Suppose there were plants that had a high concentration of Chlorophyll-b, but lacked chlorophyll-a, would it carry out photosynthesis? Then why do plants have chlorophyll-b and other accessory pigments?

What would happen if plants did not have accessory pigments?

In the figure given below, the black line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll a, answer the followings: If chlorophyll-a is responsible for light reaction of photosynthesis, why do the action spectrum and absorption spectrum not overlap?

Think of a plant which lacks chlorophyll. From - where will it obtain nutrition? Give an example of such a type of plant.

Chlorophyll 'a' is the primary pigment for light reaction. What are accessory pigments? What is their role in photosynthesis?

Which of the following metal of found in green colouring pigment chlorophyll of plants ?

Read the statements, A)7 types of chlorophylls are present in photosynthetic organisms. B) C_55H_72O_5N_4 Mg act as a reaction centre/essential pigment or trapping centre. C) Chlorophyll a is characterized by the side group of methyl which is replace by aldehyde (CHO) in chlorphyll b. D) Porphyrin head is hydrophilic and phytol tail are lipophilic.

Read the following statements and find out the incorrect statement. A. Ultimately all the food that is respired for life processes comes from photosynthesis. B. The energy released by oxidation in respiration is directly used for the life processes. C The carbon skeleton produced during respiration is used as precursors for biosynthesis of other molecules in cell. D. Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose. E. During oxidation within a cell, all the energy contained in, respiratory substrates is released free into the cell in a single step, which is trapped as chemical energy in the form of ATP.

Apart from chlorophyll, algae have several other pigments in their chloroplast. What pigments are found in blue-green, red and brown algae that are responsible for their characteristic colours?

Is it correct to say that photosynthesis occurs only in leaves of a plant? Besides leaves, what are the other parts that may out be capable of carrying photosynthesis? Justify.

(a) A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 60 ^@ with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil from turning. (b) Would your answer change, if the circular coil in were replaced by a planar coil of some irregular shape that encloses the same area? (All other particulars are also unaltered.)