$$Physical\ Ability = Initial\ Ability - (Decline\ Rate \times Age)$$

$$Body\ Size = Growth\ Rate \times Time$$

Question 1

Which of the following correctly lists the three main stages of prenatal development in order?

Accepted Answer

Germinal, Embryonic, Fetal

Question 2

During which prenatal stage does implantation of the blastocyst typically occur?

Accepted Answer

Germinal stage

Question 3

A teratogen is best defined as:

Accepted Answer

A substance or factor that can cause harm to a developing fetus

Question 4

Which of the following is NOT considered a common teratogen?

Accepted Answer

Testosterone

Question 5

If a child begins crawling at 9 months and walking at 13 months, which principle of motor development does this illustrate?

Accepted Answer

Sequential progression

Question 6

Which equation best represents the relationship between physical activity and muscle tone in adulthood?

Accepted Answer

$$Muscle\ Tone \propto Physical\ Activity$$

Question 7

Which of the following statements about puberty is accurate?

Accepted Answer

Puberty involves the release of hormones such as testosterone and estrogens.

Question 8

A researcher observes that premature births decreased during coronavirus lockdowns. Which type of research question does this best illustrate?

Accepted Answer

Correlational observation

Question 9

Which of the following is a primary sex characteristic?

Accepted Answer

Menarche

Question 10

If an individual experiences a decline in coordination and speed after their physical peak, which stage of development are they most likely in?

Accepted Answer

Adulthood

Question 11

Which formula best describes the relationship between age and physical decline?

Accepted Answer

$$Physical\ Ability = Initial\ Ability - (Decline\ Rate 	imes Age)$$

Question 12

Which of the following motor milestones typically occurs first in infants?

Accepted Answer

Sitting up

Question 13

A child who is able to stand but not yet walk is most likely at which motor development stage?

Accepted Answer

Standing

Question 14

Which of the following best explains why physical activity is important for older adults?

Accepted Answer

It can slow the decline in muscle tone and flexibility.

Question 15

Which of the following is a secondary sex characteristic?

Accepted Answer

Breast development

Question 16

If a child is exposed to lead during the embryonic stage, what is the most likely outcome?

Accepted Answer

Increased risk of birth defects and developmental issues.

Question 17

Which of the following best describes the cephalocaudal principle of development?

Accepted Answer

Development proceeds from head to toe.

Question 18

A child who can run but cannot yet jump is most likely at which motor milestone?

Accepted Answer

Running

Question 19

Which of the following best explains the impact of thalidomide exposure during pregnancy?

Accepted Answer

It can cause severe limb deformities in the developing fetus.

Question 20

Which equation best represents the relationship between body size and physical growth in childhood?

Accepted Answer

$$Body\ Size = Growth\ Rate 	imes Time$$

Physical and Motor Development Across the Lifespan

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