Photosynthesis in higher plants practice · Mixed difficulty

Cyclic photophosphorylation results only in the

Which of these ensures that the RUBISCO functions as a carboxylase minimising the oxygenase activity at the site of ${O_2}$ fixation in ${C_4}$ plants?

Cyclic phosphorylation occurs at which wavelength

Movement of ${H^ + }$ from lumen to stroma through the ${F_0}$ portion of ATP ase is?

The special structure present in ${C_4} -$ plants in

Consider the following statements.
I. The portion of the spectrum between 300-500 nm is also referred to as Photosynthetically Active Radiation (PAR).
II. Magnesium, calcium and chloride ions play prominent roles in the photolysis of water.
III. In cyclic photophosphorylation, oxygen is not released (as there is no photolysis of water) and NADPH is also not produced.

Electrons are picked up by an electron acceptor which passes them to an electron transport system consisting of

Photorespiration is favoured by

Kranz anatomy pertains to

Using a prism, a scientist splitted light into its spectral components and then illuminated a green alga, Cladophora. In the above statement the scientist who performed the above experiment was

I. Temperature
II. $C{O_2}$ concentration
III. Chlorophyll arrangement
IV. Water
Among the given factors, identify the external factors that affects the rate of photosynthesis and correct option accordingly

Kranz Anatomy is one of the characteristics of the leaves of

The primary $C{O_2}$ acceptor molecule in ${C_3}$ cycle is a

Select the incorrect statement for $\mathrm{C}_4$ pathway.

In which of the following form glucose is usually stored in plants?

Ultimate source of hydrogen atoms for the synthesis of glucose is?

In ${C_4}$ plants, Calvin cycle operates in the

In the bundle sheath cells of ${C}_4$ plant the intracellular concentration of ${CO}_2$ is increased by

Assertion : Rate of photosynthesis is
dependent of duration of exposure of light.

Reason : At higher light intensities gradually
rate of photosynthesis do not show further
increase.

Which of the following statements are correct?
I. Light reaction occurs in stroma
II. Light reaction occurs in grana
III. Dark reaction occurs in stroma
IV. Dark reaction occurs in grana
Choose the correct option

Who gave Law of $10 \%$ ?

Assertion : Under conditions of high light
intensity and limited $C{O_2}$
supply,
photorespiration has a useful role in protecting
the plants from photo-oxidative damage.

Reason : If enough $C{O_2}$
is not available to utilize
light energy for carboxylation to proceed, the
excess energy may not cause damage to plants.

Site of photosynthesis in ${C_4}$ plant is

In PSII, the reaction centre chlorophyll a has an absorption peak at

In PS – II, first known ${\mathrm{e}^ - }$ acceptor

What happen to the chloroplast pigment when they absorb light?

The primary $C{O_2}$ accepter in ${C_4}$ plants in mesophyll cells are

In kranz anatomy, the bundle sheath cells have?

Identify the wrong statements.

(A) Cytochrome C is a small protein attached to inner surface of the outer membrane.

(B) Electrons from complex I are transferred to ubiquinone located within the inner membrane.

(C) The temperature optimum for photosynthesis of different plants does not depend on the habitat that they are adapted to.

(D) There is no linear relationship between incident light and $\mathrm{CO}_2$ fixation rates at low light intensities.

In an experiment, chloroplasts were made acidic by soaking them in acidic solution. What will happen if this chloroplast is transferred to a solution having basic pH?