BIOMOLECULES AND ENZYMES

BIOLOGY

HORMONES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Roots growing down into the earth is an example of ____
A
phototropism
B
geotropism
C
thigmotropism
D
None of the above
Explanation: 

Detailed explanation-1: -Positive geotropism is when a part of a plant grows towards gravity. In response to gravity, the roots of a plant grow towards the earth and they set an example of positive geotropism whereas the stem grows away from the earth making it an example of negative geotropism.

Detailed explanation-2: -The movement of plant parts in response to the direction of gravity is known as geotropism. The growth of plant roots is an example of geotropism as it grows towards the direction of gravity.

Detailed explanation-3: -a The movement of plant part in response to gravity is called geotropism. Example – Roots grow towards gravity. b If the plant part moves towards the direction of gravity it is called positive geotropism. Example – Roots.

Detailed explanation-4: -Plants responses to gravity: when the stem grows against the force of gravity, this is known as a negative geotropism. when a root grows in the direction of the force of gravity, this is known as a positive geotropism.

Detailed explanation-5: -Geotropism is a type of tropism where plants show some growth in response to gravity. Roots growing downwards is an example of geotropism.

There is 1 question to complete.