science
Grade-4-
Easy
Question
The stem of the plants grow towards the gravitational pull.
- True
- False
Hint:
The tropism is geotropism. Roots of mangroves grow upwards.
The correct answer is 'False'.
The statement is false.
Geotropism or gravitropism is of two types. For example, most plant roots exhibit positive gravitropism and grown downward. An exception to this rule is some mangrove roots. Mangroves are trees or shrubs that grow in intertidal zones along coasts of salt or brackish water. Some of their roots exhibit negative gravitropism. They grow out of the ground. This allows access to oxygen for plant cell respiration.
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