Question

How do dicots differ from monocots in terms of leaf structure?

a) Dicots have parallel venation, while monocots have reticulate venation.
b) Monocots have net-like venation, while dicots have parallel venation.
c) Both dicots and monocots have net-like venation.
d) Both dicots and monocots have parallel venation.

Answer 1

Dicot leaves feature reticulate venation forming a net-like pattern, while monocot leaves exhibit parallel venation with veins running side-by-side. Tulip leaves are an example of monocot venation, and linden leaves demonstrate dicot venation.

Step-by-step explanation:

Dicots and monocots exhibit distinct veination patterns in their leaves. In dicots, veins create a net-like, or reticulate, pattern across the entire surface of the leaf. This reticulate venation forms a branching pattern that resembles a network. In contrast, monocots feature parallel venation, where the veins run side-by-side in straight lines that span the length of the leaf without meeting at an endpoint. An example of monocot leaf venation is the tulip (Tulipa), while an example of dicot leaf venation is seen in the linden (Tilia cordata). Observing venation patterns is a useful way to determine whether a plant is a monocot or a dicot, in addition to other structural characteristics such as the number of cotyledons, floral parts organization, and vascular tissue arrangement.