Xanthophylls

The diagram shows the structure of a fungal cell with different parts labelled as A,B,C and D. Which of the following statements are true with regard to the fungal cell structive? (i) A contains mucopolysaccharides which are also present in exoskeleton of insects and crustaceans. (ii) D are usually more than one in number in case of aseptate hyphae. (iii) Carotenes and xanthophylls are present in C, which harvest light energy for photosynthesis. (iv) B is the reverse food material, usually stored in the form of starch and oil.

The common xanthophyll occuring in leaves is

Carotenes and xanthophyll pigments absorb radiant energy and

Who revealed the chemical composition of chlorophyull caretene and xanthophyll

Yellowish colour of autumn foliage is due to the presence of a type of xanthophyll pigment called as

Assertion: In chlorophyceae, plant body is usually grass green. Reason: Members of chlorophyceae, possess chlorophyll a, c, carotenoids and xanthophyll.

Photosynthetic pigmetns such as chl a,chl b,xanthophyll and carotene can be separated by which of the following techniques?

Which of the following statement is / are incorrect ? (i) Green light falling in the range of wavelength 500 0 -580 nm is least effective for photosynthesis. (ii) In non - cyclic photophosphorylation, the electron expelled from the reaction centre is not cycled back , though its loos is compensated by electrons from the photolysis of water . (iii) Chl a , Chl b , carotenoids , and xanthophylls are insoluble in organic solvents. (iv) 400-700 nm light is used in photosynthesis also known as PAR. (v) Red light is the most effective for photosynthesis.