A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to __________

(a)

water and light

(b)

water and minerals

(c)

gravity and water

(d)

light and gravity

The chemical reaction occurs during photosynthesis is ________. 

(a)

CO₂ is reduced and water is oxidized

(b)

water is reduced and CO₂ is oxidized

(c)

both CO₂ and water are oxidized

(d)

both CO₂ and water are produced

The bending of root of a plant in response to water is called _________ 

(a)

thigmonasty

(b)

phototropism

(c)

hydrotropism

(d)

photonasty

The plant part which exhibits negative geotropism is __________.

(a)

root

(b)

stem

(c)

branch

(d)

leaves

Dandelion flowers open the petals in bright light during the day time but close the petals in dark at night. This response of Dandelion flowers is called ___________.

(a)

geonasty

(b)

thigmonasty

(c)

chemonasty

(d)

photonasty

Chlorophyll in a leaf is required for __________.

(a)

photosynthesis

(b)

transpiration

(c)

tropic movement

(d)

nastic movement

The common name of Mimosa pudica is____________

(a)

sun flower

(b)

Touch me not

(c)

Moon plant

(d)

Thozhukanni

Desmodium gyrans is commonly known as_______________.

(a)

Money plant

(b)

Rose plant

(c)

Telegraph plant

(d)

Lilly plant.

The tip of the shoot is known as_______________.

(a)

Choleoptile

(b)

Colon

(c)

Coleorhiza

(d)

Collar.

The plant which respond to gravity is termed as_________________.

(a)

Gravitropism

(b)

Thermotropism

(c)

Seismotropism

(d)

Phototropism