Question

Leaf base is sheathing in
(a)Wheat
(b)Maize
(c)Grass
(d)All of the above

Answer 1

Hint: It is the part where a leaf attaches to the stem. And it has two small leaf-like structures called stipules. In plants like paddy, wheat, and different monocotyledons, this is wide and covers the stem.

Complete answer:
In grasses and numerous monocots, the leaf base (petiole) is expansive and encompasses the stem as an envelope. Such a leaf base is known as a sheathing leaf base. In grasses, for example, wheat, maize, and grass, the sheathing leaf base ensures the intercalary meristem. Hence, the plants belonging to the family Poaceae have a sheathing leaf base.

Additional information:
Grasses might be yearly or enduring herbs, for the most part with the accompanying attributes. The stems of grasses, called culms, are generally barrel-shaped (all the more seldom smoothed, yet not 3-angled) and are empty, stopped at the hubs, where the leaves are appended. Grass leaves are almost consistently substituted and distichous (in one plane) and have equal veins. Each leaf is separated into a lower sheath embracing the stem and an edge with whole (i.e., smooth) edges. The leaf edges of numerous sorts of grass are solidified with silica phytoliths, which debilitate munching creatures; a few, for example, sword grass, are adequately sharp to cut human skin. A membranous limb or edge of hairs called the ligule lies at the intersection among sheath and cutting edge, keeping water or creepy crawlies from infiltrating into the sheath.

So the correct answer to the above question is ‘All of the above’.

Note: The Poaceae are the most monetarily significant plant family, giving staple nourishments from tamed grain yields, for example, maize, wheat, rice, grain, and millet just as feed for meat-producing animals. They give, through direct human utilization, a little more than one-half (51%) of all dietary energy; rice gives 20%, wheat supplies 20%, maize (corn) 5.5%, and different grains 6%. A few individuals from the Poaceae are utilized as building materials (bamboo, cover, and straw); others can give a wellspring of biofuel, fundamentally through the transformation of maize to ethanol.