Question

The root of the plant is __________.i) positively phototropic but negatively geotropicii) positively geotropic but negatively phototropiciii) negatively phototropic but positively hydrotropiciv)negatively hydrotropic but positively phototropica) (i) and (ii)b) (ii) and (iii)c) (iii) and (iv)d) (i) and (iv)

Answer 1

"A plant's response to water sources is known as hydrotropism. Hydrotropism caused by the hormones of plants can be a positive or a negative response.

The root of the plant is grown away from light source and response to the water source.

Therefore, the root system of a plant is negative to phototropic but positive to hydrotropic.

The root of the plant would grow down into the soil and growth response is away from the light.

Therefore, the root of the plant is positive to geotropic but negative to phototropic.

Correct option: b"