Previous Year Paper year:2009 : ICSE-X-Biology

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ICSE-X-Biology

Previous Year Paper year:2009

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ICSE Board
Class X Biology
Board Paper 2009
(One hour and a half)
General Instructions: Total Marks: 80
1. Answers to this paper must be written on the paper provided separately.
2. You will not be allowed to write during the first 15 minutes.
This time is to be spent in reading the question paper.
3. The time given at the head of the paper is the time allotted for writing the answers.
4. Attempt all questions from Section I and any four questions from Section II.
5. The intended marks of questions or parts of questions are given in brackets [ ].

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Section : I
Attempt all questions from this section.

#1

#1-a [5]
Name the following:

#1-a-i
The statistical study of the human population of a region.
Ans : Demography

#1-a-ii
The biological term given to the protective membranes of the brain.
Ans : Meninges

#1-a-iii
The photosensitive pigment present in the rod cells of the retina.
Ans : Rhodopsin

#1-a-iv
The cell organelle responsible for photosynthesis.
Ans : Chloroplast

#1-a-v
The internal layer of the eye which prevents the reflection of light.
Ans : Choroid

#1-b [5]
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.

#1-b-i
The resting stage in mitosis is called interphase.
Ans : True.

#1-b-ii
Photosynthesis occurs in all the cells of the plant.
Ans : False, .Respiration occurs in all the cells of the plant.

#1-b-iii
The pituitary gland is both exocrine and endocrine in function.
Ans : False, .The pancreas gland is both exocrine and endocrine in function'.

#1-b-iv
Chemicals applied to spots and places to kill harmful microorganisms are called
disinfectants.
Ans : True.

#1-b-v
All voluntary actions are controlled by the cerebellum.
Ans : True.