Plants can also receive too much water and ultimately "drown" Paradoxically, even thought the roots of a plant maybe - Biology - Anatomy of Flowering Plants

Question

​Plants can also receive too much water and ultimately
"drown" Paradoxically, even thought the roots of a plant maybe
standing in water, its leaves maybe drying out
a) Is standing water harmful for the plant?How?
b) How mangrove plant becomes a better adaptation w r t such
conditions?

Mohammad Perwez · Accepted Answer

Dear student,
a) Standing water is harmful for the plants because in the standing
water gaseous exchange process is stopped and root is not able to
take oxygen Different organism (algae, fungi, bacteria etc ) die in
the standing water and decay producing sulfur compound due to which
soil under standing water smells bad So, the change in the
ecosystem of the standing water due to which root starts rotting
and therefore is harmful for plants

b) Mangrove plants have adaptation for standing water Root of the
mangrove plant comes out above water for absorbing oxygen from air
such roots are called pneumatophores Pneumatophores have lenticels
(pores in the roots for absorbing oxygen) which closes at times of
high tide or when they are submerged for longer and thus saves
mangrove plants from drawning

Regards

​Plants can also receive too much water and ultimately "drown". Paradoxically, even thought the roots of a plant maybe standing in water, its leaves maybe drying out. a) Is standing water harmful for the plant?How? b) How mangrove plant becomes a better adaptation w.r.t such conditions?

Plants can also receive too much water and ultimately "drown". Paradoxically, even thought the roots of a plant maybe standing in water, its leaves maybe drying out.
a) Is standing water harmful for the plant?How?
b) How mangrove plant becomes a better adaptation w.r.t such conditions?