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bija089 [108]
1 year ago
11

The circularly arranged smooth muscle fibers in the highlighted structure perform which function?

Biology
1 answer:
puteri [66]1 year ago
3 0

Answer:constriction of pupil

Explanation:the circularly arranged smooth muscle fibers in the highlighted structure ie the iris causes constriction of the pupil.

The iris basically has ciliary muscles that control Lens shape ,this happens when the ciliary muscles under the signal of the parasympathetic nervous system contract leading to the constriction of the pupil and when these muscles relax then dilation of the pupil will occur

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The large size of the daughter oocyte after meiosis II results from the uneven distribution of the cytoplasm, which allows the z
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Answer:

True

Explanation:

Oogenesis includes the formation of one egg cell from a single oocyte or egg mother cell. The diploid primary oocytes in the ovaries enter into the first meiotic division and form a haploid secondary oocyte and a haploid first polar body. After fertilization, the secondary oocytes complete the meiosis-II and forms one large ovum and a second polar body. The ovum formed by meiosis-II is much larger than the second polar body due to the unequal distribution of cytoplasm during meiosis-II. This imparts enough amount of cytoplasm in the zygote to support the mitosis without any cell growth.

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Ram is a farmer who wants to grow tomatoes on his field. Give him four suggestions so that he can grow a healthy crop .You can t
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Answer: start seeds as early as mid-January

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explanation:

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Why are the cells of the alveoli so flattened?
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Gas exchange occurs in the alveoli of the lungs and each is made from a single layer of flat cells, Many alveoli in the lungs, so a large surface area for exchangement of C02 and O2. They are surrounded by a network of capillaries and oxygen diffuses out of them via the alveolar epithelium to the hemoglobin.

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Explain how a streamlined, smooth, nearly hairless body is a beneficial adaptation for marine animals.
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Most of the marine animals have a stream lined body, which means, they have a sharp and pointed at the front. The pointed front of the organism allow to cut the resistance of the water. In case, the body is not pointed at the front and it is blunt, the water current and flow would resist the movement of the organism further. So, for the locomotion purpose, it is important to have a streamlined body. Further smooth and hair less body also decrease the resistance during the movement in the water.

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A maternal effect can cause the offspring phenotype ratio to depart from that of classic Mendelian inheritance. In a species of
Luda [366]
<h2>Maternal effect</h2>

Explanation:

In maternal effect the phenotype of the progeny is decided by the genotype of the mother

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  • This effect is observed in Drosophila

In the given question both male and female have brown eyes with Nn genotype,phenotype of the offspring will be decided by the genotype of mother(Nn) hence despite of having recessive genotype(nn) all the offsprings will show brown eyes

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2 years ago
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