Board Paper of Class 12-Science 2005 Biology Delhi(SET 1) - Solutions
General Instructions:
(i) All questions are compulsory.
(ii) This question paper consists of four sections A, B, C and D.
Section A contains 5 questions of one mark each.
Section B is of 10 questions of two marks each.
Section C is of 10 questions of three marks each and
Section D is of 3 questions of five marks each.
(iii) There is no overall choice. However, an internal choice has been provided.
(iv) Wherever necessary, the diagrams drawn should be neat and properly labelled.
(i) All questions are compulsory.
(ii) This question paper consists of four sections A, B, C and D.
Section A contains 5 questions of one mark each.
Section B is of 10 questions of two marks each.
Section C is of 10 questions of three marks each and
Section D is of 3 questions of five marks each.
(iii) There is no overall choice. However, an internal choice has been provided.
(iv) Wherever necessary, the diagrams drawn should be neat and properly labelled.
- Question 1
What would happen to the rate of photosynthesis in C3 plants if the CO2 concentration level almost doubles from its present level in the atmosphere?
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- Question 2
In humans, starch digestion begins in the buccal cavity but stops in the stomach. Why?
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- Question 3
Name the two most biodiversity-rich zones of India.
VIEW SOLUTION
- Question 4
Name the hormone that makes plants more tolerant to various stresses.
VIEW SOLUTION
- Question 5
Name the two major groups of cells required in attaining specific immunity.
VIEW SOLUTION
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