Following statements are made in relation to the five widely recognized stages of Arabidopsis embryogenesis:

A. The fusion of haploid egg and sperm takes place in zygotic stage

B. Rapid cell division in two regions on either side of the future shoot apex forms globular stage

C. The cell elongation throughout the embryo axis and further development result in Torpedo stage

D. The embryo loses water and becomes metabolically inactive in the torpedo stage

Which combination of the above statements is correct?

TLS Online TPP Program

#Question id: 29117

#Unit 6. System Physiology – Plant

Light reactions of photosynthesis are carried out by four major protein complexes: Photosystem I (PSI), photosystem II (PSII), the cytochrome b6f complex and ATP synthase. The following are certain statements on PSII:

a. Red light absorbed by photosystem II (PSII) produces a strong oxidant and a weak reductant.

b. Far-red light absorbed by photosystem II (PSI) produces a weak oxidant and a strong reductant.

c. The strong oxidant generated by PSII oxidizes water,

d. The strong reductant generated by PSII oxidizes water

Which one of the following combinations of the above statements is correct?

TLS Online TPP Program

#Question id: 29118

#Unit 6. System Physiology – Plant

Which one of the following statements related to photosynthesis is NOT correct?

TLS Online TPP Program

#Question id: 29416

#Unit 6. System Physiology – Plant

Which of the following is not a phase of phases of the Calvin cycle

TLS Online TPP Program

#Question id: 29417

#Unit 6. System Physiology – Plant

The first committed enzymatic step in the Calvin cycle is the reaction of CO2 and water with a five-carbon acceptor molecule is catalyzed by?

TLS Online TPP Program

#Question id: 29418

#Unit 6. System Physiology – Plant

Phases of the Calvin cycle and their catalyzing enzymes and class is given 

(a) Carboxylation is catalyzed by rubisco 

(b) Carboxylation is catalyzed by PGK and GAPDH

(c) Reduction of 3-phosphoglycerate is catalyzed by PGK and GAPDH

(d) Regeneration is catalyzed by isomerase, aldolases, and epimerases

Choose which of the following is INCORRECT

TLS Online TPP Program

#Question id: 29419

#Unit 6. System Physiology – Plant

The fixation of three molecules of CO2 into one molecule of triose phosphate requires