Short Answer TypeGive reasons for the following:
Nitrogenous fertilisers are not applied in fields where leguminous crops grow.
Give reasons for the following:
At higher temperatures, green plants start evolving CO2 instead of O2.
State the best known contribution of:
(i) Alec Jeffery
(ii) P.K. Sethi
(iii) Hugo de Vries
(b) Define the following:
(i) Frame shift mutations.
(ii) Genetic drift.
(i) Frameshift mutations: Shifting of entire reading frame/caused either by addition or deletion of one or more nucleotide pairs in a molecule of DNA segment at one or more places OR diagrammatic representation
(ii) Genetic drift: The sudden and random changes in the allele frequency or gene frequency occurring in small population by chance alone.
Long Answer Type(a) Name and define the three types of natural selection.
(b) State the following:
(i) Hardy Weinberg’s principle
(ii) Theory of recapitulation
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