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Petal
Attracts insects with color and scent 
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Sepal
Protects flower in bud and when closed
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Receptacle
Supports all the other parts of the flower
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Nectary
Produces nectar to attract and reward insects
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Ovary
Contains one or more ovules
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Ovule
Contains an ovum, contains female sex cell
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Style
Supports the stigma
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Stigma
Catches pollen on its sticky surface
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Carpel or Pistil
Unit containing all the female parts of the flower
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Anther
Pollen producing structure
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Filament
Stalk supporting the anther
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Stamen
Unit containing all the male parts of the flower
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Pollen
contains the male sex cell
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Name the parts of the flower on the picture
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What is the life cycle of a flowering plant?
Germination, growth and development, flower development, pollination, fertilization, fruit and seed development, and dispersal.
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What are the two types of pollination?
Self-pollination and cross-pollination
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What is pollination?
The transfer of pollen from an anther to a stigma
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What is self-pollination?
The transfer of pollen from the anther to the stigma of the same flower or another flower on the same plant.
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What is cross-pollination?
The transfer of pollen from an anther to a stigma of a different plant
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Name agents of pollination
- insects - rose, daisy, sunflower, lily
- wind - grasses, cereals - wheat, barley, maize
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What is fertilization?
The male sex cell fuses with the female sex cell. A new individual arises - first cell of the new individual = zygote
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What is the first cell of a new individual in a plant called?
A zygote
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In insect pollination, why does an insect come?
To collect nectar or pollen for food
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What attracts an insect to a flower?
The scent and colored petals advertise the presence of food.
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How does an insect get pollen on its body?
By brushing past anthers to get to nectaries, this is purely accidental.
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When does pollination take place?
When the insect brushes some of the pollen grains it collected before on to the stigma, purely accidental
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Pollen grains will only grow tubes if they land where?
On a stigma of their own species
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What happens when a pollen grain arrives on a stigma?
The pollen grain will germinate and begin to grow a pollen tube
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The pollen tube grows through the style towards what?
An ovule inside the ovary
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What is a gamete?
The male sex cell
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What is the small hole the male gamete enters the ovule through called?
A micropyle
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Where do the male and female sex cell fuse?
In the ovule
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The zygote divides to form what?
The seed
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What does the ovary change to?
A fruit
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What is Fruit and Seed Development?
- zygote --> embryo --> inside the seed
- ovule --> seed
- ovary --> fruit
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What is dispersal?
The spreading out of the seeds
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Why is dispersal necessary?
Less competition for resources which are space, water, sunlight, and minerals
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What are agents of dispersal?
- Wind - dandelion, sycamore, poppy
- Water - coconut
- Self Dispersal - explosive pods: peas, beans
- Animal - attaches to the fur: burdock
- edible fruits: blackberry, papaya, apple, tomato
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What is germination?
When the seed starts to grow
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What conditions are needed for germination?
water, warm temperature, and oxygen
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What conditions are not needed for germination?
soil, minerals, and light
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