GENERAL KNOWLEDGE

GK

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The leaf is known as the ____
A
photogenic organ
B
Photosynthetic organ
C
Photographic organ
D
None of the above
Explanation: 

Detailed explanation-1: -Leaves are the main photosynthetic organs in plants and thus they are eminently important for growth and biomass accumulation. Leaves develop from the flanks of shoot apical meristems and after an initial phase of cell proliferation and polarity establishment they enter expansion and maturation phases.

Detailed explanation-2: -The leaves contain the majority of mesophyll (photosynthetic plant tissue), making them the primary photosynthetic organ in plants-it looks like this: Chloroplasts are organelles found inside the mesophyll. These organelles turn the sun’s light energy into chemical energy that the plant can use.

Detailed explanation-3: -Cells in the mesophyll of the leaf have numerous chloroplasts. In leaves, cells in the mesophyll (the tissue between the upper and lower epidermis) are uniquely suited to carry out photosynthesis on a large scale. This is due to their high concentration of chloroplasts, which are the sites of photosynthesis.

Detailed explanation-4: -In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle-the chloroplast. Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP, are used by the photosynthetic cells to produce many organic molecules.

There is 1 question to complete.