What was the most important adaptation of the reptiles and birds to life on land?
A) the shelled egg
B) the amniotic egg
C) the external egg
D) the impermeable egg
Correct Answer:
Verified
Q2: What completes the preparation of the uterus
Q3: What is the primary means of reproduction
Q4: In humans,which embryonic tissues are "indifferent"?
A)the vertebral
Q5: The immotile sperm develop motility in about
Q6: Some internally fertilized eggs develop and hatch
Q7: What are the only mammals that lay
Q8: What initiates the monthly preparation of the
Q9: What stimulates spermatogenesis?
A)Estradiol
B)FSH
C)LH
D)Testosterone
E)Progesterone
Q10: What stimulates secretion of testosterone by Leydig
Q11: What mammals retain their young for a
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