shark reproduction & rays Flashcards
(6 cards)
1
Q
how are eggs fertilized in sharks?
A
internally
2
Q
what is oviparous reproduction?
A
eggs hatch outside of mothers body
3
Q
what is ovoviviparous reproduction?
A
young hatch in the mother and then birthed
4
Q
what is viviparous reproduction?
A
young develops in uterus prior to birth, life birth
5
Q
how does the reproductive tract empty?
A
with the excretory system and digestive tract into the cloaca
6
Q
what are the characteristics of rays?
A
flattened shape, large pectoral fins to propel through water, tails have venomous barbs
