Previous Year Paper year:2011 : ICSE-X-Biology

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ICSE-X-Biology

Previous Year Paper year:2011

with Solutions - page 2

#1-c [5]
Copy and complete the following by filling in the blanks 1 to 5 with appropriate
words/terms/phrases:
To test the leaf for starch, it is boiled in water to .... (1). It is next boiled in
methylated spirit to .... (2). The leaf is placed in warm water to soften it. It is then
placed in a dish and ..... (3) solution is added. The region which contains starch turns
...... (4), and the region which does not contain starch turns ...... (5).
Ans : (1) kill the cells, (2) remove chlorophyll, (3) iodine, (4) blue black, (5) brown.

#1-d [5]
Give the exact location of the following:

#1-d-i
Amnion
Ans : On the margins of leaves of some plants.

#1-d-ii
Pituitary gland
Ans : In the endolymph present in the middle dual of cochlea.

#1-d-iii
Mitral valve
Ans : Between left amide and left ventricle

#1-d-iv
Organ of Corti
Ans : At the base of midbrain.

#1-d-v
Hydathodes
Ans : Around the embryo in the uterus.

#1-e [5]
State whether the following statements are true or false. If false, rewrite the correct
form of the statement by changing the first or last word only:

#1-e-i
Penicillin obtained from Penicillium notatum is an antibody.
Ans : False; Nucleus is a part of the cell in which chromosomes are present.

#1-e-ii
Gestation is the process of fixing of the zygote to the uterine wall.
Ans : False; Ureter carries urme from kidney to the urinary bladder.

#1-e-iii
Centromere is an organelle of the cell to initiate cell division.
Ans : False; Centrosome is the organelle of the cell that initiates cell division.

#1-e-iv
Urethra carries urine from the kidney to the urinary bladder.
Ans : False; Implantation is the process of fixing of the zygote to the uterus wall.

#1-e-v
Lysosome is a part of the cell in which chromosomes are present.
Ans : False; Pencillm obtained from Pencillium notatum is an antibiotic.

#1-f [5]
Rewrite and complete the following sentences by inserting the correct word in the
space indicated:

#1-f-i
... is the phenomenon of contraction of the cytoplasm from the cell wall.
Ans : Salk's vaccine is given to build up immunity against polio.