121. Central dogma in molecular biology states that all genetic information flows from:
(a) RNA-protein – DNA
(b) DNA-RNA – protein
(c) DNA-protein – RNA
(d) Protein- RNA – DNA
Answer:
Explanation:
122. A typical angiosperm embryo sac at maturity is :
(a) 7 nucleate, 7 celled
(b) 7 nucleate, 8 celled
(c) 8 nucleate, 9 celled
(d) 8 nucleate, 7 celled
Answer:
Explanation:
123. Pomato is an example of:
(a) mutation breeding
(b) meristematic culture
(c) somatic hybridization
(d) all of the above
Answer:
Explanation:
124. The formation of floral primordium is preceded by :
(a) appearance of fully developed flowers on plant
(b) pollination and fertilization
(c) hormonal and structural changes leading to differentiation
(d) development of seeds within ovary
Answer:
Explanation:
125. Which floral structure best supports Goethe’s claim that “the flower is a modified shoot”?
(a) pedicel, because it bears the entire flower
(b) thalamus (receptacle), because it is a flattened modified stem with nodes and internodes
(c) Corolla, because it bears the entire flower
(d) Sepals, because they protect the bud
Answer:
Explanation:
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