Model Question Paper - 1 unsolved XI BIOLOGY (Theory)

Time: 3 Hrs.]

[M.M : 70]

General Instruction :

1. All questions are compulsory.

1. The questions paper consist of four section A, B, C and D. Section 'A' Contain 8 quetions of 1 mark each. Section 'B' is of 10 questions of 2 marks each. Section 'C' has 9 questions of 3 marks each. Section 'D' is of 3 question of 5 marks each.

1. There is no overall choice. However, and internal choice has been provided in one question of 2 marks. One question of 3 marks and all the three questions of 5 marks.
2. Wherever necessary, the diagram draw should be neat and properly labelled.

Section 'A'

1. What is function of mucus present is grastric juice?
2. In which stage of interphase the amount of DNA doubles per cell.
3. Name the polysaccharide which constitutes the exoskeleton of arthropods.
4. Why do lichen generally grow at high altitude?
5. Select the uricotelic from the following mammals, birds. Cockroach, reptiles.
6. Which is the lowest category in taxomomic categories.
7. Write the floral formula of family Liliaceae.
8. Difine sarcomere.

Section 'B'

1. Write any two differences between a prokaryotic cell and a eukaryotic cell.

161

Illustrate a glycosidic and phosphodiester bond.

State the importance of air bladder in pisces.

1. Bile juice contain no digestive enzyme, yet it is important for digestion. Why?

Explain the role played by protein pumps during active transport is plants.

State the functions of PCT in our body.

1. How are exarch and endarch conditions differ anatomically in stem and root?

16 What is the importance of F_o-F₁ particles in ATP synthesis during aerobic respiration?

1. Define the following: (i) Tidal volume (ii) Inspiratory capicity

OR

Where is Carbonic anhydrase is found? Write its function.

1. In the given table, showing the name of some hormone and their function. Fill in the blank A to D

Hormone Function Prolactin Α В. Stimulates Contraction of muscle

of uterus during parturition

Thymus C <math>\mathbf{D}</math> regulate female sexual behaviour

Section 'C'

Give the account of total ATP production in aerobic respiration.

1. (a) How does abscisic acid acts antagonistically to auxin and Gibberellin. ?
2. Name the growth regulator used for each of the following.
3. ripening of fruits
4. Induce parthenocarpy

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