Question

Find the odd one out in the following:
Venation, shape of seeds, leaf petiole, leaf shape

Answer 1

The plants are the primary source of food in the environment and are one of the basic units of the ecosystem plants make food for the consumers in the ecosystem by the process of photosynthesis. The leaf is an essential part of the plant which contains nutrients and other ingredients necessary for preparing the edible portion of the plant which may be a stem, leaf, or fruit. A leaf is called the kitchen of plants.

Complete answer:
There are so many parts of the leaf such as leaf base, petiole, leaf blade, venation parallel venation, reticulate venation.
-Leaf base: It is the place in the stem in which the leaf petiole attaches. To stipules, which are a tiny structure similar to a leaf are found here. Monocotyledonous like paddy wheat has a large leaf base and can cover the stem.
-Petiole: This is the structure that attaches the leaf blade of the plants to the base of the leaf. The length of the petiole depends on the species of the plant.
-Leaf-blade/lamina: This is the main structure of the leaf, which is green in colour. The leaf blade has a main vascular supply running in the centre of the leaf called the midrib. The veins of the leaf run through the middle and then let's the main branch out of it.
-Venation: Venation is the pattern or shape in which the vascular system of the venules of the leaves is arranged. It is classified into two types first is parallel venation and the second is reticulate venation.
-Parallel venation: In this type, the veins and veinlets are arranged parallel to one another.
-Reticulate venation: In this type of venation, the veins from the like network, and there is no specific shape of the network. All these terms, that is venation, leaf petiole, and shape of leaf are related to leaf.

Thus, the answer is ‘Shape of Seeds'.

Note: The leaves can be divided into two main categories that are simple leaves and compound leaves. The simple leaves are the leaves that originate from the branch or stem and do not divide any further into a small leaflet. While compound leaf if the leaf which is divided further into leaflets from the single leaf base and petiole.