science
Grade-4-
Easy
Question
The following picture shows _____________ in plants.
- Hydrotropism
- Geotropism
- Phototropism
- None of the above
Hint:
The plant is responding to light.
The correct answer is: Phototropism
The correct option is c)Phototropism.
- Phototropism is the growth of organisms in response to light stimuli. Phototropism is most commonly found in plants, but can also occur in other organisms such as fungi
- . Plant cells furthest from light contain hormones called auxins that react when phototropism occurs. This causes plants to have elongated cells on the side furthest from light.
- Phototropism is one of many plant tropisms, or movements in response to external stimuli.
- Growing towards the light source is called positive phototropism and growing away from the light is called negative phototropism.
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