When a lawn is mowed regularly, the grass regrows because:
AGrass cells multiply by themselves anywhere
BGrasses have intercalary meristems at the base of leaves and stems — so even after the top is cut, the meristem at the bottom continues to produce new tissue, regrowing the cut portion
CMowing fertilises the grass
DGrass leaves grow from the leaf tip
Answer & Solution
Correct answer: B. Grasses have intercalary meristems at the base of leaves and stems — so even after the top is cut, the meristem at the bottom continues to produce new tissue, regrowing the cut portion
Grasses keep their growth zones (intercalary meristems) low — at the base of leaves and stems, not at the tip. So when a lawn mower or a grazing animal cuts off the top, the meristem is untouched and continues producing new tissue. This is a key adaptation of grasses (and a reason they thrive in grazed environments like savannas).
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