Old Question Paper 2070 – Biology | Science Class 12

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Biology - Owl BirdQuestion Paper of Biology – Old is Gold
For: Science Class 12
Year: 2070 (2013) – Botany + Zoology
Subject Code: 214 ‘D’

Note: This question paper contains Botany portion in Group ‘A’ and Zoology portion in Group ‘B’. So use separate answer sheet for Group ‘A’ and Group ‘B’. First use answer sheet for Group ‘A’. Candidates are required to give their answer in their own words as far as practicable. The figures in the margin indicate full marks.
Time: 3 hrs | Full marks: 75 | Pass Marks: 27

Group ‘A’ – Botany

Attempt all the questions.

1. Answer any seven questions in very short. [7 X 1 = 7]

a) What is sclereids?
b) Define ascent of sap.
c) Mention two plant hormones.
d) What does it mean by homozyous?
e) What do you mean by recessive?
f) Define sexual reproduction.
g) Elaborate about female gametophyte.
h) Point out about anemophily.
i) Significance of green manure.
j) Mention about genetic engineering.

2. Describe in brief on any five. [5 X 3 = 15]

a) Differentiate between spongy and palisade parenchyma.
b) Process of glycolysis.
c) Types of RNA and its functions.
d) Reasons for the selection of pea plant on the Mendal’s experiment.
e) Semi-conservation method of DNA replucation.
f) Development of female gametophyte.
g) Fermentation technology and its significanses.

3. What is transpiration? Discuss the experiment in detail to demonstrate the unequal transpiration with clean diagram.
OR
Describe the T.S. of monocot stem with well labelled diagram and point out its differences with that of dicot stem. [7.5]
4. Describe the sex linked inheritance with special reference to the eye colour of Drosophila melanogaster(fruit fly). [8]

Group – B – Zoology

Attempt all questions.

1. Answer in very short on any seven. [7 X 1 = 7]

a) What is ligament?
b) Name the pigments found in bile.
c) What is the location of Adam’s apple?
d) Which hormone is useful for retaining salt in body?
e) Name two neurotransmitters.
f) Which system of body is affected by Tuberculosis?
g) What is sperm lysin?
h) Why ultra filtration is called so?
i) What is glycogenolysis?
j) What do you mean by vaccination?

2. Answer in short on any five. [5 X 3 = 15]

a) Working mechanism of human eye.
b) Ill effects of alcohol on health.
c) Differentiate between inspiration and expiration.
d) The importance of poultry farming in Nepal.
e) Natural pace maker.
f) Advantages of organ transplantation.
g) Blastula formation in frog.

3. Describe the respiration in human beings with suitable diagrams. [7.5]
OR
Write, what you know about the AIDS?
4. Discuss the physiology of digestion in human beings. [8]

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One Comment

  1. simon stha
    Posted April 25, 2017 at 12:48 pm

    Thanks a lot to merospark.com especially for the hseb questions papers .please I want to see also the old hseb qst papers of biology .

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