Plants Flashcards
Functions of roots
Anchor plant into ground
Take in water and minerals
Can store food eg Carrot
Stem functions
Holds flowers leaves and fruit up
Year sport water and.p nutrients through the plant
Leaf functions.
Produce food and oxygen (photosynthesis)
Allows exchange of gases
Allows water Vapour escape plant
Stomata
Openings on bottom of leaf
Bud functions
Potential plant growth
Flower functions.
Produce seeds so plants can reproduce
Photosynthesis formula
Water+carbon dioxide+sunlight+chlorophyll=oxygen+glucose
What’s chlorophyll
Green pigment with absorbs sunlight and allows photosynthesis to take place
What is glucose produces during photosynthesis used for?
Energy for resperation
Forms starch in plant
Form cellulose for new cell walls
Types of plant reproduction
Sexual and asexual
Explain asexual reproduction
One parent
No gametes
No fertilisation
Offspring identical to parent
Explain sexual reproduction
Two gametes (egg and poll on) unite
Fertilisation
Offspring has both parents characteristics
Not identical to parents
What is the make part of the reproductive system
Stamen
What parts make up the stamen
Anther and filament
What is the female reproductive style called
Carpel
What makes up the carpel
Stigma
Style
Ovary
Why are petals large and colourful on animal pollinated plants
To attract animals
Function of stigma
Catches pollen
Function style
Carries pollen to ovary from stigma
Function ovary
Produces egg. Where fertilisation occurs
Anther function
Makes pollen grain. Nucleus of pollen grain=make gamete
Filament function
Ensures anther is high up in flower so pollen can leave easily
Sepal function
Protects flower when in bud
Types of pollination
Self pollination Cross pollination (to another flower)
Animal
Wind
Self
What happens during fertilisation
Male gamete and female gamete nucleus’ fuse.
Zygote is formed
Turns into seed
Dispersal
Transport of seed or fruit far away from parent plant
Method of dispersal
Wind (dandelions)
Water (coconuts)
Animal(apples)
Self (peas pop)
Transpiration
Loss of water vapour from a plant
Geotropism
Plants growth response to gravity
Roots down
Shoots up
Phototropism
Plants growth response to light
Grows towards light
Tropism
Response in growth of plant to a stimulus
Conditions necessary for germination
Moisture
Oxygen
Correct temperature
