question_answer 94)

  In each of the following situations what happens to the rate of photosynthesis? (a) Cloudy days           (b) No rainfall in the area (c) Good managing in the area        (d) Stomata get blocked due to dust  

Answer:

                    (a) Cloudy days the rate of photosynthesis will decrease because sunlight is necessary for photosynthesis. On a cloudy day, there will be less sunlight. (b) No rainfall in the area the rate of photosynthesis will decrease because water is one of the raw material needed by plant for photosynthesis. If there is no rainfall in an area there will be less water available to plant. (c) Good managing in the area the rate will increased because plants need raw minerals such as N, P, Fe, Mg, etc., for building their body and take these minerals from the soil. Good manuring in the area will increase the amount of these minerals in the soil thus increasing photosynthesis. (d) Stomata get blocked due to dust the rate will decrease because CO2 gas required for photosynthesis enters the leaves through the stomata. If the stomata gets blocked due to dust, less CO2, or no CO2 would enter the leave and the rate of photosynthesis will drop.