Honors Tri. 3 Week 4 Practice: Embryology

What is an embryo?

• A genetic trait

• A type of cell division

• A fully developed organism

• An organism in its earliest stages of development

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NGSS.HS-LS1-4

What happens to the tail-like structure in human embryos?

• It develops into limbs

• It becomes the backbone

• It disappears before birth

• It grows into a functional tail

What are homologous features?

• Anatomical features indicating a common ancestor

• Structures that perform the same function in different species

• Unique traits found in each species

• Features that appear only in adult organisms

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NGSS.MS-LS4-2

Why do scientists study embryos?

• To develop new medicines

• To learn about human anatomy

• To find similarities between species

• To understand genetic diseases

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

How much does an elephant embryo weigh at the start of its development?

• 100 grams

• About 10 kilograms

• Less than a gram

• 1 kilogram

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NGSS.HS-LS1-4

What do the changes in an embryo's physical structures indicate?

• The embryo's intelligence

• Evolutionary development

• The gender of the embryo

• The health of the embryo

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NGSS.MS-LS4-3

What do pharyngeal arches develop into in fish?

• Fins

• Gill structures

• Lungs

• Scales

What evidence do pharyngeal arches provide?

• That evolution does not exist

• That mammals can breathe underwater

• That vertebrates share a common ancestor

• That all animals have gills

Tags

NGSS.MS-LS4-2

Do more closely related species share more or fewer homologous features?

• More

• Fewer

• The same number

• None at all

Tags

NGSS.MS-LS4-2

Which of the following is a reason humans do not have tails?

• Lack of necessity

• All of the above

• Due to a genetic mutation

• Because of evolution

Tags

NGSS.MS-LS4-2