Download Quiz Date: Feb 1st Per

Name: Class Set
Quiz Date: Feb 1st Per:
(Edited 1-24-17)
This material can be found in the Organisms: From Macro to Micro book (Pages 46-63 and
106-119) and in your ScienceSaurus (153,162,114). “The Wonder of Flowering Plants” (116119) and the “From Seed to Adult Plant – and Back” (59-62) articles are the best to help study.
Good BrainPOP videos to watch on this topic include: Pollination, Seed Plants, and Plant
Growth. (Seedless Plants is also worth a watch, but will not be on the quiz.)
There may also be PowerPoint presentations added (including the Life Science “Visual
Glossary”) on our website in the Helpful Resources section on the bottom of the main Life
Science Web Page. (There wasn’t much posted when this was printed.)
Think about the main ideas or concepts that we learned about in each of our labs/lessons.
Use words, diagrams, sketches, phrases, bullets, etc. to record the main ideas in the boxes
below. Make the information meaningful for YOUR BRAIN (think about how you learn best).
Flower Dissection, Bill Nye Flowers, Pollen Nation Game, Wings of Life (Disney) Video, Plant C-E-R:
Focus Question: How do specialized plant structures and animal behaviors help plants reproduce?
-Some petals are colorful to attract pollinators. Some petals
even have infra-red arrows called nectar guides to help point
the pollinator in the right direction.
-Perfect flowers have both male and female reproductive parts.
-The stamen is made up of the male parts (filament, anther,
pollen).
-The filament holds the anther and pollen way up to make the
pollen more accessible for the pollinator.
-The anther makes and holds the pollen.
-The pollen is the male sex cell.
-The pistil is made up of the female parts (stigma, style, ovary).
-The stigma catches the pollen.
-The style holds the stigma way up to make it more accessible for the pollinator.
-The ovary makes and holds the eggs (female sex cells).
-Once pollen reaches the egg the egg becomes fertilized and turns into a seed. This is called
pollination.
-Some flowers self-pollinate (the pollen falls from the anther to the stigma of the same flower).
-Some flowers pollinate by the wind. The wind blows the pollen from the anther to the stigma.
These flowers are usually green because they don’t need to attract pollinators.
-Some flowers rely on pollinators to move pollen from the anther to the stigma. Pollinators can be
insects like bees, or other animals like birds or bats. The flowers need to produce sweet sugary
liquid called nectar to attract the pollinators. The pollinators drink the nectar for food.
-Often times pollen from one flower will pollinate a different flower of the same type (species). This
is called cross-pollination.
-Our pollinators (especially honey bees) are dying off. Without pollinators there is no pollination.
Without pollination we don’t get new seeds or fruits. This is problematic since much of our food
comes from flowering plants (strawberries, tomatoes, melons, etc.)
Seed Survival!!! Engineering Project:
Focus Question: How do specialized plant structures and animal behaviors help plants reproduce?
We learned that there are a variety of ways that seeds can move away from the parent plant (seed
dispersal). This is important so that the seeds and parent plants are not competing for the same
resources (nutrients, sunlight, water, space).
-Seeds can have hooks or burrs to get stuck on the fur or hair of animals. The animals then move
and the seeds drop off in a different area. These seeds are sometimes called hitchhikers.
-Seeds can be collected and buried (cached) by animals like squirrels. Sometimes the seeds are
forgotten about and then grow into a plant.
-Some seeds (especially in berries) have a special seed coat that allows the seed to survive in the
stomach of animals. The animal eats the fruits and then “deposits” the seeds with a little pile of
“fertilizer”.
-Seeds can be dispersed by the wind. Some seeds have wings (like a maple seed), some seeds have
fluff (like a dandelion), and some seeds are blown around on the ground (like tumbleweed).
-Seeds can be dispersed by water as well. These seeds usually have a hollow center so they float
(like a coconut).
-Seeds can also disperse by self-propulsion. The seed pods explode like a spring when touched (like
our local Jewelweed).
Corn and Bean Grow Systems:
Focus Question: How do specialized plant structures help plants grow?
-When a seed opens up and starts to turn into a plant we call it germination.
-Seeds don’t seem like they are living, but they are. Seeds are dormant until they have the right
conditions to grow into a plant (germinate).
-The seeds contain an embryo which will turn into a plant. The nutrient packet (endosperm) give
the seed the nutrients it needs to grow until it can get energy from the soil and the sun.
-The first root-like structure that grows down is known as the radicle. The radicle will start to
absorb water and nutrients from the soil.
-The first leaf called a seed leaf or a cotyledon grows upward from the seed.
-A plant with one cotyledon is called a monocot. A plant with two seed leaves is called a dicot.
-Monocots are plants like grasses, corn and wheat. Monocots typically have parallel veins in their
leaves and odd numbered flower parts.
-Dicots are represented by our bean plants and many of the herbs we grew. Dicots typically have
branching veins in their leaves and even numbered flower parts.
Hint, Hint, Wink, Wink Question: Give one example of a specialized plant structure and one
example of an animal behavior and explain how they help plants reproduce?
-Plants make nectar at the base of the flower to attract pollinators. Pollinators move from
flower to flower drinking the nectar. The pollen brushes off from the anther to the
pollinator. The pollen then brushes onto the stigma and the pollen can then fertilize the eggs
making new seeds.