Class 12 Biology MCQs Chapter – 9
21. Which one is the example of Petroleum plants in the following:
( A ) Euphorbia
( B ) Jatropha
( C ) Hevea & Calotropis
( D ) All
Answer-( D )
22. White rust of wheat is caused by
( A ) Puccinia
( B ) Albugo
( C ) Ustilage
( D ) Cystopus
Answer-( A )
23. Which of the following is an example of a cross-breed?
( A ) Mule
( B ) Hilsa
( C ) Hisardale
( D ) Sahiwal
Answer-( C )
24. Jaya and Ratna are varieties of
( A ) Wheat
( B ) rice
( C ) mustard
( D ) pea
Answer-( B )
25. MOET is related to :
( A ) transfer of super embryo
( B ) transfer of super eggs
( C ) super ovulation and embryo transfer
( D ) None
Answer-( C )
26. A plant cell without cell wall is called
( A ) proplast
( B ) protoplast
( C ) nucleoplasm
( D ) explant
Answer-( B )
27. A fungal disease of Poultry is
( A ) coccidiosis
( B ) coryza
( C ) aspergillosis
( D) Mark’s disease
Answer-( C )
28. Ranikhet disease in Poultry is a
( A ) Viral disease
( B ) Bacterial disease
( C ) Fungal disease
( D ) none
Answer-( A )
29. ‘Sona Lika’ and ‘Kalyan Sona’ are high yielding disease resistant variety of
( A ) Rice
( B ) Wheat
( C ) Maize
( D ) Cotton
Answer-( B )
30. In callus culture, rooting can be induced by :
( A ) Gibberellin
( B ) Cytokinin
( C ) Auxin
( D ) Ethylene
Answer-( C )
