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

• palisade cells

• spongy cells

• undifferentiated mesophyll cells

• bundle sheath cells

The specific character of C₄  plants is

• bulliform cells

• Kranz anatomy

• parallel venation

• isobilateral leaf

In CAM plants, CO₂ acceptor is

• RuBP

• PEP

• OAA

• PGA

Law of limiting factor was given by

• Leibig

• Blackman

• Calvin

• Arnon

Which one of the following contain agranal chloroplasts?

• C₃ plants

• Succulants

• C₄ plants

• Hydrophytes

For synthesis of one hexose sugar, how many times Calvin cycle is turned ?

• 12

• 2

• 6

• 3

The number of chlorophyll molecules in a quantasome is

• 50- 100

• 200- 250

• 300- 400

• 500- 600

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

• Darwin

• Levit

• Scarth

• Khorana

Photosynthetic bacteria have :

• pigment system I (only one pigment system)

• pigment system II

• both (a) and (b)

• some other type

Most effective wavelength of light photosynthesis is :

• green

• violet

• red

• yellow