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Nookie1986 [14]
3 years ago
10

What is the external stimulus in thigmotropism?

Biology
1 answer:
irina [24]3 years ago
6 0

Answer:

Thigmotropism is defined as a negative or positive directional response in a plant or part of a plant such as a plant organ, that is caused by an external stimulus such as touch or contact with any solid object. The factor that causes the stimulus is a hard surface that can change the direction of growth of the plant or part of the plant.  Hope this helps :)

Explanation:

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Concept 22.1: The Darwinian revolution challenged traditional views of a young Earth inhabited by unchanging species • Describe
kolezko [41]

Explanation:

  • Catastrophism is a theory developed by Georges Cuvier that states that natural history has been punctuated by catastrophic events that altered the way live developed. Gradualism is a theory that stipulates that changes of organic life and earth itself occur through gradual increments with transitions that are slow rather than periodic and rapid. Uniformitarianism suggests that the Earth's geological processes acted in the same manner in the same intensity in the past as they do in the present and that such uniformity is accountable for all the geologic change.
  • Jean-Baptiste de Lamarck's theory proposes a change through use and disuse when environments changed, organisms had to change their behavior to survive, if they began to use an organ more often it would increase their lifetime and their offspring will inherit this modified organ. As these organisms adapted, nature also drove them from simple forms to increasingly complex ones.

I hope you find this information useful and interesting! Good luck!

4 0
3 years ago
The structural unit of compact bone
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Answer:

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Explanation:

3 0
3 years ago
Which fact about fossils is MOST important to scientists who study evolution?
strojnjashka [21]

Answer:

Option C. The age of fossils can be determined by examining the rock strata in which fossils is found.

Explanation:

Fossils are really an amazing thing in determining the evolutionary patterns. It is very much helpful in criminology also.

6 0
2 years ago
Which of the following can wear away the solid rock of a cliff over time
Gemiola [76]

Answer: Item WE012003: Both a small stream and ocean waves can erode the solid rock of a cliff over time. Neither a small stream nor ocean waves can wear away the solid rock of a cliff.

Explanation: hope this helps!

7 0
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Which organ system is involved in protecting the body from both infectious and noninfectious diseases
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A. Immune system
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8 0
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