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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11.

Give a brief answer for each of the following:

What is heterosis?


Heterosis or hybrid vigour is the exhibition of superiority of the hybrid offspring over both of its parents in one or more traits such as the ability to give higher yield or disease or pest resistance.

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12.

Give a brief answer for each of the following:

Why is non-cyclic photo phosphorylation considered as a non-cyclic pathway?

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13.

Give a brief answer for each of the following:

Define test cross.

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14.

Give a brief answer for each of the following:

What are introns?

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15.

Give a scientific term for each of the following:

The first formed category of photosynthetic organisms.

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16.

Give a scientific term for each of the following:

The surgical removal of a section of fallopian tube.

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17.

Expand the following abbreviations:

STD

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18.

Expand the following abbreviations:

NADP

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19.

Expand the following abbreviations:

MRI

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20.

Expand the following abbreviations:

DDT

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