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Anonymous users2024-02-15Summary. The body wall of the earthworm is densely covered with capillaries, and the oxygen in the soil is first dissolved in the mucus on the body surface, then infiltrates into the body wall, and then enters the capillaries of the body wall The carbon dioxide in the body is also discharged from the body surface through the capillaries of the body wall, and the breathing of the earthworm depends on the body wall that can secrete mucus and always remain moist Vaseline is not breathable and breathable, so coating the earthworm body surface with a layer of petroleum jelly will affect the earthworm to breathe through the body wall and cause death
If you apply petroleum jelly to the surface of the earthworm, will the respiratory rate be increased.
The body wall of the earthworm is densely covered with capillaries, and the oxygen in the soil is first dissolved in the mucus on the body surface, then infiltrates into the body wall, and then enters the capillaries of the body wall The carbon dioxide in the body is also discharged from the body surface through the capillaries of the body wall, and the breathing of the earthworm depends on the body wall that can secrete mucus and always remain moist Vaseline is not breathable and breathable, so coating the earthworm body surface with a layer of petroleum jelly will affect the earthworm to breathe through the body wall and cause death
Is there anything else I need to know?
1) The earthworm breathes with a moist body wall, and breathes oxygen in the air During the experiment, gently rub the earthworm's body with a cotton ball moistened with water at any time, the purpose of which is to keep the earthworm's body surface moist and maintain its normal breathing (2) The earthworm's body is composed of many body segments, which makes it move flexibly Gently stroking back and forth on the ventral surface of the earthworm's body with your fingers, there will be a rough and uneven feeling, this is because you touch the bristles, which are the locomotor organs of the earthworms. Earthworms wriggle through the stretching of body muscles and the coordination of bristles On smooth glass, the bristles cannot hold and support the body, so the speed of movement on a smooth glass plate is slower than on rough paper (3) At one end near the ring band is the front end of the earthworm, which is lighter in color and smooth, and looks like a thick ring
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Anonymous users2024-02-14Earthworms breathe with a moist body wall, breathing oxygen in the air, oxygen is first dissolved in the mucus of the body wall, and then penetrates into the blood in the capillaries in the body wall, and the carbon dioxide in the blood is also excreted through the body wall After coating the earthworm body surface with a layer of petroleum jelly, petroleum jelly is impermeable and breathable, and the earthworm cannot obtain oxygen in the air through the body wall, so it will suffocate and die
So the answer is: death.
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Anonymous users2024-02-13Earthworms breathe with a moist body wall, breathing oxygen in the air, oxygen is first dissolved in the mucus of the body wall, and then penetrates into the blood in the capillaries in the body wall, and the carbon dioxide in the blood is also excreted through the body wall After coating the earthworm body surface with a layer of petroleum jelly, petroleum jelly is impermeable and breathable, and the earthworm cannot obtain oxygen in the air through the body wall, so it will suffocate and die
So the answer is: death.
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Anonymous users2024-02-12Answer] B Answer Analysis] Test Question Analysis: The body wall of the earthworm is densely covered with capillaries, and the oxygen in the soil is first dissolved in the mucus on the body surface, and then penetrates into the body wall, and then enters the capillaries of the body wall, and the carbon dioxide in the body is also discharged from the body surface through the capillaries of the body wall, and the breathing of the earthworm depends on the body wall that can secrete mucus and always maintain a moist body wall to complete. Therefore, choose B.
Test point: This question tests the breathing of earthworms, and the key to solving this question is to be proficient in understanding that earthworms breathe on a moist body surface.
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Anonymous users2024-02-11【Answer】A [Answer Analysis] Test Question Analysis: Earthworms breathe with a moist body wall, breathe oxygen in the air, oxygen first dissolves in the mucus of the body wall, and then penetrates into the blood in the capillaries in the body wall, and the carbon dioxide in the blood is also discharged from the body through the body wall After coating the earthworm body surface with a layer of petroleum jelly, petroleum jelly is impermeable and breathable, and the earthworm cannot obtain oxygen in the air through the body wall, and the breathing of the earthworm depends on the body wall that can secrete mucus and always keep it moist Therefore, it will suffocate to death, so choose: a
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