gravitropism

Question 1

is a plant’s ability to grow in response to gravity.
It’s a directional growth response.

Answer 1

Gravitropism

Question 2

what are the 2 types of Gravitropism

Answer 2

Positive Gravitropism and Negative Gravitropism

Question 3

a gravitropism that Roots grow downward.

Answer 3

Positive Gravitropism

Question 4

a gravitropism that shoots grow upward

Answer 4

Negative Gravitropism

Question 5

Plants use special structures inside their cells

Answer 5

amyloplasts

Question 6

store starch and act as gravity sensors

Answer 6

Amyloplasts

Question 7

are specialized amyloplasts that help detect gravity

Answer 7

Statoliths

Question 8

What Happens Inside the Plant?

Answer 8

Step 1: Amyloplasts move to the bottom of the cells.
Step 2: This triggers calcium signals in the plant.
Step 3: The plant releases a growth hormone called IAA (Indole-3-acetic acid).

Question 9

Plant Responses to Gravity

Answer 9

The release of IAA leads to changes in growth.
Roots grow downward (positive gravitropism).
Shoots grow upward (negative gravitropism).

Question 10

helps plants orient their growth.

Answer 10

Gravitropism

Question 11

act as sensors for gravity

Answer 11

Amyloplasts