Transcript PSec2REVIEW Flower Plant REVIEW.pps

Plant Reproduction
Flower Parts
Flowers are important in making seeds. Flowers can be made up of different parts,
but there are some parts that are basic equipment. The main flower parts are the
male part called the stamen and the female part called the pistil.
The stamen has two parts: anthers and filaments.
The anthers carry the pollen. These are generally yellow in color.
Anthers are held up by a thread-like part called a filament.
The pistil has three parts: stigma, style, and ovary.
The stigma is the sticky surface at the top of the pistil; it traps
and holds the pollen.
The style is the tube-like structure that holds up the stigma.
The style leads down to the ovary that contains the ovules.
Other parts of the flower that are important are the petals and
sepals. Petals attract pollinators and are usually the reason why
we buy and enjoy flowers. The sepals are the green petal-like
parts at the base of the flower. Sepals help protect the
developing bud
• Flowers can have either all male parts, all
female parts, or a combination. Flowers with
all male or all female parts are called
Imperfect ( cucumbers, pumpkin and melons)
• Flowers that have both male and female
parts are called perfect (roses, lilies and
dandelions)
Pollination
When pollination occurs, pollen moves from the male parts to
the female parts. Pollen grains land on the stigma and a tiny
tube grows from it, down the style into the ovary. The fertilized
ovule becomes the seed and the ovary becomes the fruit. The
ovary first begins to grow into fruit, then the seeds develop.
• Since flowers can't move, they need to be
able to attract pollinators or be built so that
wind is able to pollinate them.
• Flowers attract pollinators like bees,
butterflies, insects, and birds with sweet
nectar, bright colors, and shapes and
structures. Some flowers open at special
times to attract pollinators such as night
blooming plants that are pollinated by bats
Non-flowering Plants
• Some plants don't produce flowers and seeds.
• Plants such as ferns and mosses are called nonflowering plants and produce spores instead of
seeds.
• There is also another group called the Fungi,
that include mushrooms, and these also
reproduce by spores. We often think of these
individuals as "non photosynthetic plants" when
in fact they belong to their very own group or
kingdom.
Spores are tiny specks of living material.
Ferns produce spores on the undersides of their leaves. They look like
tiny brown spots. This is how ferns reproduce.
Asexual Reproduction
• Plants that can grow from pieces or parts of a
plant, such as stems or leaves, is a form of
asexual or vegetative propagation.
• This is a type of cloning as the new plant is
exactly the same as the parent plant.
• Another kind of vegetative reproduction is
through the growth of underground bulbs or
tubers, which become new plants.
What Are the Parts of a Flower? Most plants reproduce with the help of flowers.
Name each part of the flower below
Part 1 is the sticky part of the
pistil that pollen sticks to.
• Is it the anther, ovule, or stigma?
Part 2 is the long outgrowth of the ovary that
supports the stigma that collects pollen from
the stamens.Is it the pistil, style, or filament?
The stigma is the sticky part of the
pistil that pollen sticks to.
Part 3 the base part of the pistil that
holds the ovules.Is it the ovary, petal,
or stamen?
The style is the long outgrowth of the ovary that supports the stigma
that collects pollen from the stamens.
Part 4 contains the unfertilized seeds of the plant. Is it the
receptacle, ovules, or pistil?
The ovary is the base part of the pistil that holds the ovules.
Part 5 is the female part of the flower that
contains the stigma, style, ovary and ovules. Is it
the stamen, pistil, or sepal?
The ovules are the unfertilized seeds of the plant.
Part 6 is the part of the flower that
holds the pollen. Is it the anther,
filament, or stamen?
The pistil is made up of
the stigma, style, ovary and
ovules.
Part 7 is the long thread-like part of the flower that holds the
anthers out so insects can get to the pollen. Is it the receptacle,
filament, or stamen?
The anther is the part of the flower that holds the pollen.
Part the male part of the flower that is made
up of the anther and the filament. Is it the
receptacle, petal, or stamen?
The filament is the long thread-like part of the flower that
holds the anthers out so insects can get to the pollen.
Part 9 is the colorful part of the flower that
attracts insects and other pollinators. Is it the
receptacle, petal, or sepal?
The stamen is the male part of the flower that is made
up of the anther and the filament.
Part 10 is the top of the flower stalk that bears
the flower parts. Is it the receptacle or sepal?
The petal is the colorful part of the flower that protects the
flower and attracts insects and other pollinators.
There's only one very important part left. This is the part that
covers the outside of a flower bud to protect the flower before
it opens. Is it the corolla, sepal or budscale?
The receptacle is the top of the flower stalk that bears the flower
parts.
The sepal is the part that covers the
outside of a flower bud to protect the
flower before it opens.
Do All Plants Use Seeds to
Reproduce?
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what about a strawberry?
Does this plant reproduce by
seeds?
some other way?
both seeds and some other way?
• A strawberry plant produces tiny seeds that
are found in the fruit. But the plant also
grows stems called "runners" that grow into
the soil and form a new plant.
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Now, what about a fern?
Does this plant reproduce by
seeds?
some other way?
both seeds and some other way?
• A fern reproduces by way of spores-collections of female and male cells that are
carried by the wind to a new location where
they join together and form a new plant.
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Now, what about a mushroom?
Do mushrooms reproduce by
seeds?
some other way?
both seeds and some other way?
• A mushroom is a type of fungi—a group of
saprophitic (you don’t need to remember this
name) plants.
• These plants don’t produce their own food from
minerals, nutrients, water and sunlight using the
process of photosynthesis, but rather must grow
on decaying matter which provide food.
• Mushrooms reproduce by spores which grow on
the underside of the cap.
Now, what about carrots?
• Do carrots reproduce by seeds?
• some other way?
• both seeds and some other way?
• Carrots reproduce by seeds.
• Now, what about a pine tree?Does this plant
reproduce by seeds?
• some other way?
• both seeds and some other way?
• A pine tree is a conifer--a type of plant where
the seeds are found in cones.