KENDRIYA VIDYALAYA SANGATHAN [AGRA REGION] SESSION ENDING EXAMINATION 2016

SUBJECT : BIOLOGY CLASS-XI (SOLVED PAPER)

Time: 3 Hours

Max. Marks: 70

General Instructions:

There are a total of 26 questions and five sections in the question paper. All questions are compulsory.

Section A contains question numbers 1 – 5, very short answer type question of 1 mark each.

1. Section B contains question numbers 6 – 9, short answer type I questions of 2 marks each.

Section C contains question numbers 10-20, short answer type II question of 3 marks each.

Question numbers 21 is a value based questions, of 4 marks.

1. Section D contains question numbers question 22 & 23, of 5 mark each.
2. Question 24, 25 & 26 in section E is based on OTBA of 10 marks.

1. There is no overall choice. However, an internal choice has been provided in one question of two marks, in one question of 3 marks and in all the three questions of 5 marks. An examinee is to attempt only one of the choices in such questions.

SECTION - A

What is metamerism?

1. What type of Phyllotaxy is seen in Alstonia and Guava?

What is G₀-phase ? How many molecules of ATP and how many molecules of NADPH+H⁺ are spent to fix three molecules of CO₂?1

1. What happen when the secretion of hormone ADH is inhibited?

SECTION - B

1. Why is ATP called as the coin of the energy? 2
2. Write two differences between anaerobic respiration and fermentation. 2
3. Name two leucocytes which are phagocytic. 2
4. Bile does not contain any digestive enzymes, yet it is essential for digestion. Why? 2

OR Salivary amylase and pancreatic amylase both work on starch but still both are different to each other. Write two differences between them?

SECTION - C

Differentiate between green algae, brown algae and red algae in respect of pigments and reserve food material.

1. (a) How important is the presence of air bladder in Class Osteichthyes? 3
2. Expand ICZN.
3. Describe the corolla of family Fabaceae? 3
4. Name the connective tissue that lacks fibre in its matrix.
5. Write two differences between male and female cockroach. 3
6. (a) What is periderm? How does periderm formation take place in dicot?
7. How are vascular bundles arranged in monocot root? 3
8. Describe the primary, secondary and tertiary structure of protein? 3
9. Name and write the function of different kinds of leucoplast in plant cell. 3
10. State the effect of chemicals on enzyme action with suitable example. 3
11. What is oxidative decarboxylation? What is its significance for Kreb's cycle? 3
12. Write one function of sulphur, potassium and iron? 3
13. What are the components of limbic system? What is its function? 3

OR

How nerve impulses are conducted in non-myelinated nerves?

1. Muscles are the specialized tissue of mesodermal origin and show specific features responsible for movement. The muscles are of three types, based on their location, appearance and nature of regulation of their activities.
2. Name the three types of muscles based on their location.
3. Why are visceral muscles called as smooth muscles as well as involuntary muscles?

4

1. What value is imparted to you by the muscle functioning?

SECTION - D

1. What is cell cycle? Describe the phases of cell cycle with suitable diagram. 5

OR Describe prophase-I in detail with diagrams.

1. (a) Explain the process of nitrogen fixation in leguminous plant. Where does this process occur in plant? 5
2. All minerals cannot be absorbed by passive method of absorption. Why?

OR Explain the photochemical phase of photosynthesis. What is the light reaction product?

SECTION - E (OTBA)

1. In which respect human brain differ from small intestine which is considered as second brain. Write two point

differences? 3

1. What is Probiotics? What is its role in maintaining health? 2
2. Name two chemicals which produce PAN. Write the full form of PAN. Write three methods to reduce air pollution. 5