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Photosynthesis in Higher Plants

Multiple Choice Questions

261.

The number of chlorophyll molecules in a quantasome is

50- 100
200- 250
300- 400
500- 600

262.

Active K⁺ exchange mechanism for opening and closing of stomata was given by

Darwin
Levit
Scarth
Khorana

263.

Photosynthetic bacteria have :

pigment system I (only one pigment system)
pigment system II
both (a) and (b)
some other type

264.

Most effective wavelength of light photosynthesis is :

green
violet
red
yellow

265.

C₄ plants, synthesis of sugars/final CO₂ fixation occurs in:

palisade cells
spongy cells
undifferentiated mesophyll cells
bundle sheath cells

266.
Core of chlorophyll is formed by

Fe

Mn

CH₃

Mg

The chlorophylls are basically chelate salts of magnesium (Mg). The chlorophyll has a molecular formula C₅₅H₇₂O₅N₄Mg. This molecule is distinguishable into head of size 15 x 15 Å and a tail length of 20 Å. The head is made up of prophyrin ( a tetraphyrrole closed ring derivative) and the tail of phytol.