Chapter 4: Pollination&Plant Life Cycles Flashcards
Function of the nectaries?
Produces sweet substance that insects drink for energy(in the centre of the flower)
Function of the stamen?
Produces a powder that makes new plants
Function of the petals?
Brightly coloured to attract insects
Function of the carpels?
Contains female reproductive parts (style,ovary,stigma)
Function of the sepals?
Special type of leaves that form a ring around petals, they protect the flower when it’s a bud
The function of the receptacles?
Top part of the flower stalk, where parts of flower are attached. Part of fruit after fertilisation.
What does the anther do?
Makes pollen
What does the filament do?
Supports anther
What does the stigma do?
Receives pollen
What does the ovary contain
Egg cells (ovules)
What does semi-permeable mean?
Membrane can only absorb some substances
What is osmosis?
Where water moves from a high conc. to a low conc.
What does the seed coat do?
Protects the seed during dispersal
What does the food source do?
Allow seeds to develop while underground
What does the embryos leaf?
Allows photosynthesis to occur ASAP
What does the embryos shoot do?
Ensures the leaves are as high as possible after germination
What does the embryos root do?
Ensures plant can absorb water ASAP
What is the xylem?
The structure in the stem that transports water
Order of pollination
Pollination, pollen tube growth, fertilisation, seed production, seed dispersal, germination
how is the wind plant adapted?
They are light so they can travel further in the wind and disperse lots of pollen
How’s the insect plant adapted?
Bright colours to attract insects
Adaptations of the insect pollen
Adapted bc it’s spiked and can latch onto insects fur and pollinated when move to another plant
How is wind pollen adapted?
Bc it has a smooth surface area and is aerodynamic so it can travel faster and further in the wind
Ways a seed can disperse
Latch, excretion, water, explode, wind
