What is the location of intercalary meristem in plants?
- A.Base of the leaves or internodes
- B.Stems or roots
- C.Tips of stems and leaves
- D.Base of flower pedicel
Correct answer
Explanation
The correct answer is A, Base of the leaves or internodes. Intercalary meristem lies between mature tissues, at the base of leaves and of internodes.
Meristems are tissues whose cells keep dividing. They are of three kinds by position. Apical meristem sits at the tips of the shoot and root and makes the plant longer. Lateral meristem, the vascular cambium and cork cambium, lies along the sides of stems and roots and makes them thicker. Intercalary meristem is found at the base of leaves and internodes, mostly in grasses and other monocots. It lets a grass leaf or a bamboo stem grow back after the top is grazed or cut.
B is wrong because the meristem along the length of stems and roots is the lateral meristem, which adds girth.
C is wrong because the tips of stems and roots carry the apical meristem.
D is wrong because the base of the flower pedicel is not a standard site of meristem.
Exam tip: apical, length at tips; lateral, girth at sides; intercalary, regrowth at the base of leaves and internodes in grasses.
Practice Questions
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Show answer
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