NEET BIOLOGY

STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS

ANATOMY OF FLOWERING PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
DORSIVENTRAL LEAF HAS MORE STOMATA GENERALLY ON
A
ABAXIAL SURFACE
B
ADAXIAL SURFACE
C
BOTH SURFACES
D
NEITHER OF THESE
Explanation: 

Detailed explanation-1: -In order to reduce the loss of water due to transpiration the dorsiventral leaf has more stomata in the lower surface than the upper surface.

Detailed explanation-2: -Hence, to prevent excessive water loss in terrestrial plants, the large number of stomata are present at the lower surface of leaves.

Detailed explanation-3: -In dorsiventral leaves, epidermis is present on the outer side of both upper (adaxial) and lower (abaxial) surfaces with cuticle deposition and stomata. Stomata are usually present only on the lower surface.

Detailed explanation-4: -So, the correct answer is Stomata mainly present on the lower epidermis. Note:-In dorsiventral leaves, the stomata may not be necessarily present in the upper epidermis. In some cases, it may be absent in the upper epidermis.

Detailed explanation-5: -The leaf dorsiventral polarity In mature leaves, the side towards the sun is the adaxial side and the other side is the abaxial side. The adaxial sides are greener and have more cuticle than the abaxial sides. The position and structures of the two sides also reflect different functions of the two domains.

There is 1 question to complete.