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The translocation of organic solutes in sieve tube members is mainly supported byCorrectIncorrect
Stomata of a plant open due toCorrectIncorrect
Which of the following is used to determine the transpiration rate of plants?CorrectIncorrect
Which of the following criteria does not relate to facilitated transport?CorrectIncorrect
Bidirectional translocation of solutes takes place inCorrectIncorrect
Which of the following statements is/are not incorrect?
(i) Water and minerals, and food are generally moved by a mass or bulk flow system.
(ii) Bulk flow can be achieved either through a positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient.
(iii) The bulk movement of substances through the conducting tissues of plants is called translocation.
(iv) Xylem translocates organic and inorganic solutes, mainly from roots to the aerial parts of the plants.
(v) Phloem translocates water, mineral salts, some organic nitrogen and hormones, from the leaves to other parts of the plants.CorrectIncorrect
If a cell A with D.P.D. 4 bars is connected to cell B, C, D whose O.P. and T.P. are respectively 4 and 4, 10 and 5 and 7 and 3 bars, the flow of water will beCorrectIncorrect
Minerals are known to enter the plant root by means of a number of mechanisms, including all except one of the following. Which one of the following is NOT a mechanism for moving minerals into roots?CorrectIncorrect
A botanist discovered a mutant plant that was unable to produce materials that form casparian strip. This plant would beCorrectIncorrect
The pathway of water from soil upto the secondary xylemCorrectIncorrect
Osmosis is a form of diffusion in whichCorrectIncorrect
Turgor pressure become equal to the wall pressure whenCorrectIncorrect
The capacity of the Venus fly trap to catch insects is due toCorrectIncorrect