Usually the smaller the animal the shorter the Compare and Contrast gestational time External Development Internal Development Humans 266 days Whale 457-548 days 2. An embryo develops 3. An embryo develops Rabbit 25-28 days Panda 95-160 days Outside the mother________ Inside the mother_________ Giraffe 457 days Kangaroo 33 days ________________________ ________________________ An embryo gets nourishment An embryo gets nourishment 4. 5. Elephant 670 days Tiger 103 days from the ____yolk_______ from ___the mother’s tissue____ Metamorphosis or from __a yolk inside the mother__ Developmental process in which the form of the 6. A zygote grows by 7. A zygote grows by body changes as an animal grows from an egg to an __mitosis__ and cell division __mitosis__ and cell division adult until it becomes an embryo. until it becomes an embryo. 8. The young hatch from eggs 9. The young developing inside ___outside the mother___ eggs hatch from _______________________ ___inside the mother_______ _________________________ and then _leaves the mother’s body__ 11 10 Gestation Length of time between fertilization and birth
Compare and Contrast External Development Internal Development 2. An embryo develops Outside the mother________ ________________________ 3. An embryo develops Inside the mother_________ ________________________ 4. An embryo gets nourishment from the ____yolk_______ 5. An embryo gets nourishment from ___the mother’s tissue____ or from __a yolk inside the mother__ 6. A zygote grows by __mitosis__ and cell division until it becomes an embryo. 7. A zygote grows by __mitosis__ and cell division until it becomes an embryo. 8. The young hatch from eggs ___outside the mother___ _______________________ 9. The young developing inside eggs hatch from ___inside the mother_______ _________________________ and then _leaves the mother’s body__ 10 Gestation Length of time between fertilization and birth Usually the smaller the animal the shorter the gestational time Humans 266 days Whale 457-548 days Rabbit 25-28 days Panda 95-160 days Giraffe 457 days Kangaroo 33 days Elephant 670 days Tiger 103 days Metamorphosis Developmental process in which the form of the body changes as an animal grows from an egg to an adult 11
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