Q821
Open questionCobalt acts as a prosthetic group of enzymes responsible for synthesis of
Select an option to see the answer and solution.
Biology GK · all questionsPlant Anatomy and Physiology
Plant Anatomy and Physiology
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
999
Questions
42/50
Page
Pick an option on a question to see the right answer and solution.
Q822
Open questionPhotosystem I (PS-I) and Photosystem-II (PS-II) are named
Select an option to see the answer and solution.
Q823
Open questionCAM helps the plants in
Select an option to see the answer and solution.
Q824
Open questionIn some bisexual flowers where the stigma and anthers mature at the same time, self-pollination is avoided by some sort of barrier. This condition is known as
Select an option to see the answer and solution.
Q825
Open questionThe process by which the humus derived from the dead organic matter gets mixed in the upper layers of the soil which becomes dark coloured, is known as
Select an option to see the answer and solution.
Q826
Open questionCarbon and energy requirements of an autotrophic organism are fulfilled by
Select an option to see the answer and solution.
Q827
Open questionWhich of the foliowing biogeochemical cycles has no atmospheric phase?
Select an option to see the answer and solution.
Q828
Open questionWhich of the following phytohormone is mainly responsible for fruit ripening?
Select an option to see the answer and solution.
Q829
Open questionAll ephemeral herbs which blossom suddenly after a shower belong to which of the following categories?
Select an option to see the answer and solution.
Q830
Open questionIntracellularly, photorespiration occurs in which of the following organelles in association with chloroplast and mitochondria?
Select an option to see the answer and solution.
Q831
Open questionIn which of the following regions, severe environmental conditions permit inhabitation by some organisms only in the resistant stages of their life cycle?
Select an option to see the answer and solution.
Q832
Open questionThe phenomenon of growth is immediately followed by
Select an option to see the answer and solution.
Q833
Open questionThe type of style where a disc-like swelling is found at the base of the style is known as
Select an option to see the answer and solution.
Q834
Open questionConsider the following statements and choose the correct answer:
1. In Oenothera type of monosporic embryo sac, the embryo develops from the micropylar megaspore of the tetrad
2. Antipodal cells are altogether absent in Oenothera type
3. The genus Trapa forms an 8-nucleate embryo sac of the Polygonurn type
4. Oenothera type of embryo sac development has been found to be a characteristic feature of the entire family Onagraceae
1. In Oenothera type of monosporic embryo sac, the embryo develops from the micropylar megaspore of the tetrad
2. Antipodal cells are altogether absent in Oenothera type
3. The genus Trapa forms an 8-nucleate embryo sac of the Polygonurn type
4. Oenothera type of embryo sac development has been found to be a characteristic feature of the entire family Onagraceae
Select an option to see the answer and solution.
Q835
Open questionWhich of the following is one of the prerequisites for abscission?
Select an option to see the answer and solution.
Q836
Open questionThe chlorophyll b differs from chlorophyll a in having
Select an option to see the answer and solution.
Q837
Open questionFlower colours of red, pink, blue and purple come mainly from the pigments called . . . . . . . .
Select an option to see the answer and solution.
Q838
Open questionThe term 'plankton' was first introduced in 1887 by
Select an option to see the answer and solution.
Q839
Open questionThe direct or immediate effect of pollen on the character of the seed or fruit is called
Select an option to see the answer and solution.
Q840
Open questionPhotosynthesis occurs in
Select an option to see the answer and solution.