Subject

Biology

Class

ICSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
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 Multiple Choice QuestionsShort Answer Type

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21.

Answer the following :

What is the cause of sickle-celled anaemia?


Gene mutation is the cause of sickle-celled anaemia. Sickle cell disease is caused by a mutation in the hemoglobin-Beta gene found on chromosome 11 at the 6th position where the amino acid Glutamine is replaced by Valine 
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22.

Answer the following :

Why does blood not clot in blood vessels?

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23.

Elaborate the following :

G-6PD

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24.

Elaborate the following :

CT-Scan

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25.

Elaborate the following : 

VAM 

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26.

Elaborate the following :

ADH

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27.

Elaborate the following :

DPD

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28. Give four differences between Meristematic and Permanent tissues. 
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29. Enlist four physiological effects of gibberellins.
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30.

Define the following :

Water Potential   

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