the growth of roots toward gravity is called ______.
Answers
Answer:
Gravitropism (also known as geotropism) is a coordinated process of differential growth by a plant in response to gravity pulling on it.
Explanation:
Answer:
Geotropism
Explanation:
The coordinated process of differential growth or response to the gravity pulling by a plant is known as geotropism or gravitropism. Plants grow towards the direction of gravity pull and the stems of the plant show negative stimuli and grow upwards in the opposite direction. The differential in the roots of the plant growing towards the gravity involves changes in the cell expansion. The gravity sensed in the root tip which is then relayed to the elongation zone so that growth direction can be maintained. The growth responses cause changes in the orientation and allows the roots to grow in the same direction as that of the gravity. Roots bend in response to gravity due to a regulated movement of the auxin plant hormone. Auxin is also known as polar auxin transport. The stems respond as a negative stimulus to geotropism orienting its position to maximize sunlight contact.