CBSE Class XII HOTs Biology - Strategies For Enhancement Infood Production database with answers (Please refer to other links for answers to HOTs questions) for Class 12 of CBSE exams for CBSE Students. Based on CBSE and NCERT guidelines. The students should practice these Question Papers to gain perfection which will help him to get more marks in CBSE examination.
Q.1. Why hybrids of selected parents are self pollinated till a state of homozygosity?1
Ans.1) Inbreeding depression
Q.2. Name the parents of hisardale. 1
Ans.2) It is free of virus
Q.3. For which amino acids maize is biofortified ? 1
Ans.3) Embryo Transfer technology
Q.4. To which micro organism is Parbhani Kranti resistant and give the botanical name of it ?1
Q5. Which are the characters will you look for, to confirm that the plant given to you is a pest resistant?1
Ans.5)the best available local cultivar
Q.6. Why the breeding programme for millets is mainly focused for the development of high yielding varieties?
Q.1)Name the pest organisms for which Pusa stem- 2 & pusa stem – 3 are prepared as pest resistant recombinants 2
Ans.1)Yellow mosaic virus, Abelmoschus esculentus
Q.2)The somatic hybrid of tomato & potato is ‘pomato’ but it is not grown on commercial scale. Why? 2
Ans.2) Morphological, physiological & biochemical
3) To which products are the following related? 2
a) Green revolution
b) Blue Revolution
a.___________________ -collection of pre-existing genetic variability
B.Pure line creation -To evaluate and select parents.
c.____________________ -To combine the desired characters of different plants
d. screening the superior _________________________ combinant
e. Release and commercialization __________________________ of new cultivars
Q.5) How is outcrossing different from cross breeding? 2
Q.6) How was Parbhani kranti created? 2
Q.7) Which of the following crop plants are not matching as correct pairs? 2
a. Wheat - Himgiri
b. Brassica- Pusa Gaurav
c. Cauliflower- Pusa Shubra
d. Chilli-Pusa swarnim
Ans.7) Pusa Gaurav and Pusa swarnim are mismatching pairs.
Q.8)Complete the following table
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