Name______Date______
Biology Chapter 25 Animal Development Mr. Provost
A)Define the following terms:
1)Gestational period
2)Development
3)Cleavage
4)Amniotic sac
5)Metamorphosis
B)Complete the following multiple choice questions.
___1) The early stages of embryo development of many animals looks the same, cat, dog, human, chicken.
a)true
b)false
___2) Humans , cats, dogs and other mammals have specialized structures that allow for the external development of their young.
a)true
b)false
___3) The ability of an organism to go through many changes in form from embryo stage to fetus and finally into final stage where they resemble the adult stage is known as
a)internal development
b)external development
c)cleavage
d)both a and b
___4) After the egg is fertilized, it starts going through ______cell division, creating copies of body cells.
a)Meiotic
b)Mitotic
c)Sexual reproduction
d)Non of the above
____5) The stage where the egg has multiplied many times and now is a ball of cells that will begin making different types of cells, skin cells, nerve cells, etc.
a)pupa
b)fetal
c)cleavage
d)labor
___6) Internal fertalization and external development are used by:
a)Mammals
b)Fish
c)Birds
d)Birds and mammals
___ 7) In the Uterus, what structure provides for the protection of the fetus?
a)umbilical cord
b)placenta
c)amniotic sac
d)cervix
___8) This is the adaptation that female mammals have developed that allows for internal fetal development.
a)ovaries
b)uterus
c)fallopian tubes
d)mammary glands
___9) This is the structure that allows for external development to take place and allows for gas transfer.
a)yolk
b)shell
c)amnion
d)albumen
___10) After the third month of human embryo development, you can
a)hear the heartbeat
b)tell the sex of the fetus
c)start to see all of the various parts develop
d)all of the above
___11) You tell that a fetus is human after the 1st month of development
a)true
b)false
___12) What part of the baby is delivered first in a normal vaginal delivery?
a)feet
b)head
c)butt
d)arm
___13) The process of labor starts when
a)the contractions are two minutes apart
b)the baby’s head is seen
c)the amniotic sac bursts
d)none of the above
____14) This is the structure that transports oxygen and nutrients to the fetus and carries wastes away from it.
a)placenta
b)amniotic sac
c)umbilical cord
d)cervix
___15) This is the structure that acts as a barrier between the mother’s blood and the baby’s blood.
a)placenta
b)amniotic sac
c)umbilical cord
d)cervix
___16) What part of the egg provides a chick with nutrients ?
a)shell
b)yolk
c)white
d)all of the above
___17) The amphibians and many insects go through a process of change after they hatch , this process is called ______in order to become adult.
a)development
b)gestation
c)metamorphosis
d)all of the above
___18) How are wastes gotten rid of by a human embryo?
a)wastes are passed into the mother’s blood
b)they are stored in the amniotic sac
c)they are stored in the placenta
d)the fetus has no biological wastes
___19) The point at which a fertilized egg can be identified as a human, dog or anything else.
a)embryo stage
b)fetal stage
c)gestational stage
d)afterbirth
___20) Most fish have ______fertilization and ______development.
a)internal/external
b)external/external
c)internal/internal
d)external/external
C) Describe what happens in a breach birth, and what must be done so that the baby will be delivered OK.