reproduction

Question 1

what is sexual reproduction

Answer 1

production involving 2 parents,where offspring are genetically unique .

reproduction is the formation for new individuals-important for the survival of the species,but not necessary for the individual organism

Question 2

what does the reproduction system do

Answer 2

produces,stored,and releases specialized sex cells (gametes) that have half the information needed to make a new organism

Question 3

Male reproduction system

Answer 3

main function of the make reproduction system is to produce and deliver sperm

FSH and LH cause the testes in males to produce testosterone

testosterone will start to produce male characteristics in puberty

Question 4

female reproductive system

Answer 4

primary organs are the ovaries which releases eggs an also prepare a woman’s body to nourish a developing embryo

FSH and LH cause the ovaries in females to produce estrogen
estrogen will produce female characteristics in puberty

Question 5

Steps to sexual reproduction

Answer 5

Meiosis produces gametes
Gametes united to form a diploid zygote
zygote undergoes mitosis to grow
cells differentiate

Question 6

Differentiate

Answer 6

cells specialize
all cells have the same DNA
each type uses a different part of DNA

Question 7

Placenta

Answer 7

supplies oxygen and nutrients and removes carbon dioxide and waste from the fetus
maternal and fetal blood do not mix
all transfer happens by diffusion

Question 8

Plant reproductive system

Answer 8

Plant reproductive organs are found within their flowers perfect flowers have both male and female reproductive parts

Question 9

imperfect flowers

Answer 9

have either male or female reproductive parts

Question 10

monoecious plants

Answer 10

have both male and female reproductive organs in the same individual

Question 11

Dioecious plants

Answer 11

have separate male and female individuals

Question 12

Pistil

Answer 12

female parts of a plant
-Stigma
-Style
-Ovary

Question 13

stamen

Answer 13

male parts of a plant
Anther (makes pollen)
filament

Question 14

Pollination and fertilization

Answer 14

1.pollen must get from the anther to the stigma

2.once on the stigma, a pollen tube grows from the pollen grain down the style to the ovule to deliver sperm to the egg

3.after fertilization the ovary develops into fruit to assist in dispersal