Factors Affecting Photosynthesis

When two plants $\mathrm{L}$ and $\mathrm{M}$ were exposed to different light intensities and temperatures, they showed changes in their rates of photosynthesis, which have been represented in the following graph. 

The graph indicates that

Which of the following is not an internal factor that has role in photosynthesis?

Deactivation of enzymes above $40°\mathrm{C}$ affects the _________ of photosynthesis and decreases the rate of photosynthesis.
 

Rate of photosynthesis is __________ than that of respiration during the day time.
 

${\mathrm{C}}_3$plants respond to the higher $C{O}_2$ concentration by showing increased rates of photosynthesis, leading to higher productivity. This feature has been used for some greenhouse crops such as

What happens to plants that are adapted to low light intensity?

When $NaHC{O}_3$ is added in small quantity in an experiment showing photosynthesis, what will be the effect of $NaHC{O}_3$ on the rate of photosynthesis?

Relationship between the incident light and the $C{O}_2$ fixation rate is

The major limiting factor for photosynthesis is

I) In the majority of plants, light saturation occurs at __A__ of the total sunlight available to plants.
II) The photosynthetic process utilises __B__ of water absorbed by the plant.

Who gave the "law of limiting factors"?

Who first discovered the photosynthesis process?

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

Rate of photosynthesis increases with the :-

The effect of high concentration of ${\mathrm{O}}_2$ on the rate of Calvin cycle is an example of

At low light intensities, the relation between the incident light and ${\mathrm{CO}}_2$ fixation rates is:-

At high oxygen concentration, the rate of photosynthesis will decrease due to:

Law of limiting factors was proposed by:-

Select the incorrect statement :-

(i) Atmospheric ${\mathrm{CO}}_2$ is not limiting factor for ${\mathrm{C}}_4$ plants and submerged hydrophytes.

(ii) Dark reaction is less affected by temperature as compared to light reaction.

(iii) $\mathrm{DCMU}$ and monuron inhibit the photosynthesis by blocking ${\mathrm{e}}^{-}$ flow between $\mathrm{P}-680$ and $\mathrm{PQ}.$

(iv) In cyclic $\mathrm{E}.\mathrm{T}.\mathrm{S}.$ diquat and paraquat inhibit $\mathrm{e}{ }^{–}$ flow between ${\mathrm{P}}_{700}$ and $\mathrm{Fd}.$

(v) ${\mathrm{CO}}_2$ saturation point for ${\mathrm{C}}_3$ plants is $360 \mu \mathcal{l}/\mathrm{L}.$

Under the normal condition, which one is the major limiting factor for C₃ plant ?