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timama [110]
3 years ago
9

During the development of a multicellular organisms, which cells are totipotent? Select all of the answers that apply

Biology
1 answer:
maks197457 [2]3 years ago
5 0

Answer:

A . the fertilized egg and the cells produced by the first few cell divisions

Explanation:

Totipotent cells are those cells in developmental stage of multicellular organisms which can give rise to any part of the organism. It can give rise to both the placenta and the embryo.

After the fertilization, the cells produced in first few divisions are totipotent. This stage is also called as morulla stage. Once blastocyst stage is reached, totipotency is lost. All the cells of blastocyst are not totipotent. The inner cell mass of blastocyst is pluripotent which means it can give rise to the entire embryo except placenta. The trophoblast layer of blastocyst can only produce placenta.

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Answer:

C. Compaction

Explanation:

Chyme enters from the small intestine into the large intestine. In the large intestine, chyme becomes solid or semisolid as the water is absorbed from it. Absorption of excess water from chyme to convert it into the feces in the large intestine is called compaction. Feces consist of water, inorganic salts, unabsorbed digested materials, and indigestible parts of food.  During compaction, enough water is absorbed and this makes large intestine one of the important organs in maintaining the body’s water balance.

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3 years ago
Question 1 of 10
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Answer:

B. He has no E alleles.

Explanation:

In order for the boy to have an attached earlobes phenotype, he must have no E alleles, because the E is dominant. So his genotype must be ee. If he has even just a single E allele (like Ee) he will have detached earlobes, because the dominant trait will mask the expression of the recessive trait.

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3 years ago
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murzikaleks [220]

Answer:

B

Explanation:

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Scientist claims that Elysia chlorotica, a species of Sea slug, is capable of photosynthesis. which of the following observation
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Answer:

The correct answer is - B) Elysia Chlorotica grows when exposed to light in the absence of other food sources

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If placing Elysia Chlorotica in presence of the food sources in the presence or absence of light it still grows as normal. However, if placing in the light in absence of the food sources it should not grow if it is not able to perform photosynthesis but it does which means there is a photosynthesis process also involve in the Elysia.

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