Give 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.
At higher temperatures, green plants start evolving CO2 instead of O2 due to photorespiration, where RubisCO functions as RuBP oxygenase. The photosynthetically fixed carbon is lost by photorespiration
State the best known contribution of:
(i) Alec Jeffery
(ii) P.K. Sethi
(iii) Hugo de Vries
(a) Name and define the three types of natural selection.
(b) State the following:
(i) Hardy Weinberg’s principle
(ii) Theory of recapitulation