The lateral appendages growing exogenously from the nodes of the stem are called leaves, Leaves may also grow on the branches. Leaves originate at the node and bears a bud in its axil, So development of leaf is Exogenous and origin is at the nodes.
Leaves act as indicators in various environmental conditions due to its
Answer: Option C
Explanation
Leaves act as indicators in various environmental conditions due to its large surface area. Generally the leaves are spread throught the length of the plant. So they expose large surface area and act as indicators of various environemental consitions.
Leaves which grow on the main stem are called cauline type of leaves. In some plants the main stem do not divide further into branches and thgus the leaves grow on the main stem itself.
