Long answer questions:
1. Explain why, a land plant may die if its roots remain waterlogged for a long time
2. Tabulate the differences between aerobic and anaerobic respiration. Pg-6
3. Describe the process of respiration in the following parts of a plant :
(a) Root
(b) Stem
(C) Leaves
Answers
Answer:
1 ans. A land plant may die if its roots remain water logged for a long time because too much water expels all the air from in-between the soil particles. ... Under these conditions the roots will respire anaerobically producing alcohol which may kill the plant.
2 ans. There are two types of Respiration: Aerobic Respiration — Takes place in the presence of oxygen. Anaerobic Respiration –Takes place in the absence of oxygen.
3 ans .a) Respiration in roots: The roots of a plant take the oxygen required for respiration from the air present in-between the soil particles by the process of diffusion. ... (c) Respiration in leaves: The leaves of a plant has tiny pores called stomata through which the exchange of respiratory gases takes place by diffusion.