Previous Year Paper year:2017 : ICSE-X-Biology

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ICSE-X-Biology

Previous Year Paper year:2017

with Solutions - page 3

#1-e-iii
ACTH, TSH, ADH, FSH
Ans : ADH
(Extra info: TSH, ACTH and FSH are secreted by the anterior pituitary gland.)

#1-e-iv
Phosphate, RNA, Sugar, Nitrogenous base
Ans : RNA
(Extra info: Phosphate, sugar and nitrogenous base form a molecule of nucleotide.)

#1-e-v
Bile, Urea, Uric acid, Ammonia
Ans : Bile
(Extra info: Urea, uric acid and ammonia are nitrogenous waste substances.)

#1-f [5]
Given below are groups of terms. In each group the first pair indicates the
relationship between the two terms. Rewrite and complete the second pair on
a similar basis.
Example : Oxygen : Inspiration : : Carbon dioxide : Expiration

#1-f-i
Eye : Optic nerve : : Ear : ___________
Ans : Eye : Optic nerve : : Ear : Auditory nerve

#1-f-ii
Cytoplasm : Cytokinesis : : Nucleus : __________
Ans : Cytoplasm : Cytokinesis : : Nucleus : Karyokinesis

#1-f-iii
TT : Homozygous : : Tt : ____________
Ans : TT : Homozygous : : Tt : Heterozygous

#1-f-iv
Foetus : Amnion : : Heart ____________
Ans : Foetus : Amnion : : Heart : Pericardium

#1-f-v
Adenine : Thymine : : Cytosine : _____________
Ans : Adenine : Thymine : : Cytosine : Guanine

#1-g

Match the items given in Column A with the most appropriate ones in Column
B and rewrite the correct matching pairs.

Column A	Column B
1. Sacculus	- dynamic body balance
2. Birth rate	- Hyperglycemia
3. DNA and histomes	- Hypoglycemia
4. Euro norms	- Natality
5. Diabetes mellitus	– static body balance
	– vehicular standards
	- nucleosome

Ans :

#	Column A	Column B
1.	Sacculus	Static body balance
2.	Birth rate	Natality
3.	DNA and histones	Nuclesome
4.	Euro norms	Vehicular standards
5.	Diabetes mellitus	Hyperglycemia

#1-h [5]
The diagram given below represents the location and structure of an
endocrine gland. Study the same and answer the questions that follow:

#1-i
Name the endocrine gland shown in the diagram.
Ans : Thyroid gland

#1-ii
Name the secretion of the gland which regulates basal metabolism.
Ans : Thyroxine regulates the basal metabolism.

#1-iii
Name the mineral element required for the synthesis of the above
mentioned hormone.
Ans : Iodine is required for the synthesis of thyroxine.

#1-iv
Name the disease caused due to undersecretion of the above mentioned
hormone in children.
Ans : Cretinism