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3 years ago

In humans, the placenta is essential to the embryo for

Biology

1 answer:

lianna [129]3 years ago

4 0

Question options:

(1)nutrition, excretion, and reproduction

(2)respiration, nutrition, and excretion

(3)movement, reproduction, and nutrition

(4)coordination, movement, and growth

Answer:

(2)respiration, nutrition, and excretion

Explanation:

The placenta between the mother and the fetus has three main function.

- Attach the fetus to the uterine wall.

- Provide nutrients to the fetus.

- Allow the fetus to transfer waste products to the mother's blood.

The placenta refers to an organ in the uterus of mother that is responsible for nourishing and maintaining the fetus through the umbilical cord. The placenta also has many other functions but primarily it plays critical roles in the nutrition, respiration and excretion of the fetus. Its other functions include: production of hormones, production of immunity for the fetus for prevention from infections, etc.

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In pea seeds yellow color is dominant to green color and a round shape is dominant to a wirkinkled shape a dihybrid cross betwee

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Answer:

See below.

Explanation:

Let the allele for colour be C (c) and the allele for shape be S (s).

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crossing the two;

CCSS x ccss = CcSs (yellow colour with round seeds)

All the F1 offspring are yellow with round seeds (CcSs).

Selfing CcSs to produce F2 generation results in:

9 Yellow, round seeded

3 Yellow, wrinkle seeded

3 Green, round seeded

1 Green, wrinkle seeded.

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Answer:

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