What is venation? What are the two types of venation?
The pattern in arrangement of veins in the blade of a leaf is called as venation. Two types of venation are reticulate venation and parallel venation.
Reticulate venation involves net-like pattern of arrangement of veins. Most of the angiosperms with two cotyledons in the seed exhibit reticulate venation. e.g. Rose, Maple, Tulsi, Hibiscus, Red gram etc.
Parallel venation involves smaller veins running parallel to each other. Most of the monocot plants exhibit parallel venation in their leaves. e.g. Grains, banana, palm, onions, and grass etc.
Leaves in monocots show parallel venation whereas leaves in dicots show reticulated venation.