Reproduction In Plants Flashcards
FLOWER PARTS AND THEIR FUNCTIONS:
What does pollen do?
Delivers the male gametes
FLOWER PARTS AND THEIR FUNCTIONS:
What does the flower stalk do?
Forms a base for the flower
FLOWER PARTS AND THEIR FUNCTIONS:
What does the style do?
Holds up the stigma
FLOWER PARTS AND THEIR FUNCTIONS:
What does the filament do?
Supports the anther
FLOWER PARTS AND THEIR FUNCTIONS:
What does the anther do?
Produces pollen
FLOWER PARTS AND THEIR FUNCTIONS:
What does the sepal do?
Protects the flower in bud
FLOWER PARTS AND THEIR FUNCTIONS:
What does the petal do?
It secretes a sugary solution called nectar
FLOWER PARTS AND THEIR FUNCTIONS:
What does the nectary do?
Attracts insects
FLOWER PARTS AND THEIR FUNCTIONS:
What does the ovary do?
Contains the female gametes
FLOWER PARTS AND THEIR FUNCTIONS:
What does the stigma do?
Receives pollen
FLOWER PARTS AND THEIR FUNCTIONS:
What is the micropyle?
The entry point for the male nucleus at fertilisation
What is the stamens?
The male parts of the flower
What is the carpel?
The female parts of the flower
What are hermaphrodite plants?
Plants that have male and female sexual parts on the same individual
What are self sterile plants?
Plants that have special proteins on the surface of the stigma that prevent pollen tubes forming if pollen comes from the anthers of the same plant.
What is insect pollination?
Pollination of plants by insects
What is wind pollination?
Pollination of plants by wind
What is fertilization?
The fusion of the male and female gametes
What is a fertilised ovary called?
A fruit
What withers away after successful fertilisation?
Sepals, petals, anthers, stigma and style.
What happens to the fertilised ovule?
It develops into a seed
What does the micropyle do after fertilisation?
It allows the entry of water and oxygen as the seed germinates
What is a plumule?
A young shoot
What is a radicle
A young root
What do the plumule, the radicle and the cotyledons combine to make?
The embryo
What is the endosperm?
Tissue which forms the food store in cereal crops
What are cotyledons?
Seeeeeed leaves!!!!
What do cotelydons do after fertilisation?
Form the food store for the embryo (in some cases)
What is the testa?
The seed coat
What does the testa do?
Prevents the embryo from drying out
What is germination?
The development of a seed to a young plant
What 3 things does a seed need to germinate?
- a supply of water
- oxygen for aerobic respiration
- temperature suitable for enzymes
What is germination controlled by?
All powerful enzymes!! They wanna take over the world, BWAHA!!!
What is seed dormancy?
A resting state of a seed. They use very little food at this time.
What allows seeds to remain dormant?
The seed’s very low water content
What allows seeds to escape dormancy and germinate?
Availability of water
A type of germination is called hypogeal germination. What does hypogeal mean?
“Below the ground”
Why must the seedling begin to photosynthesise?
Otherwise all the food stores will be used up
What happens if a seed is planted too deep?
The shoot cannot get above the ground before all the food stores are used up
