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olga nikolaevna [1]
2 years ago
15

A. Unlike true jellies, this class is equipped with as many as two dozen "true" eyes paired around

Biology
1 answer:
Harrizon [31]2 years ago
8 0

Answer:

Cubozoans or the box jellies

Explanation:

These cubozoan or the box jellies is the second class of cnidaria comprising the classic jellyfish. The first class are the Scyphozoans, or "true jellies. The box jellies have as many as two dozen eyes that are not primitive, light-sensing patches of cells but are true eyeballs that are made up of lenses, retinas and corneas. These eyes are paired around the circumference of their bells giving them a 360-degree range of vision. They function in detection of prey and predator and also mainly to maintain the box jelly orientation in water.

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andriy [413]

Answer:

homologous structures

Explanation:

Homologous structures are organs or skeletal elements of animals and organisms that, by virtue of their similarity, suggest their connection to a common ancestor. These structures do not have to look exactly the same, or have the same function.

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2 years ago
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mr Goodwill [35]

Answer:

a

Explanation:

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Degger [83]
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3 0
3 years ago
In the experiment determining the parental genotype of plant seedlings from a monohybrid cross, if the dominant color was green
eimsori [14]

Answer:

cc × cc

Explanation:

This question involves a single gene coding for plant seedling. The green allele (C) is dominant over the white allele (c). This means that the green allele will mask the phenotypic expression of the white allele in a heterozygous state (Cc).

In this experiment where plate 1 only contained white seedlings instead of all green, this illustrates that all the offsprings were recessive. This is because the parental genotypes were both recessive for the color trait i.e. cc.

Note that, the recessive trait can only be expressed when the recessive alleles are present in a gene. Therefore, the parental genotype would have been cc × cc, in order to give rise to all offsprings with the recessive trait (white colour).

7 0
2 years ago
If the efficiency of a gasoline engine is 25%, what happens to the missing 75% of the energy in the fuel?
hram777 [196]

The 75% energy which does not do any useful work gets dissipated as thermal energy in gasoline engines.

Explanation:

The efficiency of any engine like gasoline engine is the ratio of work done in contrast to heat or energy provided.

Gasoline engines are internal combustion engine. The thermal efficiency is calculated of these engines.

work done or efficiency= \frac{work done}{heat absorbed}

         or heat absorbed is divided by heat used in doing work

the friction and in other forms heat gets lost.

In gasoline engine about 65 to 75 % heat gets emitted without any useful work done. The heat gets lost in friction, air turbulence, noise and work input to turn on the engine. After the dissipation of heat in it only 25% is used up by vehicle having gasoline engines.

5 0
3 years ago
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