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Tems11 [23]
3 years ago
14

Define thigmotropism, phototropism, and gravitropism and give an example of each​

Biology
1 answer:
Rufina [12.5K]3 years ago
8 0

Answer:

a) Thigmotropism

b) Phototropism

c) Gravitropism

Explanation:

A) the turning or bending of a plant or other organism in response to a touch stimulus. example:  the folding movement of the Mimosa pudica leaflets, can be considered as an example of thigmonastism.

B) the orientation of a plant or other organism in response to light, either towards the source of light ( positive phototropism ) or away from it ( negative phototropism ).example: Sunflower is a highly phototropic plant. They grow towards the sun and are also seen tracking the movement of the sun throughout the day. That is, the flower keeps changing its direction with the movement of the sun. Sunflower requires more light for its growth and survival.

C) The gravity-directed growth process, called gravitropism, dictates upward shoot growth to ensure a proper positioning of the leaves for efficient photosynthesis and gas exchange. example: tree has fallen over and due to gravitropism exhibits this arched growth.  

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Mnenie [13.5K]

Answer:

As mammals grow, they stop producing lactase.

Explanation:

Mammals consume their mother's milk during the first stage of life. Milk has a sugar called lactose. Lactose is a disaccharide formed by the union of one molecule of glucose and another of galactose. To absorb it our digestive system releases an enzyme (lactase) that breaks the union between galactose and glucose. As mammals grow, they stop producing this enzyme, which makes lactose indigestible. As a result, ingesting milk may cause  diarrhea, gas and bloating.

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3 years ago
Explain why an increase in precipitation and in the number of nearby factories has a greater impact on the occurrence of the mar
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3 years ago
Kce-avvh-mcf<br><br>join anyone<br><br><br>kce-avvh-mcf​
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3 years ago
3.08 quiz three representative organisms
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The correct answers are "Eukaryota, Archaea and Bacteria".
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When ten or more pre-synaptic neurons conduct impulses to five or fewer post-synaptic neurons, the conduction pattern is said to
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When ten or more pre-synaptic neurons conduct impulses to five or fewer post-synaptic neurons, the conduction pattern is said to be <u>convergent</u>.

A neuron in such a network can take information from numerous other neurons through convergence. Inhibitory interneurons are activated by presynaptic cells, but instead they reduce nearby cells inside the network.

Synaptic divergence refers to the dispersion of synapses from such a single neuron onto several postsynaptic partners as well as partner kinds, while synaptic convergence refers to being affected by having neuronal cell kinds delivering input around on a shared postsynaptic partner.

Multiple presynaptic cells send convergent information to a single postsynaptic neuron.

To learn more about neurons, here

brainly.com/question/10877140

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