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22 Cards in this Set
- Front
- Back
cellular |
of, relating to, or consisting of living cells. |
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tissue |
any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products. |
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sessile |
of an organism, e.g., a barnacle) fixed in one place; immobile. |
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radial symmetry |
symmetry around a central axis, as in a starfish or a tulip flower. |
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bilateral symmetry |
the property of being divisible into symmetrical halves on either side of a unique plane. |
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Cephalization |
sense organs at head region, move forward, bilateral animals |
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Coelom |
body cavity |
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true coelomate |
has organs completely surrounded by the coelom and can have more than one cavity like your cranial, thoracic, and pelvic cavities, all animals except porifera, cnidarian, flatworms, and roundworms |
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pseudocoelomate |
has organs surrounded by muscle and other tissue on one side of the organs, round body shape like a tube, roundworms |
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acoelomate |
has organs with muscle and other tissue surrounding, but no body cavity, flat body shape, flatworms |
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Protostome |
a multicellular organism whose mouth develops from a primary embryonic opening, such as an annelid, mollusk, or arthropod. |
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Notochord |
a cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals. |
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Amniotic egg |
The type of egg produced by reptiles, birds, and prototherian (egg-laying) mammals (amniotes), in which the embryo develops inside an amnion. The shell of the egg is either calcium-based or leathery. |
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Placenta |
a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord. |
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Marine |
of, found in, or produced by the sea. |
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Terrestrial |
of, on, or relating to the earth. |
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Exoskeleton |
a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection. |
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Molt |
(of an animal) shed old feathers, hair, or skin, or an old shell, to make way for a new growth. |
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Segmentation |
Segmentation in biology refers to the division of some animal and plant body plans into a series of repetitive segments |
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Metamorphosis |
(in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages. |
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Cnidocyte |
is an explosive cell containing one giant secretory organelle or cnida (plural cnidae) that defines the phylum Cnidaria (corals, sea anemones, hydrae, jellyfish, etc.). Cnidae are used for prey capture and defense from predators. |
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Septa |
a partition separating two chambers, such as that between the nostrils or the chambers of the heart. |