Question

Venation is monocots in—
A. Pinnate reticulate
B. Palmate reticulate
C. Pinnate parallel
D. Parallel

Answer 1

Hint: The arrangement of veins in a leaf is venation. Monocot plants are bulbing types of plants like daffodils, garlic, tulips etc. Dicot plants are— sunflowers, marigolds, buttercups, grapes, dandelions etc. These patterns on the leaves can be easily seen with naked eye.

Complete answer: A leaf has many parts— blade, stipules, margin and a midrib. Leaves can be alternate, whorled, spiral or twisted. A leaf can be seen as a simple structure. Venation is defined as the arrangement of the veins on a leaf. They can be of two types—
> Reticulate venation— this is the type where the veins form an irregular distribution.for eg — it is seen in the leaves of plants like rose, tulsi, papaya, hibiscus etc.
> Parallel venation — this involves a regular distribution with veins running parallel in the leaf. It is seen in plants like bananas, grass, grains etc.
In the case of monocots the Venation seen is parallel. In case of dicots the venation seen is reticulated.

So the correct answer is D i.e parallel.

The dicots have a net like venation. The venation can be easily seen on some leaves. Trees like Ginkgo have a dichotomous venation which is the axis split at the end in two branches.

Note: Venation is the arrangement of veins in a leaf. In plants like tulsi, rose the venation is reticulated i.e. irregular. In plants like grains, musa, grass the venation is parallel. Parallel is the orientation of the veins in the leaf. Dicots have an irregular net like pattern on the leaves.