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

(a)

thigmonasty

(b)

phototropism

(c)

hydrotropism

(d)

photonasty

Desmodium gyrans is commonly known as_______________.

(a)

Money plant

(b)

Rose plant

(c)

Telegraph plant

(d)

Lilly plant.

Mimosa pudica is also known as__________________.

(a)

Nepenthes

(b)

Telegraph plant

(c)

Dancing plant

(d)

Thotta Surungi

The tip of the shoot is known as_______________.

(a)

Choleoptile

(b)

Colon

(c)

Coleorhiza

(d)

Collar.

The shoot system grows upward in response to ___________.

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Light

__________ is positively hydrotropic as well as positively geotropic.

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Root

The green pigment present in the plant is __________

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chlorophyll

The leaves of __________closes on touching.

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Mimosa pudica

Helianthus annus follows the path of the sun from______________.

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dawn to dusk

The response of a part of plant to the chemical stimulus is called phototropism.

(a) True

(b) False

Shoot is positively phototropic and negatively geotropic.

(a) True

(b) False

Scientific term used to represent the bending of roots towards water is called geotropism.

(a) True

(b) False

The stalk of the Helianthus annus follows the path of the sun from dawn to dusk and during night it moves from west to east.

(a) True

(b) False

Plants can move on their own from one location to another

(a) True

(b) False

Desmodium gyrans was used by Charles Darwin for his experiment

(a) True

(b) False

Roots growing downwards into soil

(1)

Positive phototropism.

Shoots growing towards the light

(2)

Negative geotropism

Shoots growing upward

(3)

Positive geotropism

Roots growing downwards away from light

(4)

Negative phototropism