Question

are absent since gaseous exchange occurs through the general body surface of fully submerged water plants.

Answer 1

Explanation:

Many wetland plants have gas films on submerged leaf surfaces. ... Gas films on submerged leaves enable continued gas exchange via stomata and thus bypassing of cuticle resistance, enhancing exchange of O(2) and CO(2) with the surrounding water, and therefore underwater P(N) and respiration.

These types of aquatic plants do not require special adaptations to perform photosynthesis. They can take in carbon dioxide from the air and release oxygen into the air. The exposed surfaces of the leaves have a waxy cuticle to mitigate water loss to the atmosphere, like terrestrial plants.

Hope it helpful

Answer 2

Answer:

Submerged hydrophytes grow below the water surface and thus they have the numbers of adaptation to live in water such as they respire through general leaf surface due to the absence of stomata. They do not possess an external layer on the epidermis and thus easily absorb nutrients, water and gases.

So, the correct answer is 'General surface of plants'.