animal and plant reproduction

Question 1

what is a gamete

Answer 1

sex cell

Question 2

what is a male gamete

Answer 2

a sperm

Question 3

what is a female gamete

Answer 3

an egg

Question 4

how many chromosomes do gametes contain & what does this mean

Answer 4

gametes contain half the chromosomes number (e.g humans gametes have 23 )

Question 5

are gametes haploid or diploid

Answer 5

haploid

Question 6

what do the testes do

Answer 6

produce sperm

Question 7

what does the penis do

Answer 7

carries sperm outside of the body

Question 8

what does the sperm duct do

Answer 8

tube where sperm travels from the testes to the penis

Question 9

what does the urethra do

Answer 9

releases sperm inside the vagina

Question 10

what is a haploid

Answer 10

Cells that only have one set of chromosomes

Question 11

what are diploids

Answer 11

Cell that have two sets of chromosomes

Question 12

what does the vagina do

Answer 12

receives sperm during reproduction

Question 13

what does the uterus do

Answer 13

where fertilised egg develops

Question 14

what does the oviduct do

Answer 14

site of fertilisation

Question 15

what do the ovaries do

Answer 15

produces the female sex cell (egg)

Question 16

special feature of the egg

Answer 16

the haploid nucleus of this gamete contains genetic information for fertilisation

Question 17

special feature of the sperm

Answer 17

the tail enables it to swim

Question 18

what does the uterus contain

Answer 18

amniotic sac , umbilical cord , placenta

Question 19

what is the function of umbilical cord

Answer 19

this connects the foetus to the placenta

Question 20

what is the function of the amniotic sac

Answer 20

contains fluid which cushions and protects the foetus

Question 21

what is the function of the placenta

Answer 21

allows nutrients and oxygen to diffuse from mother to foetus

Question 22

what are the female gamete of plants

Answer 22

ovule - produced in the ovary

Question 23

what is the male gamete of the plant

Answer 23

pollen grains produced in the anther

Question 24

function of stigma (female)

Answer 24

collects pollen grains

Question 25

function of the style (female)

Answer 25

carries pollen grains to ovary

Question 26

function of the ovary (female)

Answer 26

produces female gamete

Question 27

what do the function of the anther ( male)

Answer 27

produces male gamete ( pollen grain )

Question 28

function of filament(male)

Answer 28

supports another

Question 29

what structures are male in the plant

Answer 29

anther & filament

Question 30

what structures of the plant are female

Answer 30

stigma , style & ovary

Question 31

what are normal plant structures

Answer 31

sepal & petals

Question 32

what is the function of the sepal ( normal )

Answer 32

protects unopened flowers

Question 33

what is the function of the petals ( normal)

Answer 33

attracts insects

Question 34

pollination meaning

Answer 34

the act of transferring pollen grains from the anther(male ) to the stigma(female)

Question 35

what is self pollination

Answer 35

self pollination is if pollunation occurs in the same flower

Question 36

what is cross pollination

Answer 36

cross pollination is if pollunation occurs between different flowers

Question 38

features of asexual reproduction

Answer 38

- only one parent / no sex cells - parent passes all of the genetic information to the offspring - the offspring are clones

Question 39

examples of plants that use asexual reproduction

Answer 39

runners , tubers , bulbs

Question 40

describe the process of fertilisation

Answer 40

sperm is produced in the testes and goes through the tube of the sperm duct and once the penis is inside the vagina the urethra sends the sperm up through the vagina and into the oviduct where the egg( made in the ovaries) meets the sperm and forms a zygote

Question 42

describe the process of plant fertilisation

Answer 42

After pollen has landed on the stigma, it grows a pollen tube down through the style to the ovary , The nucleus of the pollen grain travels down the pollen tube and fertilises the nucleus in the ovule and finally The fertilised ovule develops into a seed.

Question 43

What is an example of a bulb plant and what is a bulb

Answer 43

Bulbs are underground food storage organs which can grow into new plants , for example onion and garlic