Reproduction & Development [Fetal Development]

Which diagram best illustrates an event

in sexual reproduction that would most

directly lead to the formation of a human

embryo?

• 
• 
• 
• 

One function of the placenta in a human

is to

• surround the embryo and protect it

  from shock

• allow for mixing of maternal blood

  with fetal blood

• act as the heart of the fetus,

  pumping blood until the fetus is

  born

• permit passage of nutrients and

  oxygen from the mother to the fetus

Which sections of the graph represent

structures affected directly by the

hormones shown?

• section A and section B, only

• section B and section C, only

• section A and section C, only

• section A, section B, and section C

In which structure do gametes usually

unite to produce a zygote?

• A

• G

• C

• F

Which substance usually passes in the

greatest amount through the placenta

from the blood of the fetus to the blood

of the mother?

• oxygen

• carbon dioxide

• amino acids

• glucose

Answer explanation

Carbon Dioxide would be passed through the placenta from the blood of the fetus to the blood of the mother.

Oxygen and Glucose would be passed through the placenta from the blood of the mother to the blood of the fetus.

Within which structure in the human body does specialization of parts of the developing baby take place?

• ovary

• uterus

• testes

• pancreas

Tags

NGSS.HS-LS1-4

The diagram below represents some stages of early embryonic development.

• meiosis

• fertilization

• mitosis

• evolution

Tags

NGSS.HS-LS1-4

Which phrase best describes a process represented in the diagram below?

• a zygote dividing by mitosis

• a zygote dividing by meiosis

• a gamete dividing by mitosis

• a gamete dividing by meiosis

Tags

NGSS.HS-LS1-4

Part of embryonic development in a species is illustrated in the diagram.

Which set of factors plays the most direct role in controlling the events shown in the diagram?

• genes, hormones, and cell location

• antibodies, insulin, and starch

• ATP, amino acids, and inorganic compounds

• abiotic resources, homeostasis, and selective breeding

Tags

NGSS.HS-LS1-4

If cell A has 46 chromosomes, how many chromosomes will most likely be found in each cell of stage G?

• 23

• 46

• 69

• 92

Tags

NGSS.HS-LS1-4