH

  • TSH

  • Vasopressin

  • Prolactin

5.Page 209

The anterior lobe of the pituitary gland is called ______.

  • Pars distalis

  • Pars tuberalis

  • Pars intermedia

  • Both Pars tuberalis and Pars intermedia

6.Page 209

Reabsorption of water in the DCT of the nephron occurs in response to ______.

  • Oxytocin

  • Thyrotropin

  • Vasopressin

  • Both Oxytocinand Vasopressin

7.Page 209

How many hormones are secreted by the adenohypophysis?

  • 2

  • 5

  • 8

  • 6

8.Page 209

Somatostatin is an inhibitor of ______.

  • Insulin

  • Glucagon

  • Both insulin and glucagon

  • Vasopressin

9.Page 209

Gonadocorticoids are:

  • Androgens

  • Oestrogens

  • Progesterone

  • All of these

10.Page 209

Mineralocorticoids are responsible for:

  • Maintaining sodium and potassium levels in the blood

  • Raising blood glucose levels

  • Developing secondary sexual characteristics

  • Initiating stress responses

1.Page 209

Given below are certain groups of terms. In each group the first pair indicates a relationship between the two terms. Rewrite and complete the second pair on a similar basis:

Insulin : Beta-cells :: Glucagon : ________

1.Page 209

Identify the ODD term and name the CATEGORY to which the remaining three belong:

Exophthalmic goitre, Simple goitre, Cretinism, Myxoedema

1.Page 209

Expand the following biological abbreviation: 

TSH

1.Page 209

Choose the ODD one out of the following terms given and name the CATEGORY to which the others belong:

ACTH, TSH, ADH, FSH

Descriptive Questions Short Answer Questions

1.Page 209

Which gland is called as an emergency gland and why?

2.Page 209

Name the endocrine gland found in our body.

3.Page 209

Name the three types of glands with example.

4.Page 209

Name the hormone which is responsible for proper growth in humans.

5. (i)Page 210

Expand the abbreviation ADH.

5. (ii)Page 210

Write the full form of STH.

5. (iii)Page 210

Write the full form of IST.

5. (iv)Page 210

Write the full form of LT.

6. (i)Page 210

Define the following term:

Hormones

6. (ii)Page 210

Define:

Gland

6. (iii)Page 210

Define the following:

Endocrine gland

6. (iv)Page 210

Define the following:

Exocrine gland

6. (v)Page 210

Define:

Feedback mechanism

1.Page 210

Differentiate: Nervous control and Hormonal control.

2.Page 210

Differentiate between the Following:

Adrenal gland and Pancreas

3.Page 210

Differentiate: Acromegaly and Myxoedema.

4.Page 210

Distinguish between diabetes mellitus and diabetes insipidus.

5.Page 210

Differentiate: Endocrine gland and Exocrine gland.

Long Answer Questions

1.Page 210

Which hormone is secreted by the gonads? Describe their role played by hormone in our body.

2.Page 210

Explain the disorder caused by the malfunctioning of the pituitary gland.

3.Page 210

Explain about the feedback mechanism of thyroid.

4. (i)Page 210

Explain the diseases occurring in:

Thyroid

4. (ii)Page 210

Explain the diseases occurring in:

Pancreas

4. (iii)Page 210

Explain the diseases occurring in:

Adrenal

5. (i)Page 210

Explain in detail:

Thyroid

5. (ii)Page 210

Explain in detail:

Adrenal

5. (iii)Page 210

Explain in detail:

Pituitary

5. (iv)Page 210

Explain in detail:

Pancreas

Diagram Based Questions

1.Page 210

Complete the table:

Name of the Hormone Endocrine Gland Function
(i) (ii) Deposits extra glucose of blood as glycogen
Growth Hormone (iii) (iv)
(v) Thyroid (vi)
(vii) (viii) Prepare body for any emergencу
Oxytocin (ix) (x)
2.Page 210

The diagram given below represents an endocrine gland in the human body. Study the diagram and answer the following questions:

  1. Identify the endocrine gland. Where is it located?
  2. Why is the above gland referred to as the 'Master gland'?
  3. Name the hormone which in deficiency causes diabetes insipidus.
  4. Explain the term 'hormone'. What is the role of tropic hormones in the human body?
  5. Which lobe of the above gland secretes:
    1. Oxytocin
    2. ACTH
    3. Growth hormone

DO IT RIGHT

1.Page 211

Do you know about hormonal imbalance? What are the symptoms you look to know that a person is suffering from hormonal imbalance? Both you and your friend decided to ask a medical practitioner of what exactly happens if one does not take care of it?

Visit your known practitioner and learn the consequence of such effects on human body. Then, with the help of your friend prepare a demonstration to make your friends aware of this. You can use visuals, charts, PPT presentation and handouts.

Solutions for 12: Endocrine System

Intex QuesionsEXERCISE
Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 12 - Endocrine System - Shaalaa.com

Lakhmir Singh solutions for बायोलॉजी [इंग्रजी] इयत्ता १० आईसीएसई chapter 12 - Endocrine System

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