CBSE Guess > Papers > Question Papers > Class XII > 2006 > Biology > Outside Delhi Set -III

BIOLOGY— 2006 (Set III—Outside Delhi)

General Instructions: Same as in Set-I (Outside Delhi) 2006.

Note: Except for the following questions all the remaining questions have been asked in Set-I & Set-Il.

SECTION - B

Q. 6. Name the gland that functions as a biological clock in our body. Where is this gland located? Name its one secretion. (2)

Q. 7. Where are auxins generally produced in a plant? Name any one naturally occurring plant auxins and any one synthetic auxin. (2)

Q. 12. In what form do plants absorb magnesium from the soil? List any two magnesium deficiency symptoms in the leaves. (2)

SECTION - C

Q. 18. Briefly explain the principle and the function of haemodialysis (3)

Q. 22. Define ageing. Explain programmed senescence theory with reference to apopiosis (3)

Q. 23. What is in traspecific incompatibility or self-sterility in plants” Differentiate between sporophytic incompatibility and gametophytic incompatibility (3)

SECTION - D

Q. 28. What is meant by stoma? Name the group of plants, which contains fewer stomata on the upper surface of leaves. How does the absorption and loss of potassium ions in the guard cells bring about the opening and closure of the stomata? Explain. (5)

Or

Describe the basic characteristics of a photosystem and explain how photosystem I differs from photosystem U. (5)

Biology 2006 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

CBSE 2006 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