Question

What type of leaf margin is found in grasses? A. Crenate B. Dentate C. Entire D. Serrate

Answer 1

Hint: The leaf margin is the boundary area of the leaf that is extending along the edge of the leaf. There are many types of leaf margins that are important for plant identification. While leaves on a single tree may have different sizes, they will have the same general shape and margin. The grasses have leaves that are smooth all the way.

Complete answer:Grasses more technically called the graminoids are monocotyledonous, usually herbaceous plants with narrow leaves growing from the base. The true grasses include cereals, bamboo, and the grasses of lawns (turf) and grassland. The grasses are usually upright and cylindrical, having alternating leaves that are anchored to the soil by roots.
Grasses consist of-
1. Leaves
2. Stem
3. Collar region
4. Roots
5. Tillers and during the reproductive stage, an inflorescence or seed head develops.
The grass leaf is an elongated structure arising at the node and consisting of a basal cylindrical sheath that encircles the stem and younger leaves. Above this, there is a flattened blade with parallel venation.
Leaf-sheaths are hollow cylinders that split down one side with the margins usually overlapping. All of the above ground section of grass is collectively called the shoot. Within the shoot are separate parts named as the stem, the leaves, and the seed head (inflorescence). There are two parts of a grass leaf.
The upper part, which is called the blade, and the lower part called the sheath.
So, the entire leaf margin is found in grasses.
Hence option Dis correct.

Note: Grass plants develop fruit called grain which feeds much of the world and yet have green leaves and stems not digestible for humans that are the main food source for animals. We can also use grasses for building materials, biomass fuels and medicines.