fertilization patterns Flashcards
fertilization will only occur if the sperm meets an egg of the same ______.
species.
a (1____) environment is required because the sperm and egg are both delicate and will (2. ___ ____).
- moist
- dry out
why do sperm need a wet environment?
to swim
what are the two types of fertilization?
internal and external.
in external, where do the sperm and egg meet?
outside bodies of both parents.
external fertilization is common in what kind of animals?
water dwelling animals.
internal fertilization is common in what?
animals that live on land.
where do the sperm and egg meet?
male transfers sperm directly into the female.
who spends more time caring for young?
internal.
mammals fertilize ______.
internally.
marsupials keep baby in a ______.
pouch.
what is a hermaphrodite?
animals that have both male and female reproductive organs.
what are the two types of hermaphrodites?
simultaneous and sequential.
what are simultaneous hermaphrodites?
have functioning male and female reproductive organs.
what are sequential hermaphrodites?
when they have male and female reproductive organs but one sets functions early early in life and the other set functions later in life.
