fertilization
the two types of fertilization are?
internal & external fertilization
most types of animals that use external fertilization are ____ animals
marine/water
the ________ period is the time between when a egg is fertilized to when it's born
gestation
___________ is a developmental process where the form of a body changes as an animal forms from an egg to an adult
metamorphosis
______ is cellular division
mitosis
fertilization that occurs inside the body is...
internal fertilization
animals that utilize external fertilization ________ so the chance of survival is higher
lay more eggs
a kangaroos gestation period is how long?
a) 177 days
b) 4.5 months
c) 35 days
c , 35 days
stage one of metamorphosis is...
egg
the yolk provides an embryo with...
food
fertilization that occurs outside the body is called....
external fertilization
true or false ::
skin cells go through mitosis
true
how long is a mouse's gestation period?
a) 20 days
b) 21 days
c) 22 days
b , 21 days
stage two of metamorphosis is....
larva
true or false ::
eggs laid underwater will have a tough , leathery covering with jelly on top
false because they aren't tough or leathery
how many embryos are typically in an egg?
a) 2.5
b) 1
c) a little less than 5
b , 1
what 2 things do a developing embryo need?
nourishment, protection
how long is a humans gestation period?
a) 289 days
b) 9 months
c) 266 days
c , 266 days
stage three of metamorphosis is...
pupa
a zygote is a _____ celled organism while an embryo is a _____ celled organism
single , multi
genetic material is aka...
dna
a ______ is the new cell that's formed after an egg is fertilized
zygote
how long is an elephants gestation period?
a) 600 days
b) 645 days
c) 1.5 years
a , 600 days
the final stage / stage four of metamorphosis is....
adult
half the DNA comes from the ____ , the other half the ____
egg , sperm