Old Question Paper 2065 – Biology Class 11 | Science

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Sunflower BotanyOld is Gold | Biology
Old Question Paper of Biology
For: Science (Zoology + Botany)
Grade: XI | Year: 2065 (2008)
Subject Code: 114 ‘D’

Time:- 3 hrs. Full Marks:- 75 | Pass Mark: 27
Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Group ‘A’ – Zoology
Attempt all the questions.

1. Answer in short: 7×1=7
a) What is morphology?
b) What is the role of tympanic membrane?
c) Give two characters of Insecta.
d) Why blood becomes red in higher organism?
e) What is flangella?
f) What do you mean by hibernation?
g) Give the scientific name of tiger and leopard.

2. Describe in short: 5×3=15
a) Miller-Urey’s experiment.
b) Lamarck’s theory of use and disuse of organs.
c) Evolution of Cromagnon to modern man.
d) Biochemical evidences of evolution.
e) Characteristic features of class aves.

3. What are the major causes of air pollution? Discuss its impact on life and suggest appropriate control measures. 7.5
4. Describe in detail the process of feeding and digestion in earthworm. 8
Describe the internal structure of heart of Frog and explain its working mechanism.

Group ‘B’ – Botany
Attempt all questions:

1. Answer in short (any seven): 7×1=7
a. Define a grazing food chain.
b. What is rhizome?
c. What is the function of mitochondria?
d. Mention the abiotic components of ecosystem.
e. What is the function of gemma cup?
f. What are the major chemical constituents of protoplasm?
g. Write the botanical name of potato and tomato.
h. Define chemotaxis.
i. What is inflorescence?
j. Define cellular pool.

2. Describe in short: 5×3=15
a. Golgi apparatus
b. Different types of ribosomes
c. Significance of mitosis
d. N2 cycle in nature
e. Benefits of afforestation

3. Describe the life cycle of Marchantia showing alternation of generation. 7.5
4. Define ecosystem. Discuss in detail about the pond ecosystem. 8
Describe the family papilionaceae with necessary digrams and give two examples of economic value of this family.

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