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solong [7]
3 years ago
12

What must happen for the pupil of the eye to dilate?

Biology
2 answers:
iragen [17]3 years ago
7 0
Your correct answer is A
Ad libitum [116K]3 years ago
4 0
Stimulation of the sympathetic nervous system is required
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What is the advantage of radial symmetry for sessile animals such as hydras and bilateral symmetry for mobile animals such as pl
Juliette [100K]

Answer:

- Radial symmetry is advantageous because sessile animals can "sit down", take food, or sense harmful environmental conditions from different directions.  

- Bilateral symmetry allows motile animals to move straight forward.

- The major evolutionary advantages of bilateral symmetry include cephalization, the formation of a head and tail area and a more directional motion.

Explanation:

Radial symmetry is advantageous for sessile organisms since it enables the uniform distribution of the sensory receptors around the body. In consequence, sessile organisms can react to environmental stimuli from every direction. On the other hand, bilateral symmetry allows motile organisms the arrangement of a specialized nervous system from the anterior end of the organism (i.e., the 'head'). Moreover, another important advantage of bilateral symmetry is the ability to equalize environmental pressures on both sides of the body, thereby enabling a rectilinear motion.

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3 years ago
Sexually reproducing organisms pass on genetic information as a
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i will not answer LOL

Explanation:

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2 years ago
Day and night are caused by A. the rotation of the Sun on its axis. B. the Sun completing a full orbit around the Earth. C. the
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Your answer is D. Because the Earth rotating on it's axis causes Day and Night
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3 years ago
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In terms of natural selection, what is the best description of an organism that is fit?
kodGreya [7K]

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Those organisms are fit which has the ability to survive in harsh climatic condition and transfer their traits to the next generation through the process of reproduction.

Explanation: Fit means they are strong and compete with other organisms for food, shelter and other survival items. Those organisms which are not fit could not survive in harsh environmental conditions and removed from that ecosystem.

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3 years ago
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Explain why it is an advantage to have breathing controlled by a reflex
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