TROPISM

TROPISM DEFINITION-

GEOTROPISM

• The growth of a living organism in response to gravity
• There is positive tropism and negative tropism
• Positive tropism is the grow of an organism close to the earth
• Negative tropism is the growth of an organism away from the earth
• This ensures the plan will get adequate supply of water and mineral salts

PHOTOTROPISM

• The growth response of a living organism on response to light
• Positive phototropism is when the plant grows toward the sunlight
• Negative tropism is when the plant grows away from the light.
• Phototropism allows plants to be in a position to get sunlight for photosynthesis

HYDROTROPISM

• The growth of a living organism in response to water
• The way the root grows toward the water
• Negative hydrotropism is when the roots grow away from water
• Positive hydrotropism is when the roots grow towards water.
• Hydrotropism makes sure the plant gets enough water for photosynthesis

THIGMOTROPISM

• The growth of living organisms in response to touch/contact
• Positive thigmotropism is when the organism grows/clings to fence
• Negative thigmotropism is when the organism grows away from the touch

FIELD TRIP PICTURE

FIELD TRIP PICTURE

FIELD TRIP PICTURE

FIELD TRIP PICTURE