Question

Which of the following occurs in the grass and regenerates the part removed by the grazing herbivores?
A. Promeristem
B. Primary meristem
C. Secondary meristem
D. Lateral meristem

Answer 1

Hint: Plant tissue are mainly divided into three categories-
(i) meristematic tissue
(ii) permanent tissue and
(iii) secretory tissue
Meristematic tissues are group or cluster of cells which remain in a continuous state of division or retain their power of division. This meristematic tissue divide to form new cells that differentiate to give rise to permanent tissue.

Complete answer: The meristems which occur at the tip of roots and shoots and produce primary tissue is called apical meristems
1. The root apical meristem occupies the tip of the root while the shoot apical meristem occupies the distant most region of the stem axis.
2. During the formation and elongation of stems, some cells left behind from shoot apical meristem called an axillary bud.
3. The meristem which occurs between the mature tissues is called intercalary meristems. They occur in the grass and regenerates the part removed by the grazing herbivores
4. As apical meristems and intercalary meristems, both constitute primary meristems because they appear early in life and contribute to the formation of the primary plant body.

Additional information: The meristem which occurs in mature regions of shoot and root of many plants particularly those in the woody axis and appears and appears later than primary meristem is called lateral meristem or secondary meristem.
Examples are cambium, cork cambium, and marginal meristem.

So the correct answer is B.Primary meristem

Note: Intercalary meristem of primary meristem is capable of regenerates the part removed by the grazing herbivores.