Ch 39 Sexual Reproudction In Flowers Flashcards
Sexual reproduction
Involves the fusion of sex cells from both parents
Gametes
Haploid cells
Receptacle
Supports the floral part of flower
Petals
Can be used to attract insects
Stamens
The male part of the flower
Sepals
Protect the flower
Carpels
Female part of the flower
Stigma
Where the pollen lands on carpel
Style
Where the pollen grows to reach the ovary
Exine
Of a pollen grain is a thick outer wall, allows pollen to survive
Pollination
Is the transfer of pollen from the anther to a stigma of a flower from the same species
Self pollination
The transfer of pollen from the anther to the stigma on the same plant
Cross pollination
Transfer of pollen from the anther to the stigma of a different plant but from the same species
Fertilisation
The fusion of the male and female gamete to form a diploid zygote
Non endospermic
Seed has no endosperm
Endospermic
Seed has an endosperm
Dispersal
Is the transfer of a seed away from the parent plant
Dormancy
is when a seed is undergoing no growth and there is reduced metabolism
Germination
The regrow the of a seed after a period of dormancy
Germination
The beginning of the process of development of a seed to an adult plant
Seed dispersal
Where seeds are spread away from the parent plant to avoid competition
Methods of seed dispersal
Wind- winged fruits
Animal- poop
Water- buoyant fruit
Self- pea pods burst
Three factors necessary for seeds to germinate
Suitable temperature
Oxygen
Water
Two types of pollination
Self pollination
Cross pollination
Two types of cross pollination
Insect
Wind
