Form 3 Science Chapter 1.3

Plants can detect 4 types of stimuli, which are _____. (>1)<br />

• light
• water
• gravity
• touch
• sound

There are 2 types of response of plants, which are _____. (>1)<br />

• tropism
• nastic movement
• return movement

The part of a plant which grows towards a stimulus is known as _____.

• tropism positive
• tropism negative
• positive reaction
• negative reaction

Tropism reaction towards light is _____.

• phototropism
• geotropism
• hydrotropism
• thigmotropism

Tropism reaction towards gravity is _____.

• geotropism
• phototropism
• thigmotropism
• hydrotropism

Tropism reaction towards water is _____.

• hydrotropism
• geotropism
• phototropism
• thigmotropism

Tropism reaction towards touch is _____.

• thigmotropism
• hydrotropism
• geotropism
• phototropism

Shoots and leaves grow towards the direction of light.

• Phototropism positive

• Phototropism negative

• Hydrotropism positive

• Hydrotropism negative

Roots grow towards deep into the soil.

• Geotropism positive

• Geotropism negative

• Thigmotropism positive

• Thigmotropism negative

Shoots of plant grow upwards although the pot is placed upside down.

• Geotropism negative
• Geotropism positive
• Hydrotropism positive
• Hydrotropism negative