8th Grade Vocab List #4 Flashcards
A group of animals that includes jellyfish, corals, and sea anemones, characterized by the presence of specialized stinging cells called cnidocytes.
Cnidarians
A phylum of marine animals that includes sea stars, sea urchins, and sea cucumbers, characterized by radial symmetry and a unique water vascular system.
Echinoderms
A marine mammal belonging to the group that includes seals, sea lions, and walruses, characterized by fin-like limbs.
Pinniped
An organism that relies on external sources of heat to regulate its body temperature.
Ectotherm
An organism that can generate and regulate its body temperature internally, typically maintaining a relatively constant temperature. Heat enters.
Endotherm
The process of protecting and caring for offspring, often by keeping them close or within a sheltered area.
Brooding
The group of eggs produced or incubated at one time by a bird, reptile, or other egg-laying animal.
Clutch
The act of cleaning and maintaining the feathers or fur by using the beak or tongue to distribute oil and remove dirt.
Preening
Inborn or natural, referring to behaviors or characteristics that are present from birth and do not require learning.
Innate
The period during which a developing embryo or fetus is carried in the uterus of a female mammal.
Gestation
A characteristic or feature of an organism, often inherited through genetic information.
Trait
A distinctive feature or quality of an organism or object.
Characteristic
Having two identical alleles for a particular gene.
Homozygous
Having two different alleles for a particular gene.
Herteozygous
Referring to an allele that expresses its phenotype even if only one copy is present in the genotype.
Dominant
Referring to an allele that expresses its phenotype only when two copies are present in the genotype.
Reccesive
The muscular tube that connects the mouth to the stomach in animals, including humans, and is involved in the transport of food.
Esophagus
A state of dormancy or reduced metabolic activity that some animals enter during hot and dry periods.
Estivation
The tube-like structure that carries air from the mouth or nose to the lungs in animals with lungs, including humans.
Trachea
Chemical substances released by an organism to elicit a response from other members of the same species, often used for communication.
Pheromones
A mass of nerve cells outside the central nervous system, often forming a nerve center.
Ganglion
A blood vessel that carries blood toward the heart.
Vein
A blood vessel that carries blood away from the heart.
Artery
Tiny air sacs in the lungs where gas exchange (oxygen and carbon dioxide) occurs.
Alveoli
Relating to the lungs or the respiratory system.
Pulmonary
