CBSE Guess > Papers > Question Papers > Class XII > 2003 > Biology > Outside Delhi Set -II

BIOLOGY— 2003 (Set II—Outside Delhi)

Q. Nos. 1-8 are of very short answer type carrying 1 mark each. Of these the first five questions are of multiple choke which have to be answered simply as A, B, C or D. The remaining questions have to be answered in approximately 1-20 words each.

Q. 1. Which one of the following is homologous to the wing of a bat? 1
(a) Tail of a kangaroo
(b) Wing of a butterfly
(c) Tail fin of a fish
(d) Arm of a human
Ans. (d)

Q. 3. Which of the following is an example of codominance? 1
(a) Pink flowers of snapdragon
(b) The ABO blood groups in humans
(c) Sex-linkage in humans
(d) Skin pigmentation in humans
Ans. (a)

Q. 4. What is the substrate of salivary amylase? 1
(a) Protein
(b) Starch
(c) Glucose
(d) Maltose
Ans. (b)

SECTION - B

Q. Nos. 9-18 are of short answer type carrying 2 marks each. Answer them in 29-30 words each.

Q. 9. What category of pathogens causes poliomyelitis? Mention the specific site of damage in the body, caused by this pathogen. How can this disease be prevented? 2

Q. 10. What happens to the walls of distal convoluted tuble (DCT) of a nephron when vasopressin is released by pituitary into the bloodstream? 2

Q. 18. How is fat digested in the humans? 2

SECTION - C

Q. Nos. 19-27are of short answer type carrying 3 marks each. Only one of these’ questions (Q. 27) based on & skill has internal choice. Answer the rest in approximately 30-50 words each.

Q. 19. What are the two striking observations that can be made in the comparative study of the early embryonic stages of the different classes of vertebrates? How does this study support the theory of organic evolution? 3

Q. 20. Name and describe a technique by which genetic disorder in the developing foetus can be detected.3

Biology 2003 Question Papers Class XII
Delhi		Outside Delhi		Compartment Delhi		Compartment Outside Delhi
	Set I		Set I		Set I		Set I
	Set II		Set II		Set II		Set II
	Set III		Set III		Set III		Set III

CBSE 2003 Question Papers Class XII
	English		Sociology
	Functional English		Psychology
	Mathematics		Philosopy
	Physics		Computer Science
	Chemistry		Entrepreneurship
	Biology		Informatics Practices
	Geography		Multimedia & Web Technology
	Economics		Biotechnology
	Business Studies		Physical Education
	Accountancy		Fine Arts
	Political Science		History
	Agriculture