Geotropism: Root Responses to Gravity
Geotropism (or gravitropism) is the growth response of a plant to the pull of gravity, ensuring roots grow deep into the soil.
How does auxin affect the growth of cells in a root?
What is Geotropism: Root Responses to Gravity?
"Geotropism is the growth of a plant in response to the force of gravity."
Which answer best completes the statement? ____ involves giving a mother FSH and LH to stimulate eggs
Choose the correct option to complete the statement. ____ is when blood vessels narrow to keep heat in
Which answer best completes the statement? FSH causes an egg to ____ in the ovary
Which answer best completes the statement? ____ is a waste product formed from the breakdown of proteins
Gravitropic Response
Roots are positively geotropic, meaning they grow towards the direction of gravity.
In a horizontal root, auxin accumulates on the lower side due to gravity.
Unlike shoots, high auxin concentration in roots inhibits cell elongation.
The cells on the upper side grow faster, causing the root to bend downwards.
A common exam trick is to ask how a clinostat affects geotropism; it cancels out gravity by rotating the plant.
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