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Yuliya22 [10]
2 years ago
15

A "control group" is used in an experiment to

Biology
1 answer:
Deffense [45]2 years ago
4 0
Act as a baseline to compare your data to
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Which describes the missing step?
Nimfa-mama [501]

Answer:

The missing step is oxygen is removed from the water after step 3.

Explanation:

The steps listed by Xavier are:

  1. <em>Water is drawn in trough pores and enters the central cavity. </em>
  2. <em>Food is filtered and digested. </em>
  3. <em>Water leaves trough an opening at the top of the body.</em>

Porifera or sponges are aquatic, immobile invertebrates whose structure is saccular with an upper opening, the osculus.

Sponges absorb water through their pores, where the porocytes are found, and through flagellated cells -the coanocytes- the movement that allows the entrance of water to the spongocele or atrium is produced, in addition to the phagocytosis of organic elements.

Once the water is in the interior chamber of the sponges, the organic particles are phagocyted to be digested, and the oxygen is removed from the water, and passes through diffusion into the cell.  The waste products, as well as carbon dioxide, are released into the water that will be expelled through the osculus.

<u><em>In Xavier's list, the missing step is the removal of oxygen from the water, before it is expelled from the body of the sponge</em></u><em>.</em>

<em />

Learn more:

Sponge structure brainly.com/question/11256747

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3 years ago
Imagine a forest fire destroyed a forest. The forest will slowly reestablish itself, which is an example of what kind of success
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Which factor causes the shapes of saturated and unsaturated fatty acids to differ?
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Whether or not the fatty acid has double or single covalent bonds

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a fatty acid is unsaturated when a double bond helps hold it together, this type of fatty acid becomes bent as a result

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In cells, hydrogen peroxide is converted to water and oxygen through the activity of
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In cells, hydrogen peroxide is converted to water and oxygen through the activity of

<span>= ENZYMES</span>

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