Autotrophs- An autotroph is an organism that makes its own
food. Plants are the world’s most common form of autotrophs. The take energy
from the sun and use it to create sugars among other things to feed them. The
plant featured in the photo is an autotroph!
. Radial symmetry- Radial symmetry is found in organisms
centered on a make-believe axis. If one were to divide an organism with radial
symmetry, each part would be equal. Starfish are one of natures beautiful
organisms with radial symmetry.
Exoskeleton- An animal with an exoskeleton has a
hard exterior skeleton such as the shell of a sea urchin. The exoskeleton
serves as a form of protection for the animal living inside it. The sea urchin
exoskeleton is from my shell collection
. Endosperm- An endosperm is the tissue inside of a seed,
during fertilization. Much like an embryotic sac the endosperm surrounds the
embryo as a form of nutrients and protection. As seen in the photo is a palm
tree that eventually will produce coconuts that will have endosperm tissue.
Genetically modified organism- Genetically modified
organisms are organisms that have been altered by unnatural means not just
natural selection, such as corn. Some engineered corn is more resistant to
drought. They have been genetically modified for our convenience.
Charophytes
are the first plant division that may be most similar to the ancient water
dwelling plants. They are multi cellular green algae. This is a picture of
fresh water pond. There are probably charophytes living in the shallow fresh
water around the edges of this pond in Allyn. They get all their requirements
to survive in the surrounding water they live in.
Bryophytes
are plants that do not have rigid support tissues. They must grow close to the
ground. They also are non-vascular. Mosses make up the bryophyte plant
division. This is a picture of a common green moss found growing on moist areas
such as the trunk of this gravenstein apple tree.
Pteridophhytes are plants that have water conduction cells
of vascular tissue. They also have lignin support tissue and grow upright. Two
examples are ferns (picture 1) and horsetails (picture 2) Both of these
pteridophytes were growing on the side of a rural road where it is moist and
shady.
Gymnosperms are plants that have tiny gamephytes, produce
pollen and seeds. The seeds live in a protected cone. All conifers are in this
plant division. This tall pine tree is an example of a gamephytes.
The fifth plant division is the angiosperms. They are the
large category of plants that flower. The reproductive structures are within
the flower. In this picture of a hibiscus you can see the stamen and at the
tip; the anther. The anther produces pollen.
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