Mangrove pneumatophore roots a. prop the trees up above the water line b. excrete

Mangrove pneumatophore roots : A. prop the rees up above water line The roots of mangrove is actually located below the water line. But it form some sort of survival mechanism since they really need to be in contact with outside air for metamorphosis, so it prop the leaves and some part of the tree above water line

Correct A). Prop the trees up above the water line

Mangrove pneumatophore is the specialized root structures that are known to grow out of the water surface and help in the respiration of mangrove plants. They allow the collect oxygen from the atmosphere.

It mainly grows in mud and there the conditions are anaerobic means lack of oxygen. Oxygen is necessary for their survival that is done by the mangrove pneumatophore roots.  

Hence, the correct answer would be option A.

The biggest advantage is that they have a higher resolution and are therefore also able of a higher magnification (up to 2 million times). Light microscopes can show a useful magnification only up to 1000-2000 times. This is a physical limit imposed by the wavelength of the light.

Explanation:

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