NEET Botany MCQs

Which combination of factors would MOST effectively enhance the rate of transpiration in a plant?

Under conditions of high temperature and low humidity, which factor MOST directly exacerbates the transpiration and photosynthesis compromise?

Which of the following environmental factors would MOST directly influence the transpiration-photosynthesis compromise?

Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?

I. Temperature of about 25°C

II. Temperature of about 5°C

III. Relative humidity of about 5%

IV. Relative humidity of about 95%

V. A shady place

VI. A brightly illuminated place

    Humidity in atmosphere decreases rate of

    Which one is true about guttation?

    The rate of transpiration will be very less in a situation where

    Read the following statement carefully and choose the right answer from the codes given below

I.    PMA and silicon oil of low viscosity are considered as antitranspirant

II.    BAP, NAA and cobalt chloride is also used as antitranspirant

III.    Abscisic acid affects the mechanism of opening and closing of stomata

IV.    Starch of guard cells is converted into PEP ions by the process of hydrolysis

V.    Potometer works on the principle of potential difference between the tip of the tube and that of plant

VI.    Transpiration rate is directly proportional to the relative humidity

Viability of pollen grains depends on