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Name of the board : Jharkhand Academic Council
Subject  : Class XII Botany
Website : jac.nic.in/model_questions.htm
Document type : Model Question Paper

Botany Set-I : https://www.pdfquestion.in/uploads/39-Botany%20Set%20-II.pdf
Botany Set-II : https://www.pdfquestion.in/uploads/39-Botany%20Set-I.pdf
Botany Set-III : https://www.pdfquestion.in/uploads/39-Botany%20Set-III.pdf

JAC Class XII Botany Model Question Paper

Total Marks 35
Time 1½ hrs
Total number of questions – 18

Related : Jharkhand Academic Council Class XII +2/ 12th Std/ Plus Two Chemistry Model Question Paper : www.pdfquestion.in/25.html

General Instructions

All questions are compulsory. Candidates are required to give their answers in their
own words, as far as practicable.
Q.No. 1 to 10 multiple choice/objective type questions, each of 1 Mark.
Q.No. 11 to 13 are very short answer type questions, each of 2 Marks.
Q.No. 14 to 16 are short answer type questions, each of 3 Marks.
Q.No. 17 to 18 are long answer type questions, each of 5 Marks.
Marks distribution for different parts of a question are shown in the margin

Set – I

GROUP – A
1. A flower consisting of both the androecium and gynoecium is called:
(a) Incomplete (b) Complete (c) Perfect (d) Monochlamydae

2. Which part of the flower is the source of ‘saffron’/ kesar of zafran is obtaind?
(a) Style (b) Stigma (c) Petals (d) Pedicel

3. A DNA molecule consisting of both strands radio labeled with 15N is allowed to replicate for there generation in normal nitrogen, how many of the daughter molecule will be radio active?
(a) One (b) Two (c) Four (d) Eight

4. In human the inheritance of which of the following characters is both an example of co-dominance and multiple alleles?
(a) Color blindness (b) Hemophilia (c) A, B and O blood Group (d) Cystic fibrosis

5. The mole percentage of adenine in a double stranded DNA was 30 percent,what will the mole percentage of cytosine in the molecule?
(a) 10 (b20 (c) 30 (d) 60

6. The chief source of fuel in the biogas is:
(a) Carbon monoxide (b) Methane (c) Butane (d) CNG(Compressed Natural Gas)

7. Crop rotation can be supported by which group crop plantation?
(a) Rice and wheat (b) Oil seed (c) Pulses (d) Sugar cane

8. Mutation theory of Hugo de Vries was based on the plant:
(a) Oenothera (b) Finches (c) Althea rosea (d) Garden pea

9. Which of the following is not an air pollutant?
(a) CO2 (b) CO (c) CFC (Chlorofluoro carbon) (d) Aerosol

10. The bacterium present in the food that causes food poisoning called botulism is:
(a) Clostridium tetani (b) Clostridium botulinum (c) Agrobacterium tumefaciens (d) Agrobacterium rhizogenes

GROUP – B :
(VERY SHORT ANSWER TYPE QUESTION CARRYING 2 MARKS EACH)
11. What are the products of the ovary and ovule after fertilization?
12. The result of fertilization is (a) __________________ and double fertilization is (b) __________.
13. Expand SCP ___________ the source is ______________________.

GROUP – C
(SHORT ANSWER TYPE QUESTION CARRYING 2 MARKS EACH)
14. What is the number of sets of chromosomes and name the three types of endosperms.

15. Match the figure 1, 2 and 3 with a, b and c:
1. Aril (a) Wheat
2. Thalamus (b) Litchi
3. Bifid feathery stigma (c) Pome
16. Which is the source of the wheat variety ‘Sarbati Sonora’? Who developed this varity?

GROUP – D
05×02=10
Short Answer Type Question Carrying 2 Marks Each
17. Differentiate between male gametophyte and female gametophyte.
18 Match the fruits in figure 1, 2, 3, 4 and 5 with the edible parts in options a, b, c, d and e:
Fruits Edible Part
1. Cashew nut a. Mesocarp
2. Coconut b. Aril
3. Ground nut c. Endosperm
4. Litchi d. Cotyledons
5. Mango e. Seed

Set – II

GROUP – A 1 X 10 = 10
1. Wind pollution is common in :
(a) Orchids
(b) Legumes
(c) Lilies
(d) Grasses

2. The edible part of the coconut is :
(a) Epicarp
(b) Mesocarp
(c) Endocarp
(d) Endosperm

3. The process of synthesis of messenger RNA on the DNA template is called :
(a) Replication
(b) Transcription
(c) Translation
(d) Reverse transcription

4. The embryo sac of a typical dicotyledonous plant at the time of fertilization is :
(a) 8-Cells
(b) 7-Cells
(c) 6-Cells
(d) 5-Cells

5. Insect pollinated flowers are referred as :
(a) Entomophily
(b) Ornithophily
(c) Anemophily (d) Hydrophily

6. The Okazaki fragments on the lag are joined together by the enzyme :
(a) DNA primase
(b) DNA polymerase
(c) DNA ligase (d) Helicase

7. How many meiotic division will result in the formation of 100 seeds ?
(a) 125 (b) 100
(c) 200 (d) 150

8. The toxic protein produced by the Baccilus thurengensis is :
(a) Cry-protein
(b) Auxins
(c) Leg haemoglobin
(d) Opines

9. Highest per capita fossil energy consumption is of which country ?
(a) India
(b) China
(c) America
(d) Japan

10. Conservation of flora and fauna in its natural habitat is :
(a) In situ conservation
‘(b) Ex-situ conservation
(c) In vivo conservation
(d) In vitro conservation