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Stolb23 [73]
3 years ago
11

Compare and contrast the roundworm body structure with those of a flatworm and anannelid.​

Biology
1 answer:
sleet_krkn [62]3 years ago
8 0

Answer:

A flatworm has a thin, dorsoventrally flattened body. ... The gliding locomotion of a flatworm is powered by many tiny cilia on the outer surface of its body. Roundworms, on the other hand, have longitudinal muscles (oriented lengthwise down the worm) that they contract to bend their bodies in a thrashing motion.

Explanation:

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Lesson Quiz 12.4 Meiosis: For each missing word or phrase circle the choice that correctly completes the sentence
Deffense [45]

Answer:

Explanation:

Each of the following words that are in bold correctly completes the sentence so that it makes sense, is factual, and is correctly written in English.

Lana concludes that all of the deer in a forest are members of the same species because they look alike and breed with one another.

She observes how the deer population interacts with trees, wolves, and other living things of the forest community.

7 0
3 years ago
Definition: These help us decide whether something is living or non-living.
tankabanditka [31]

Answer:

I am pretty sure you are asking for the correct words which for living is biotic and for non living it is Abiotic

Explanation:

6 0
4 years ago
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A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the followin
faust18 [17]

Answer:

Collagen genes.

Explanation:

Phylogenetics helps to study the evolutionary relationship among the different group of organisms. The different characteristics like DNA sequences, mitochondria sequences can be used for the construction of phylogeny tree.

Collagen genes can be used to study the evolutionary relationship as mammals contains nearly 30% of total protein. The collagen gene shows the most of the conserved sequences among the different group of organisms and shows the most recent evolved characters in vertebrates.

Thus, the correct answer is collagen genes.  

3 0
4 years ago
Answer The Following Questions:
Vanyuwa [196]
  1. Yes. Upper-layer skin cells and the cells in the front surface of the eyes get a significant amount of oxygen directly from the air rather than from the blood. Human bodies have a huge demand for oxygen. As a result, the oxygen that is able to passively diffuse into the body directly from the air is not nearly enough to run the whole body. Fortunately, we have lungs that can actively pull in oxygen and transfer it to the blood, allowing the body to transport oxygen to the cells by using the blood like a fleet of delivery trucks. Most of our cells rely on the blood delivery service. However, the cells in the outer layers or our skin and eyes are in direct contact with the atmosphere and can efficiently get their oxygen right from the air.
  2. Yes, there are nuclear reactions constantly occurring in our bodies, but there are very few of them compared to the chemical reactions, and they do not affect our bodies much. All physical objects are made of molecules. A molecule is a series of atoms linked together by chemical (electromagnetic) bonds.
  3. Photon wave phase can also not be directly detected by humans but can be detected by machines called interferometers. Phase information is often used to determine the flatness of a reflecting surface. In summary, humans can indeed see photons. Humans can see all of the properties of photons except for spin and wave phase.
5 0
3 years ago
Read 2 more answers
En la ÓSMOSIS, un disolvente (a menudo agua) se mueve desde una zona de baja concentración de solutos hacia una zona de alta con
weeeeeb [17]

Answer:

C

Explanation:

This is placing a cell in hyper tonic solution.Therefore, the water potential of the cells is higher than the environment. Hence it lose water to the environment which has a  lower water potential, but higher solute potential.

Therefore the loss of fluid by the cell leads to shrinking of the cytosol and it containing organelles. Later the cells collapse.

<u>Spanish</u>

Esto es colocar las células en una solución hipertónica. Por lo tanto, el potencial hídrico de las células es mayor que el del medio ambiente. Por lo tanto, perder agua al medio ambiente reducirá el potencial hídrico, pero aumentará el potencial de soluto.

Por lo tanto, la pérdida de líquido por parte de la célula conduce a la contracción del citosol y que contiene orgánulos.

4 0
4 years ago
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