Board Paper of Class 12-Science 2018 Biology Delhi(SET 3) - Solutions
General Instructions :
(i) There are a total of 26 questions and five sections in the question paper, All questions are compulsory.
(ii) Section A contains question number 1 to 5, Very Short Answer type questions of one mark each.
(iii) Section B contains question number 6 to 10, Short Answer type I questions of two marks each.
(iv) Section C contains question number 11 to 22, Short Answer type II questions of three marks each.
(v) Section D contains question number 23, Value Based Question of four marks.
(vi) Section E contains question number 24 to 26, Long Answer type questions of five marks each.
(vii) There is no overall choice in the question paper, however, an internal choice is provided in one question of two marks, one question of three marks and all three questions of five marks. An examinee is to attempt any one of the questions out of the two given in the question paper with the same question number.
(i) There are a total of 26 questions and five sections in the question paper, All questions are compulsory.
(ii) Section A contains question number 1 to 5, Very Short Answer type questions of one mark each.
(iii) Section B contains question number 6 to 10, Short Answer type I questions of two marks each.
(iv) Section C contains question number 11 to 22, Short Answer type II questions of three marks each.
(v) Section D contains question number 23, Value Based Question of four marks.
(vi) Section E contains question number 24 to 26, Long Answer type questions of five marks each.
(vii) There is no overall choice in the question paper, however, an internal choice is provided in one question of two marks, one question of three marks and all three questions of five marks. An examinee is to attempt any one of the questions out of the two given in the question paper with the same question number.
- Question 1
How do cytokine barriers provide innate immunity in humans? VIEW SOLUTION
- Question 2
Write the dual purpose served by Deoxyribonucleoside triphosphates in polymerisation. VIEW SOLUTION
- Question 3
Write the names of the following:
(a) A 15 mya primate that was ape-like
(b) A 2 mya primate that lived in East African grasslands VIEW SOLUTION
- Question 4
Mention the chemical change that proinsulin undergoes, to be able to act as mature insulin. VIEW SOLUTION
- Question 5
Name two diseases whose spread can be controlled by the eradication of Aedes mosquitoes. VIEW SOLUTION
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