REPRODUCTION Flashcards
Name the female parts of the flower
Stigma, style, ovary, ovule
Name the male parts of the flower
Anther, filament
Name the gender natural parts of the flower
Petals, sepal, stalk
LABEL THE PARTS OF A FLOWER
LABEL THE PARTS OF A FLOWER
Difference between insects and wind pollination PETALS
Insects
-brightly coloured
Wind
-dull colours
Difference between insects and wind pollination SCENT
Insect
-Yes
Wind
-no
Difference between insects and wind pollination NECTAR
Insects
-yes
Wind
-no
Difference between insects and wind pollination STIGMA
Insect
-inside the flower
wind
-can be feathered- bigger surface area to catch pollen
Difference between insects and wind pollination ANTHERS + FILAMENTS
Insect
-inside the flower
Wind
-outside the flower
Difference between insects and wind pollination AMOUNT OF POLLEN
Insect
-less pollen
Wind
-more pollen
Difference between insects and wind pollination TYPE OF POLLEN GRAIN
insect
-sticky pollen
Wind
-light weight pollen
Definition of pollination
The transfer of pollen from the anther of one flower to the stigma of another flower
What do seeds develop from
The fertilised egg
What 3 things is the seed made up of
- the embryo
- the food store
- a seed coat
Conditions for germination
Water
Oxygen
Warmth
WOW water
- swells the seed
- food store and feeds the embryo
WOW oxygen
Needed for respiration
WOW warmth
Needed for proper growth
They won’t grow until spring/summer
Sexual reproduction
FUSION, GAMETES, GAMETES, SEX CELLS, HALF
FUSION of male and female GAMETES. GAMETES are SEX CELLS. These contain HALF the genetic information of the normal cell.
-Humans
Asexual reproduction
- one parent
- offspring are genetically identical
- Aphias (insects) bacteria
Asexual reproduction in plants
Naturally- runners
Artificially- taking cutting
§FEMALE- ovary
Produces and releases the egg (female gamete)
§FEMALE- oviduct
Where the egg is released during ovulation. Where fertilisation occurs here
§FEMALE- uterus
Implantation of the embryo occurs here (were the egg sits after fertilisation)
§FEMALE- cervix
The ‘neck’ of the uterus will dilate during birth
§FEMALE- vagina
Sexual intercourse and birth
*MALE- sperm duct
Tube connecting the testes to the urethra
*MALE- bladder
Holds urine
*MALE- testes
Produces and releases sperm (male gamete)
*MALE- urethra
Tube along which urine and semen (containing sperm) will travel
*MALE- penis
Sexual intercourse
LABEL THE FEMALE AND MALE REPRODUCTIVE SYSTEMS
LABEL THE FEMALE AND MALE REPRODUCTIVE SYSTEMS
Menstrual cycle- 4 key points
- menstruation means period
- starts in puberty
- typically a 28 day cycle but can vary
- controlled by oestrogen and progesterone
How long is the menstrual cycle
28 days
On what day is ovulation
Day 14
How long on average does a period last for
3-7 days
What does the Oestrogen do
- It thickens the uterus lining
- stimulates the ovulation at day 14
What happens the progesterone levels
- They are high after ovulation
- maintains the lining of the uterus
What happens when the progesterone levels fall
The lining breaking down
What happens during menstruation
Levels of both hormones are low
What does the placenta do during pregnancy
-exchange of materials between the blood of mother and embryo
Secondary sexual characteristics MALE
- facial hair
- voice breaks
- sperm production
- increase sex drive
- increased muscle growth
Secondary sexual characteristics FEMALE
- menstruation (period)
- pubic hair
- development of breasts
- widening of hips
- change in distribution of fat
