Old Question Paper 2066 – Biology | Science Class 11

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FrogOld is Gold | Biology
Old Question Paper of Biology
For: Science (Zoology + Botany)
Grade: XI | Year: 2066 (2009)
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 very short (any seven): 7×1=7
a) What do you understand by taxonomy?
b) How is biology inter related with other sciences?
c) Give the zoological name of (i) Jelly fish and (ii) Pigeon
d) Who proposed recaputalion theory?
e) Mention the number of valves in auriculo-ventricular aperture.
f) What is pellicle?
g) Name the boring organ of Earthworm.
h) Define adaptation.
i) Write the full form of IUCN.
j) What is taxis?

2. Describe in short (any five): 5×3=15
a) Point out the drawbacks of “Lamarckism”.
b) List the significances of conjugation in Paramecium.
c) Describe pre-erythrocytic schizogony of malarial parasites.
d) How do flatworms and round worms differ in body cavity digestive tract and excretory organs?
e) Draw a well labelled diagram of T.S. of earthworm passing through
f) Discuss the control measures of water pollution.
g) Write short notes on fish migration.

3. Write an essay on “evolution of man”. 8
4. Give an illustrated account of the excretory system of Earthworm. 7.5
OR
Describe the structure of lung of Frog. Discuss its working mechanism.

Group ‘B’ – Botany
Attempt all questions:

1. Answer in short (any seven): 7×1=7
a. Define adventitious root.
b. What do you mean by cytokinesis?
c. What do you understand by binomial nomenclature?
d. What is incipient nucleus?
e. What is sporangium?
f. Mention abiotic factors.
g. What is lichen?
h. What is food chain?
i. What do you mean by micromutrients?
j. Define aestivation.

2. Describe in short (any five): 5×3=15
a. Differentiate between saturated and unsaturated fatty acids.
b. Describe the plastids.
c. Describe the process of crossing over in meiosis.
d. Describe the structure of Yeast.
e. Describe the scalariform conjugation in Spirogyra.
f. Describe the male cone of Pinus.
g. Differentiate between prokaryotic and eukaryotic cell.

3. Describe the life cycle of Dryopteris showing alternation of generation. 7.5
OR
Describe the family Cruciferae with necessary diagrams and give two examples of economic value of this family.
4. Define ecosystem and discuss the main components of ecosystem. 8

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