1 Marks Questions
Question 1 : Name the hormone secreted by the islets of Langerhans.
Answer : Insulin or glucagon are the hormones secreted by the islets of Langerhans.
Question 2 : Choose the correct answer from the four options given below Cretinism and myxoedema are due to
a) Hypersecretion of thyrosine
b) Hypersecretion of growth hormone
c) Hyposecretion of thyrosine
d) Hyposecretion of growth hormone
Answer : c) Hyposecretion of thyrosine
Question 3 : Explain the following biological abbreviation.
TSH.
Answer : TSH is the abbreviation for Thyroid Stimulating Hormone.
Question 4 : Briefly explain the term hormones.
Answer : Hormones are the secretions from specific cells or glands in the body which are poured into the blood and have their effect on target cells or specific organs or tissues of the body. They may be chemically proteins, amino acids or steroids in nature.
Question 5 : Give technical term for the following.
Group of hormones which influence other endocrine glands to produce hormones.
Answer : Tropic hormones are the group of hormones which influence other endocrine glands to produce hormones.
Question 6 : State the exact location of adrenal gland.
Answer : Adrenal gland is situated above each kidney in the form of cap-like structure.
Question 7 : Choose the correct answer from the four options given below
A gland which secretes both hormone and enzyme is
a) pituitary
b) pancreas
c) thryoid
d) adrenal
Answer : b) pancreas
Question 8 : Briefly explain the term diabetes insipidus.
Answer : Diabetes insipidus is the condition which occurs due to low secretion of hormone called vasopressin or anti-diuretic hormone from the posterior lobe of pituitary gland.
The disease is characterised by excretion of large amounts of urine and subsequent dehydration and thirst.
Question 9 : Name the hormone that helps you to increase the reabsorption of water from the kidney tubules.
Answer : Antidiuretic Hormone (ADH)/Vaspressin is the hormone that helps to increase the reabsorption of water from the kidney tubules.
Question 10 : State the function of β cells of pancreas.
Answer : Beta cells of pancreas secrete insulin that helps to lower the level of glucose in blood.
Question 11 : Give the exact location of thyroid gland.
Answer : Thyroid gland is located in the front part of the neck, attached to trachea below layrnx.
Question 12 : Differentiate between the following pairs on the basis of what is mentioned in bracket?
Diabetes mellitus and diabetes insipidus. (reason/cause)
Answer : Diabetes mellitus occurs due to undersecretion of insulin which in turn increases the level of glucose in blood.
Diabetes insipidus is caused due to low secretion of hormone called vasopressin or anti-diuretic hormone from the posterior lobe of pituitary gland.
Question 13 : Give biological reason for the following
Pituitary gland is also known as the master gland.
Answer : Pituitary gland is also known as master gland because it secretes hormones that regulate activities of other endocrine glands.
Question 14 : Differentiate between the following pair according to what is given in the brackets
Acromegaly and cretinism. (symptoms)
Answer :
Question 15 : Give the exact location of pituitary gland.
Answer : Pituitary gland is located at the base of midbrain below hypothalamus.
Question 16 : Given below is the set consisting of five terms. In a set there is a word which is an odd one. Write down the category of the group having identified the odd one out.
Vasopressin, growth hormone, TSH, ACTH, FSH.
Answer : Odd one : Vasopressin (Secreted by posterior pituitary)
Category : All other hormones are secreted by anterior lobe of pituitary gland.
Question 17 : State the following statement true or false. If false, write the correct form of statement by changing the first or last word only.
The pituitary gland is both exocrine and endocrine in function.
Answer : The statement if false. The pancreas is both exocrine and endocrine in function.
Question 18 : Select and rewrite the correct answer to the given statement from the four choices given below. Insulin is secreted by
a) beta cells of pancreas
b) alpha cells of pancreas
c) delta cells of pancreas
d) None of these
Answer : a) Insulin is secreted by beta cells of pancreas.
Question 19 : State whether the following statement is true or false. If false, rewrite the correct statement by changing only the last word of the statement.
The alpha cells of the pancreas secrete insulin.
Answer : The statement is false. The alpha cells of the pancreas secrete glucagon.
Question 20 : Explain the term tropic hormone.
Answer : Tropic hormones are the group of hormones which influence other endocrine glands to produce hormones.
Question 21 : Name the hormone that releases glucose into blood.
Answer : Glucagone is the hormone that releases glucose in the blood.
Question 22 : Given below are the four terms in which one term is off and cannot be grouped into the category to which the other three belong. Identify the odd one in each set and name the category to which the remaining three belong.
ADH, TSH, NADP, ACTH
Answer : Odd one : NADP (co-factor)
Category : Hormones
Question 23 : State whether the following statement is true or false. If false, rewrite the correct statement by changing the first or last word only.
Hormones are secreted directly into the organs.
Answer : The statement is false. Hormones are secreted directly into the blood.
Question 24 : Given below is a group of terms, in which one term does not fit into the category of the group to which other three belong. Write the category of the group and identify the odd one.
Adrenal, liver, thyroid, pituitary.
Answer : Odd one : Liver
Category : All other are endocrine glands.
Question 25 : Name the hormones secreted by the beta-cells of Islets of Langerhans.
Answer : Insulin is secreted by the beta cells of islets of Langerhans.
Question 26 : Complete the following statements by choosing the correct alternative from the choice given in.
(Myxodema/simple goitre/exophthalmic goitre) is a disorder caused by excess thyroid hormone.
Answer : Exophthalmic goitre is a disorder which is caused by excess production of thyroid hormone.
Biology Questions and Answers ICSE Class 10 :
Cell Cycle and Cell Division | Genetics | Absorption by Roots| Transpiration | Photosynthesis | Circulatory System | Excretory System | Nervous System | Endocrine System | Reproductive System | Population and Its Control | AIDS to Health and Health Organisation | Pollution