6. list 3 ways whales are different from fish.

7. how many nasal passages do dolphins have?

8. what is located in a whale flipper?

9. do whales have leg bones?

10. what is embryology?

11. both human and whale embryos have __________________ and
___________________________________.

Question

6. list 3 ways whales are different from fish.

7. how many nasal passages do dolphins have?

8. what is located in a whale flipper?

9. do whales have leg bones?

10. what is embryology?

11. both human and whale embryos have __________________ and
___________________________________.

Accepted Answer

### Question 6
# Brief Explanations:
Whales are mammals, fish are not. So: 1. Whales breathe air (lungs), fish use gills. 2. Whales give live birth, fish lay eggs. 3. Whales have hair (at least in embryo), fish don't.
# Answer:
1. Whales breathe using lungs (take in air), while fish use gills to extract oxygen from water.
2. Whales give birth to live young, whereas most fish lay eggs.
3. Whales are warm - blooded, and most fish are cold - blooded.

### Question 7
# Brief Explanations:
Dolphins, being cetaceans like whales, have one nasal passage (blowhole - modified nasal passage).
# Answer:
Dolphins have one nasal passage (their blowhole is a single nasal passage).

### Question 8
# Brief Explanations:
Whale flippers have bones (similar to human arm bones: humerus, radius, ulna, etc.), connective tissue, and muscles, adapted for swimming.
# Answer:
Bones (similar in structure to the bones of a human arm, including a humerus, radius, ulna, and finger - like bones), along with muscles and connective tissue, are located in a whale flipper.

### Question 9
# Brief Explanations:
Whales (even though they are aquatic) are descendants of land - dwelling mammals. In their anatomy, they have vestigial leg bones (remnants from their evolutionary past) inside their bodies, though not external legs.
# Answer:
Yes, whales have vestigial leg bones (remnants of their evolutionary history as land - dwelling mammals) inside their bodies.

### Question 10
# Brief Explanations:
Embryology is the scientific study of embryos, their development from fertilization (or conception) through the various stages of growth and differentiation, including how cells, tissues, and organs form and develop in different organisms.
# Answer:
Embryology is the branch of biology that studies the development of an embryo from the moment of fertilization (or conception) through the various stages of growth and differentiation, including the formation and development of cells, tissues, and organs in organisms.

### Question 11
# Brief Explanations:
Human and whale embryos (both mammals) show evolutionary relatedness. They both have a tail (at some embryonic stage) and gill slits (pharyngeal slits, a primitive feature seen in early development, though function differs in adults).
# Answer:
Both human and whale embryos have a tail and gill slits (pharyngeal slits) at certain stages of development.

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