Multiple Choice
Which of the following was probably the least important factor in bringing about the Cambrian explosion?
A) the emergence of predator-prey relationships among animals
B) the accumulation of diverse adaptations, such as shells and different modes of locomotion
C) the movement of animals onto land
D) the origin of Hox genes and other genetic changes affecting the regulation of developmental genes
E) the accumulation of sufficient atmospheric oxygen to support the more active metabolism of mobile animals
Correct Answer:
Verified
Correct Answer:
Verified
Q5: Whatever its ultimate cause(s), the Cambrian explosion
Q6: Which statement is most consistent with the
Q7: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5463/.jpg" alt=" The previous
Q8: What do animals as diverse as corals
Q9: At which developmental stage should one be
Q11: Which of the following is (are)unique to
Q12: Arthropods invaded land about 100 million years
Q13: The last common ancestor of all animals
Q14: Which distinction is given more emphasis by
Q15: A student encounters an animal embryo at