NCERT Class 12 Biology General Knowledge Questions and Answers
112 Evolutionary convergence is characterised by
Answer: development of similar characteristics in different groups of organisms of different ancestry.
113 When the pollen of a flower is transferred to the stigma of another flower on the same plant, the process is known as
115 In a breeding experiment, the selected male parent is diploid and the female parent is tetraploid. What will be the ploidy level of the endosperm that will develop after double fertilisation?
117 How many microspore mother cells are required to produce 1000 microspores/pollen grains?
119 Intensely lactating mothers do not generally conceive due to the
Answer: suppression of gonadotropins.