Question

Which of the following parts of the plant performs photosynthesis?
A. Leaves
B. Stem
C. Roots
D. Root nodules

Answer 1

The plant is morphologically divided into roots, stem and leaves. The green-coloured pigment called the “chlorophyll” performs the process of photosynthesis in plants. This pigment is present in the chloroplast of a cell.

Complete answer:
Leaves perform photosynthesis in plants. Leaves have mesophyll cells that contain chloroplasts in them. The chloroplast is a double-membraned organelle that contains the green-coloured pigment called chlorophyll which absorbs light from the sun and performs photosynthesis. A leaf is the principal lateral appendage of the flora stem, generally borne on high ground and specialised for natural action. The leaves and stem kind the shoot. Leaves square measure are listed as foliage, as in "autumn foliage".
i. A stem is one in all two main structural axes of flora, the other being the premise. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and thus the shoots among the plant tissue and bast, stores nutrients, and produces new living tissue.
ii. Roots absorb water and minerals and transport them to stems. They jointly anchor and support a plant, and store food. A system consists of primary and secondary roots. Roots grow long and breadth from primary and secondary plant structure.
iii. Root nodules are round-like structures found in the roots of plants, primarily legumes. It shows a symbiotic relationship with nitrogen-fixing bacteria.
Hence, the correct answer is option A.

Note: Photosynthesis involves two important reactions; light-dependent and light-independent reactions. In light-dependent reactions, ATP and NADPH are produced; these are energy-containing molecules, whereas, in light-independent reactions, the energy produced in the previous reaction is used to fix carbon dioxide that enters the plant via stomata.