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Endocrine Glands - The Producers Of Chemical Messengers

Question
ICSEENIBI10003499
Wired Faculty App

(i) Draw a well-labelled diagram to show the metaphase stage of mitosis in an animal cell having four chromosomes.

(ii) State any two reasons for population explosion in India.

(iii)Give biological reasons for the following:

 (1) Pituitary gland is also known as the master gland.

 (2) Gametes have a haploid number of chromosomes.

Solution

(i) 

(ii) Reasons for the population explosion in India:
1. Illiteracy: Most of the people in rural areas are illiterate, ignorant.
2. Traditional beliefs: Among the people from the lower strata of society, children are regarded as a gift of God and a sign of prosperity.

(iii)
1. The pituitary gland controls the secretion of all the other endocrine glands. Therefore, the pituitary gland is also known as the master gland.

2. Gametes are formed due to meiosis. Meiosis is the reduction division during which daughter cells receive half the number of chromosomes as that of the parent cells. Therefore, gametes have a haploid number of chromosomes.

Some More Questions From Endocrine Glands - The Producers of Chemical Messengers Chapter

Give reasons for the following:

People living in hilly regions usually suffer from simple goitre.

Study the diagram given below and answer the following questions:



(i) Name the pancreatic cells which produce (1) glucagon and (2) insulin.
(ii) State the main function of (1) glucagon and (2) insulin.
(iii) Why is the pancreas referred to as an exo-endocrine gland?
(iv) Why is insulin not given orally but is injected into the body
(v) What is the technical term for the cells of the pancreas which produce endocrine hormones? 
(vi) Where in the body is the pancreas located?

S.no Category  Odd One
0

Organelles of Plant cell

 Centrosomes

Given below is an example of a certain structure and its special functional activity:

Example:
(0) Ribosomes and protein synthesis.
On a similar pattern, complete the following:

(i) Hypothalamus and __ .

Explain the following terms:

(iii) Hormones

Given below is an outline of the human body showing the important glands.

(i) Name the glands marked 1 to 5.

(ii) Name the hormone secreted by 2. Give one important function of this hormone.

(iii) Name the endocrine cells present in part 3.

(iv) Name the hormone secreted by part 4. Give one important function of this hormone. 

State whether the following statements are true or false. If false, write the correct
form of the statement by changing the first or last word only.

Select and rewrite the correct answer to the given statements from the four choices given below each statement:

(ii) Insulin is secreted by the

Name the hormone responsible for the following functions:

(i) Increase in heartbeat

Name the hormone responsible for the following functions:

(ii) Maintains glucose level of the blood.

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