Chemical Coordinators

Q.

What is the role of ethylene in plant growth.

Q.

Ethylene is the plant hormone found in the form of gas.

1. Ethylene

2. Zeatin

Q.

Name a plant hormone that helps in ripening of fruits.

Q. What will happen if: [3 MARKS]
(a) the adrenal gland is removed?
(b) blood sugar level falls?
(c) thyroid gland does not function properly?

Q.

What does ethylene do to fruit?

Q.

Name a plant hormone that is greatly effective in fruit ripening.

Q. Growth hormone in humans is secreted by __________.

1. adrenal gland
2. thymus
3. pituitary gland
4. thyroid gland

Q. Which one of the following is a hormonal disease/disorder?

1. Scurvy
2. Malaria
3. Diabetes
4. Tuberculosis

Q.

Ethylene is a gaseous phytohormone.

1. Ethylene

2. Zeatin

Q. Describe the role of the thyroid gland in human body.
[1 Mark]

Q.

Differentiate between the following pairs:

Diabetes mellitus and Diabetes insipidus.

Q. List three functions of ethylene in plants.

Q. Insulin causes rapid movement of glucose from blood to hepatocytes and adipocytes resulting in

1. Hyperglycemia
2. Hypoglycemia
3. Diabetes
4. None

Q. The hormone which regulates the amount of glucose in the blood by converting excess of glucose into glycogen is _____.

1. glucagon
2. somatostatin
3. pepsin
4. insulin

Q.

Ethylene is the plant hormone found in the form of gas.

1. True

2. False

Q. Identify the gland which swells due to goitre.

1. 
2. 
3. 
4. 

Q. Which of the following hormone influences the metabolic activities and general growth rate of the body?

1. Thyroxin
2. Adrenaline
3. Insulin
4. Testosterone

Q. Hyposecretion of ADH causes

1. Diabetes mellitus
2. Diabetes insipidus
3. Hypercalcemia
4. None of the above

Q.

Which of the following is an endocrine gland?

1. Sweat gland

2. Salivary gland

3. Pituitary gland

4. Sebaceous gland

Q. Growth hormone in humans is secreted by __________.

1. pituitary gland
2. thyroid gland
3. adrenal gland
4. thymus

Q. Which one of the following is a hormonal disease/disorder?

1. Diabetes
2. Scurvy
3. Tuberculosis
4. Malaria

Q.

Endocrine glands are known as ductless glands and transport the hormones through the blood to the target tissue/cell.

1. True

2. False

Q. The hormone which regulates the amount of glucose in the blood by converting excess of glucose into glycogen is _____.

1. glucagon
2. insulin
3. somatostatin
4. pepsin

Q.

Ethylene is the plant hormone found in the form of gas.

1. Ethylene

2. Zeatin

Q. Which of the following is not an endocrine gland?

1. Pituitary gland
2. Salivary gland
3. Thyroid gland
4. Sweat gland