Explain briefly Pollinium from Class 12 ISC Previous Year Board

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

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 Multiple Choice QuestionsShort Answer Type

11.

Mention one significant difference between each of the following :

Morula and Blastula

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12.

Answer the following

What is pulvinus?

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13.

Explain briefly

Photolysis
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14.

Explain briefly

Pollinium


Pollinium is agglutinated mass of pollen grains that is transported as a single unit, e.g. orchids.

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15.

Explain briefly

Vivipary 
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16.

Explain briefly

Micturition

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17.

Explain briefly

Sarcomere

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18.

State the contribution of the following scientists :

(i) Robert Koch

(ii) Edward Jenner

(iii) Hansen

(iv) John Otto

(v) Funk

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19.

Elaborate the following

(i) ABA    

(ii) CNS

(iii) EEG    

(iv) AIDS

(v) ERV

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 Multiple Choice QuestionsLong Answer Type

20.

(a) Give the anatomical (internal structure) differences between a dicot stem and a monocot stem.

(b) Give an account of the different types of soil water.

(c) State the importance (one point) and one deficiency symptom of the following in our body.

(i) Folic acid   

(ii) Phosphorus

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