List of top Biology Questions on Plant Physiology & Biochemistry

Which of the following elements is essential for the synthesis of chlorophyll?

Which of the following is responsible for the transport of water in plants?
Which one of the following plant tissue culture techniques can be most effectively used for production of virus-free plants?
Which one of the following tissue culture approaches is most appropriate for production of double haploid plants?
Enhanced CO2 concentration in environment would lead to ________ in plants.

Given below are two statements:
Statement I: In general, a higher auxin to cytokinin ratio will induce root formation under in vitro culture conditions in plants.
Statement II: NAA is a cytokinin and BAP is an auxin.
In light of the above statements, choose the most appropriate answer from the options given below.

In plant mycorrhizal fungi association, what is the most appropriate exchange between two organisms or partners?
Complete the following statement with the correct option:
Agrobacterium-mediated plant transformation in the laboratory
The principle driving force behind movement of water in plants is known as
Which one of the following is NOT an auxin?

 Growth curve ‘B’ shows a different pattern from that of growth curve ‘A’. Justify giving one reason. 
 

Name the type of age pyramid shown above for Rwanda.
The enzyme that is not found in C3 plants is
A student observes grass and Hibiscus plants in his garden during noon. To his surprise, only the leaves of grass were found rolled inwards. The reason could be
Dark respiration is the function of
The most quickly available source of nitrogen to plants are
One of the major difficulties in the biological control of insect pest is that
The rate of growth of plants can be measured by a
Which of the following is not a C4 plant?
Hardest substance in plant kingdom is
Which one is only found in plant?
Which of the following statements are correct?
(i) Solution culture/hydroponics contains all essential minerals except one, the usefulness of which is to be determined.
(ii) Na, Si, Co and selenium are beneficial element required by higher plants.
(iii) Zn is the activator of nitrogenases while Mo is the activator of alcohol dehydrogenase.
(iv) Zn is needed for auxin synthesis.
Photosystem II occurs in
High levels of ABA are synthesized in
Minerals absorbed by root move to the leaf through