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Class 12 Biology Objective In English Chapter – 9 Strategies for Enhancement in Food Reproduction
1. Pisciculture is related culture of
( A ) Aquatic plants
( B ) Aquatic animals
( C ) Silk worm
( D ) Lac worm
Ans-( B )
2. Taichung is a variety of
( A ) Rice
( B ) Wheat
( C ) Maize
( D ) Sugarcane
Ans-( A )
3. An infertile plant hybrid can be madefertile by :
( A ) colchicine treatment
( B ) polyploidy
( C ) ganoson treatment
( D) all correct
Ans-( D )
4. The inbreeding between closelyrelated organisms :
( A ) reduces variations
( B ) increases variations
( C ) reduces dominance
( D ) none
Ans-( A )
5. Somaclonal variations are :
( A ) Variations produced in tissue culture
( B ) Variations produced during sexual reproduction
( C ) Variations caused by mutagens
( D )Variations caused by gamma rays.
Ans-( A )
6. In Maize, hybrid vigour is obtainedby :
( A ) Inducing mutations
( B ) Crossing two inbreed lines
( C ) Bombarding seeds with DNA
( D ) Harvesting seeds from most productive plants
Ans-( B )
7. Which of the following nematodesinfect the root of tobacco plants?
( A ) Bacillus thuringiensis
( B ) Cry IAC
( C ) Meloidogyne incognita
( D ) Both A & B
Ans-( C )
8. ‘Sona Lika’ and ‘Kalyan Sona’ arehigh yielding disease resistant variety of
( A ) Rice
( B ) Wheat
( C ) Maize
( D ) Cotton
Ans-( B )
9. The toxic protein secreted by Bacillusthuringiensis is
( A ) Tubulin
( B ) Insulin
( C ) Cry Protein
( D ) All of these
Ans-( C )
10. Green revolution is mainly concernedwith :
( A ) Maize
( B ) Sugarcane
( C ) Fish
( D ) Wheat
Ans-( D )
11. Maize is generally rich in :
( A ) Thiamine
( B ) Lysine
( C ) Methionine
( D ) Cysteine
Ans-( D )
12. Which one is the example of Petroleum plants in the following:
( A ) Euphorbia
( B ) Jatropha
( C ) Hevea & Calotropis
( D ) All
Ans-( D )
13. White rust of wheat is caused by
( A ) Puccinia
( B ) Albugo
( C ) Ustilage
( D ) Cystopus
Ans-( A )
14. Which of the following is an exampleof a cross-breed?
( A ) Mule
( B ) Hilsa
( C ) Hisardale
( D ) Sahiwal
Ans-( C )
15. Jaya and Ratna are varieties of
( A ) Wheat
( B ) rice
( C ) mustard
( D ) pea
Ans-( B )
16. MOET is related to :
( A ) transfer of super embryo
( B ) transfer of super eggs
( C ) super ovulation and embryo transfer
( D ) None
Ans-( C )
17. A plant cell without cell wall is called
( A ) proplast
( B ) protoplast
( C ) nucleoplasm
( D ) explant
Ans-( B )
18. A fungal disease of Poultry is
( A ) coccidiosis
( B ) coryza
( C ) aspergillosis
( D) Mark’s disease
Ans-( C )
19. Ranikhet disease in Poultry is a
( A ) Viral disease
( B ) Bacterial disease
( C ) Fungal disease
( D ) none
Ans-( A )
20. Which in the following is an improvedvariety of chicken ?
( A )Jersey
( B ) Leghorn
( C ) Himgiri
( D ) Kalyansona
Ans-( B )
21. Which disease is found in hen ?
( A ) Smut
( B ) Cholera
( C ) Both A & B
( D ) Ranikhet
Ans-( D )
22. Norman Borlaug is associated with:
( A ) White revolution
( B ) Green revolution
( C ) Blue revolution
( D ) Yellow revolution
Ans-( B )
23. In callus culture, rooting can be induced by :
( A ) Gibberellin
( B ) Cytokinin
( C ) Auxin
( D ) Ethylene
Ans-( C )
24. Borlaug developed new varieties of:
( A ) Wheat
( B ) Rice
( C ) Sugarcane
( D ) Mango
Ans-( A )
25. Virus free plants can be obtainedby :
( A ) Embryo rescue
( B ) Meristem culture
( C ) Protoplast culture
( D ) Anther culture
Ans-( B )
26. Coccidiosis in poultry is caused by:
( A ) Protozoan parasites
( B )Nematode parasites
( C ) Viruses
( D ) Tapeworms
Ans-( A )
27. Which of the following is a freshwater
food fish ?
( A ) Harpodon
( B ) Cichina mrigala
( C ) Anguilla
( D ) Hilsa
Ans-( B )
28. Which species of honey bee in commonly domesticated and cultured?
( A ) Apis indica
( B ) Apis millipera
( C ) Apis dorsata
( D ) Apis florea
Ans-( A )
29. Workers of Honey bee are :
( A ) Fertile male
( B ) Sterile male
( C ) Fertile female
( D ) Sterile female
Ans-( D )
30. Honey is made by
( A ) male honey bee
( B ) queen honey bee
( C ) worker honey bee
( D ) Both (A) & (B)
Ans-( C )
