Domains of Life
True or False: Viruses are classified under one of the three domains.
What is False?
Jellyfish, corals, and sea anemones belong to this phylum.
What is Cnidaria?
True or False: Sponges are motile (move around) as adults.
What is False? (They are sessile as adults, motile as larvae.)
True or False: Zooplankton are usually primary producers.
What is False? (They are consumers.)
The word “plankton” comes from a Greek word meaning ______.
What is a drifter or a wanderer?
This domain contains single-celled prokaryotes that are commonly found in soil, water, and humans.
What is a bacterium?
Sponges belong to this phylum.
What is Porifera?
Sponges lack these two key body systems found in most animals.
What are the nervous and circulatory systems?
Phytoplankton produce most of the world’s ______.
What is oxygen?
Plankton are carried by this ocean movement.
What are currents?
This domain includes organisms with nuclei in their cells.
What is Eukarya?
: Starfish and sea urchins belong to this phylum.
What is Echinodermata?
Sponges filter water through tiny pores called ___
What are ostia?
The main difference between phytoplankton and zooplankton is how they obtain ____.
What is energy?
True or False: All plankton are microscopic.
What is False? (Some, like jellyfish, are macroscopic plankton.)
Bacteria that live in extreme environments, like hot springs or salty lakes, belong to this domain.
What is Archaea
The largest animal phylum, containing insects, crabs, and lobsters.
What is Arthropoda?
The cells that create water currents and trap food in sponges are called ____.
What are choanocytes (collar cells)?
These plankton are plant-like and carry out photosynthesis.
What are phytoplankton?
Plankton form the base of the ______ chain in aquatic ecosystems.
What is the food chain?
The three domains of life are ______, ______, and ______.
What are Bacteria, Archaea, and Eukarya?
Worms with segmented bodies, like the earthworm, are in this phylum.
What is Annelida?
Sponges have skeletons made of spicules made of either ______ or ______.
What are silica or calcium carbonate?
These plankton are animal-like and must consume other organisms for energy.
What are zooplankton?
The two main groups of plankton are ______ and ______.
What are zooplankton and phytoplankton?