Identify the correct statement about the respiratory pigment: MCQ with Answer and Explanation

Explanation:
Bt cotton is genetically modified by inserting the cry gene from Bacillus thuringiensis, which produces an insecticidal protein toxic to bollworms. Triticale is a hybrid of wheat and rye (not GM per se), Brassica napus is rapeseed (canola) which may have GM varieties, but Bt cotton is a classic example. GM crops include Bt brinjal, herbicide-tolerant soybeans.

Explanation:
Charles Darwin, in 'On the Origin of Species' (1859), proposed natural selection as the mechanism for evolution, based on variation, inheritance, and differential survival. Mendel discovered genetics, Pasteur disproved spontaneous generation, Lamarck proposed inheritance of acquired characters. Wallace independently arrived at natural selection.

Explanation:
During photosynthesis, water is split (photolysis), releasing oxygen as a byproduct. Respiration consumes oxygen, nitrogen fixation uses nitrogenase, transpiration releases water vapor.