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Life Cycle and Structures of a Plant
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Gravity
Terms in this set (20)
germination
Process in which seed coat splits open and a root begins to grow downward into the soil.
sprout/seedling
A tiny shoot begins to grow upward from the germinated seed.
plant growth
Period of time when the plant gets taller, grows
more leaves, and makes its own food by photosynthesis.
flower buds
Appear at the end of stems.
flowers
Responsible for creating new seeds if pollinated.
pollination
Process in which a pollinator (bird, insect or wind) moves pollen from one flower to another, fertilizing the flower so new seeds can grow.
Fruit or seed pod formation
Forms around the seeds to protect them until they are ready to be planted.
Seed dispersal
The fruit or seed pod opens and seeds are scattered (by wind, water, or animals) to land on/in the ground and begin germinating.
Hooks and burrs
Small hooks on seeds that attach themselves to animals so seeds can get scattered.
root
anchors the plant, brings water and minerals to plant from soil
stem
holds plant up and transports water and food through plant
leaf
"food factory" for plant, using sunlight, water and carbon dioxide to create food (sugar) for the plant, and oxygen.
chlorophyll
green substance in leaves and stems, needed for photosynthesis to occur
flower
contains eggs that can be fertilized to make new seeds
pistil
receives pollen and grows a tube to the ovary to fertilize the eggs
stamen
produces pollen, a yellow powder
pollinator
helps moves pollen from one flower to another, like a bee, bird, butterfly or other insect.
sepal
like small green leaves, helps protect flower before it opens
receptacle
end of flower stalk
petals
bright part of flowers that help attract the attention of pollinators like bees.
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Verified questions
BIOLOGY
Gradualism (a). pattern in which evolution occurs slowly and steadily over time (b). someone who studies fossils and ancient life the theory that eukaryotic cells developed from prokaryotic cells in a symbiotic relationship (c). term used to describe a species that has died out (d). a pattern of evolution in which two species evolve in response to changes in each other
BIOLOGY
The common grandfather of two first cousins has hereditary hemochromatosis, a recessive condition causing an abnormal buildup of iron in the body. Neither of the cousins has the disease nor do any of their relatives. a. If the first cousins mated with each other and had a child, what is the chance that the child would have hemochromatosis? Assume that the unrelated, unaffected parents of the cousins are not carriers. b. How would your calculation change if you knew that 1 out of every 10 unaffected people in the population (including the unrelated parents of these cousins) was a carrier for hemochromatosis?
BIOLOGY
What is the difference between a dependent variable and an independent variable?
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Brown lemming densities in the tundra areas of North America and Eurasia show cyclic behavior: Every three to four years, lemming densities build up very rapidly, and they typically crash the next year. Sketch a graph that describes this situation.
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