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Nostrana [21]
4 years ago
13

In phototropism, give examples of a positive and a negative response in a plant.

Biology
2 answers:
Ghella [55]4 years ago
8 0

Answer:

Phototropism refers to the movement of of plant body or parts towards or away from the light. There are two types of phototropism i. e. positive phototropism and negative phototropism.

In positive phototropism, the parts of plant body moves toward light. Movements of radical in the upward direction after seed emergence is the example of positive phototropism.

In negative phototropism, the body part of plant moves away from the light. Roots are the example of negative phototropism.

guapka [62]4 years ago
5 0

Answer:

Stem tips usually move towards the source of light. That's an example of a positive response. While the roots usually move away from it: which is a negative response.

Cells expand less on the lit side and expand more on the shady side of the plant.

Explanation:

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The evidence that paleobotanists look for that indicates the movement of plants from water to land is the possession of waxy cuticle to decrease evaporation from leaves.

<h3>What are some adaptations of plants on land compared to water?</h3>

Plants possess various adaptive features which enables them to survive on land or in water.

Plants that are found in water are known as aquatic plants. They possess features which enable them to get rid of excess water as well as to stay afloat on water. For example, their leaves are waxy to enable them remain afloat.

Plants found on land are terrestrial plants and possess features that enable them survive on land. They possess features which prevent excessive water loss such as waxy cuticle.

Therefore, the evidence that paleobotanists look for that indicates the movement of plants from water to land is the possession of waxy cuticle to decrease evaporation from leaves.

In conclusion, plants show adaptations as they moved from water to land.

Learn more about adaptations in plants at: brainly.com/question/13052054

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