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The World of Plants
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What is the source of all energy on earth?
The sun
What are plants needed for?
Habitats
Food
Raw materials
Medicines
What plant is used to produce morphine?
Poppy
What does the destruction of habitats mean?
The loss of many species
What has selective breeding resulted in?
The loss of certain plant species
What does a seed consist of?
Seed coat
Embryo
Food store
What do seeds need to germinate?
W
ater
O
xygen
W
armth
What is germination?
When a seed turns into a young seedling with green leaves
What is the male part of the plant called and what does it consist of?
The Sta
men
It consists of: the anther and filament
What is the female part of the plant called and what does it consist of?
The Carpel
It consists of
: the stigma, style and ovary
What is pollination?
Pollination is the transfer of pollen from the anther to the stigma
What are two types of pollination?
Wind
Insect
What is fertilisation?
Fertilisation is when the nuclei of the male and female gametes fuse together
What are the male and female gametes?
Male - pollen
Female - ovule
What are the three types of seed dispersal?
Wind
Animal - internal
Animal - external
There is an ________ temperature at which seeds will germinate?
optimum
What is a clone?
A group of organisms that originate from the same parent and are genetically identical
How many parents does asexual reproduction involve?
One
What is a runner?
A side shoot that grows out from the parent (eg strawberry)
What are two methods of artificial propagation?
Cuttings
Grafting
What is artificial propagation?
A method of producing large numbers of genetically identical plants
What is the word equation for photosynthesis?
carbon dioxide + water ---> glucose + oxygen
In photosynthesis light energy is converted into ________ energy?
chemical
How does water enter the root?
By osmosis
______ carries sugar from leaves around the plant?
Phloem
_______ carries water from soil to leaves?
Xylem
Is the Xylem dead or living?
Dead
Name the parts of the Xylem
Thread like tubes
Cell wall (strengthened by rings or spirals or tough woody lignin)
Pits
Name the parts of the Phloem
Sieve plate
Pore
Strand of cytoplasm
Companion cell (which contains a cell wall, large nucleus and dense cytoplasm)
What are the tiny pores through which water vapour can be lost called?
Stomata
What control the stamomata opening and closing?
Guard cells
What do root hairs provide?
A large surface area
How is glucose made in respiration used in plants?
Stored as starch (energy store)
Used for respiration
To make cellulose (structural/building material)
Green plants use _______ to convert light energy into stored chemical energy?
chlorophyll
The leaf vein contains....?
Xylem and Phloem
Why are leaves flat with a large surface area?
To absorb as much light as possible
What is the upper surface of the leaf called?
The waxy cuticle
What do the upper cells of the leaf make up?
The epidermis
Where does most photosynthesis take place?
In the palaside cells (which contain a lot of chloroplasts)
What are the limiting factors of photosynthesis?
Light intensity
Carbon dioxide concentration
Low temperatures
Author
Anonymous
ID
63196
Card Set
The World of Plants
Description
Standard Grade Biology - The World of Plants
Updated
2011-01-31T19:05:54Z
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