22 terms

Apologia Biology Module 3 Edition 2

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Pseudopod
A temporary, foot-like extension of a cell, used for locomotion or engulfing food.
Vacuole
A membrane-bounded "sac" within a cell.
Ectoplasm
The thin, watery cytoplasm near the plasma membrane of some cells.
Endoplasm
The dense cytoplasm found in the interior of many cells.
Flagellate
A protozoan that propels itself with a flagellum.
Pellicle
A firm, flexible coating outside the plasma membrane.
Chloroplast
An organelle containing clorophyll for photosythesis.
Chlorophyll
A pigment necessary for photsythesis.
Eyespot
A light-sensitive region in certain protozoa.
Symbiosis
A close relationship between two or more species where at least one benefits.
Mutalism
A relationship between two or more organisms of different species where all benefit from the asociation.
Commensalism
A relationship between two organisms of different species where one benefits and the other is neither harmed nor benefited.
Parasitism
A relationship between two organisms of defferent speciees where one benefits and the other is harmed.
Cilia
Hairlike projections that extend from the plasma membrane and are used for locomotion.
Spore
A reproductive cell with a hard, protective coating.
Plankton
Tiny organisms that float in the water.
Zooplankton
Tiny floating organisms tha are either small animals or protozoa.
Phytoplankton
Tiny floating photosynthetic organisms, primarily algae.
Thallus
The body of a plant- like organism that is not divided into leaves, roots, or stems.
Cellulose
A substance (made of sugars) that is common in the cell walls of many organisms.
Holdfast
A special structure used by an organism to anchor itself.
Sessile Colony
A colony that uses holdfasts to anchor itself to an object.
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