Question

A plant with parallel venation
A. Castor
B. Grass
C. Colocasia
D. Mustard

Answer 1

Hint: Parallel venation is generally observed in monocot plants whereas the dicot plants will form reticulate venation. In plants with parallel venation, the veins will never meet.

Complete answer:
Veins are a part of the vascular tissue that is present throughout the plant. The organization/design of the veins in the leaves are called venation.Venation plays a crucial role in differentiating different plants based on their characters. It is important for providing mechanical support, growth, and coordination among various parts of plants.The two types of venation are parallel venation and reticulate venation. As grass is monocot it shows parallel venation.

Fig.A. Leaf representing parallel venation

Fig.B. Leaf representing Reticulate venation


Additional Information:
Parallel venation: The arrangement of veins parallelly to each other is called parallel venation. In parallel venation, the veins will certainly not join to other veins. Also, branching will not be observed in plants having parallel venation.
Monocot plants form parallel venation. The mid-vein characteristics will classify parallel venation into pinnate parallel venation and palmate parallel venation.
Pinnate parallel venation: It possesses a central mid-rib from which numerous veins will arise in a perpendicular direction and will be parallel to each other.
Palmate parallel venation: The veins rise from the petiole and will run parallelly to each other. These veins will join on the apex. Palmate parallel venation is further classified into convergent and divergent parallel venation.
The veins of the grass rise from the laminal base of the leaf and will converge at its apex. Hence it is called convergent parallel venation.

So, the correct answer is ‘grass’.

Note: The other type of leaf venation is reticulate venation in which the veins look like a web. Monocot plants like grass, bamboo, wheat, banana, maize form parallel venation. On the contrary, Calophyllum, a dicot plant shows parallel venation and Smilax species, a monocot plant forms reticulate venation.