Photorespiration, usually occurs in
Answer: Three cell organelles
Answer: In day time - for gaseous exchange
Which of the following statements about phytochrome is true?
Answer: Pr absorbs red light and becomes Pfr
Blackman's law is related to
Photosynthetic bacteria do not contain
The photorespiratory carbon-oxidation cycle involves the interaction of
Hill reaction occurs in:
Answer: Presence of ferricyanide
Cyclic photophosphorylation invloves
The first stable product of Clavin cycle is
PS-II occurs only in
Answer: Granal thylakoids
Which of the following statements is correct?
Answer: C4 plants are more efficient than C3 plants.
Photorespiration shows formation of
Answer: Neither ATP nor sugar.
Kranz anatomy is usually associated with
C4 plants have better productivity because
Answer: C4 plants does not carry photorespiration
The first carbon dioxide fixation product of C4 plant is
Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is
Answer: Potassium hydroxide solution
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because
Answer: The primary fixation of CO2 is mediated via PEP carboxylase
The chemiosmotic coupling hypotheisis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because
Answer: A proton gradient forms across the inner mitochondrial membrane
Which of the following is incorect about the light reactions of photosynthesis?
Answer: P680 and P700 are the reaction centres of PS-I, and PS-II respectively
In blue-green algae, photosystem- II contains important pigment concerned with photolysis of water. It is a