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4 years ago

Which describes the missing step?

Biology

1 answer:

Nimfa-mama [501]4 years ago

6 0

Answer:

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

Explanation:

The steps listed by Xavier are:

Water is drawn in trough pores and enters the central cavity.
Food is filtered and digested.
Water leaves trough an opening at the top of the body.

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.

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.

Learn more:

Sponge structure brainly.com/question/11256747

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Some roses have streaks of pink and streaks of red to give a striped effect to

zmey [24]

Answer:

The correct answer is - incomplete dominance is the correct answer.

Explanation:

Incomplete dominance is the inheritance where there is no complete dominance takes place and where is the mix of both alleles trait mixes or blends in the offspring.

The red or purple cross with white plants flower cross the incomplete inheritance takes place to produce a striped effect to their petals.

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3 years ago

The map shows tectonic plates on Earth. The red arrows indicate which plates are converging, diverging, or transforming. Identif

Sliva [168]

Answer: Bottom Left Square.

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3 years ago

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As you are walking through a forest in Ohio, you notice that there are many large, mature trees. But you also notice patches of

Bad White [126]

Answer:

Transition

Explanation:

Secondary succession occurs when the existing vegetation is removed by some disturbances and soil is already present in the region to support the growth of new species. During succession, the early species are being replaced by later successional species.

In the given example, the forest has patches of early species and later species. This means that the forest is in the transition period of succession where early species were not completely replaced by the new species. Once the early species will be removed and the climax community develops, the forest has reached the final stage of succession.

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3 years ago

A group of students wants to study the structures of animals in the desert. One question they should ask is-

Brrunno [24]

From studies and research, I believe the proper question would be:

"How do the animals satisfy their need for water?" or "How long do the animals live?"

Explanation 1:

When studying the desert, asking "Can you buy the animals in pet stores?" is not going to help you find information about the desert because it is not a question to get information about the desert, only information if you just buy it at your local pet shop.

Explanation 2:

Asking "How many offspring do the animals have?" does help us learn about animals, but we are trying to find information on the structure of the desert in which the animals live in. We are not looking for how many children the animals will have because it doesn't fully relate to the question we would be asking.

Side Note: Offsprings mean children.

Hope this helps!

~Hocus Pocus

5 0

3 years ago

Hypothesis: If the porosity of three soils are tested, then red clay soil will have the lowest porosity.

NNADVOKAT [17]

Answer:

This question is incomplete, based on the given hypothesis, the question is asking to identify the variables (independent and dependent) of the experiment.

*Independent variable: DIFFERENT SOILS

*Dependent variable: Porosity

Explanation:

- Independent variable is the variable that is manipulated or changed by an experimenter in order to effect a response in another variable. In this question, three different soils were used, hence, the SOIL is the independent variable.

- Dependent variable is the variable that responds to changes made to the independent variable. It is the variable being measured in an experiment. In this case, the porosity is the variable being measured, hence, it is the dependent variable.

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3 years ago