Plant Physiology MCQ-1 on Photosynthesis – Light Reaction

Which of the following statement regarding the photosystem is true?

Which of the following monochromatic lights are more suitable for plant growth?

Which mineral ion play important role in the functioning of photosystem II?

The region of visible light which is most useful for photosynthesis is:

The Oxygen Evolving Complex (OEC) of photosynthesis contains a metalloenzyme core containing _______.

The process of photosynthesis which leads to the formation of glucose is a type of

DCMU inhibits photosynthesis at photosystem during:

Plants dissipate excess excitation energy as heat so as to protect from photo‐oxidative damage. The mechanism is known as

Which of the following statements are true about phytochromes?
(A). They are photoreceptors sensitive to  red and far-red region of the light
(B). Two types (Type I and Type II)
(C). Type I phytochromes are activated by far-red light
(D). Type II phytochromes are activated by red light

The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:

Which of the following statement is true regarding the number of pyrrole rings and the Magnesium atoms in a chlorophyll molecule?

What is the correct molecular formula of Chlorophyll-a?

Which of the following statement is true regarding the magnesium porphyring ring and the phytol chain of a chlorophyll molecule?

The chlorophyll is formed from proto-chlorophyll in the presence of light. For the formation of a chlorophyll molecule from a proto-chlorophyll how many hydrogen atom(s) are required?

Red-drop occurs at ______ wavelength of light.