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Directions: Plants are the key to life on Earth because they provide
food for other living things.
Visit the Web sites below to learn about how seeds grow, how plants
survive, and how flowers bloom. First, print out the crossword puzzle
so you can write down your answers. (Click on the puzzle for a printable
version.) Then click on the links below to find the answers to the
questions.
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Bees help make new plants by spreading
from one
flower to the next.
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The giant gray-striped sunflower easily grows to
_
feet or more.
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Soil is more than just dirt; it secures
the plant’s roots and provides
_.
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Wildflowers are flowers that grow
without human cultivation. Ironweed is a wildflower with a bright
pink color. The cardinal flower is bright
_.
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Plants and trees draw up
through their roots. It comes out through their leaves as dew. This
process is called transpiration.
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In the Arctic there is a surprising abundance of flowers. Most
of the plants grow close to the ground, due to the shallow soil
(that is not deep enough for big plants) and the short
_
growing time.
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People and animals depend on plants
for lots of different things. Plants are used to make many of the
that cure our illnesses.
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Moss and ferns are two kinds of
_ plants that have
been on Earth for a very long time.
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A flower has four basic parts: the
sepal, petal, carpel, and
__.
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Any plant that grows where a gardener does not want it can be considered
a
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When a plant flowers and produces
seeds, the protective covering around the seeds is the
_.
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Desert plants must adapt to the hot,
dry desert environment to survive. When it rains, the saguaro
expands and becomes larger in order to store water.
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A plant starts off as a seed and then
slowly develops into a
_ and grows roots. It is then
a young plant and continues to grow.
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Photosynthesis is the process by which
plants make food, using water, carbon dioxide, and
__
for energy.
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Carnivorous plants gain nutrition
by capturing insects. The Venus
__ has sensitive leaves that
snap shut very quickly, trapping whatever is inside.
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If you come in contact with poison
ivy, it can cause annoying itching and blisters. You can recognize
it by its three shiny
__.
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Like wildflowers, there are many wild
fruits and vegetables. You can find wild asparagus where there are
tall
__.
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