ZOOL 250 LAB Exam Questions and Answers with Verified
Solutions | Latest 2026 Update
Q: Eukaryote
Answer:
a cell with nuclei, mitochondria, chloroplasts, and other membrane-bound
organelles
Q: Autogenic
Answer:
when the protist makes its own armour
Q: Allogenic
Answer:
when the protist does not make its own armour
Q: Sessile
Answer:
an organism that is attached to a surface, and does not move
Q: Choanocyte
Answer:
collar cells
they have a ring of microvilli surrounding a flagellum
Q: Mesohyl
Answer:
gelatinous layer between two layers of the sponge
Q: Spicules
Answer:
a structure made of calcium or silica that supports the sponge, like a skeleton
Q: Spongin
Answer:
elastic fibres of collagen in sponges Demospongiae only
,Q: Three types of sponge body plan
Answer:
ascon, sycon, leucon only Calcarea has all three types
Demospongiae has only leucon
Q: Osculum
Answer:
large hole at the top of the sponge body through which water exits
Q: Ostia
Answer:
water intake pores on the sponge
Q: Protist
Answer:
a group of organisms that are NOT animals, plants, and fungi
Q: Phylum Euglenida (Euglena)
Answer:
a phytoflagellate some of the most common freshwater protists
Q: Contractile vacuole
Answer:
a structure used to store and expel excess water
Q: Chloroplast
Answer:
an organelle that performs photosynthesis
Q: Flagellum
Answer:
a hair-like structure that allows the protist to move
Q: Phylum Chlorophyta (Volvox)
,Answer:
a form of colonial protists that form colonies similar to the organization of
multicellular organisms
Q: Parent colony
Answer:
the colony that's about to reproduce
Q: Juvenile colony
Answer:
the product of reproduction
Q: Flagellated cells (volvox)
Answer:
cells in the gelatinous matrix that contain flagella
Q: Gelatinous matrix
Answer:
acellular 'glue' that holds the cell together
Q: Phylum Dinoflagellata (Ceratium)
Answer:
saltwater and freshwater protists often with autogenic armour formed of cellulose
plates
includes some toxic marine species (red tide)
Q: Thecal plates
Answer:
plates that form a shell around the cell to protect the dinoflagellate
Q: Annulus/groove/sulcus
Answer:
gaps between thecal plates to allow flagella to extend out of the cell
Q: Phylum Diplomonadida (Giardia)
Answer:
a group of zooflagellates that include many parasitic protists to humans
, Q: Adhesive disk
Answer:
a disk on the structure that allows Giardia to attach to intestines
Q: How many flagella do Giardia have?
Answer:
8
Q: How many nuclei do Giardia have?
Answer:
2
Q: Phylum Kinetoplastida (Trypanosoma!)
Answer:
a group of zooflagellates that include protists responsible for some of the most
detrimental human diseases
Q: Undulating membrane
Answer:
a membrane that attaches the flagella to the body, and increases surface area to
allow for better movement
Q: Kinetoplast
Answer:
an area of increased mtDNA, which is inherited from both parents (diploid hehe)
Q: Nucleus
Answer:
the control centre of the Kinetoplast
Q: Sarcodines
Answer:
protists that use their pseudopodia to move and feed they are NOT flagellates
Q: Pseudopodia
Solutions | Latest 2026 Update
Q: Eukaryote
Answer:
a cell with nuclei, mitochondria, chloroplasts, and other membrane-bound
organelles
Q: Autogenic
Answer:
when the protist makes its own armour
Q: Allogenic
Answer:
when the protist does not make its own armour
Q: Sessile
Answer:
an organism that is attached to a surface, and does not move
Q: Choanocyte
Answer:
collar cells
they have a ring of microvilli surrounding a flagellum
Q: Mesohyl
Answer:
gelatinous layer between two layers of the sponge
Q: Spicules
Answer:
a structure made of calcium or silica that supports the sponge, like a skeleton
Q: Spongin
Answer:
elastic fibres of collagen in sponges Demospongiae only
,Q: Three types of sponge body plan
Answer:
ascon, sycon, leucon only Calcarea has all three types
Demospongiae has only leucon
Q: Osculum
Answer:
large hole at the top of the sponge body through which water exits
Q: Ostia
Answer:
water intake pores on the sponge
Q: Protist
Answer:
a group of organisms that are NOT animals, plants, and fungi
Q: Phylum Euglenida (Euglena)
Answer:
a phytoflagellate some of the most common freshwater protists
Q: Contractile vacuole
Answer:
a structure used to store and expel excess water
Q: Chloroplast
Answer:
an organelle that performs photosynthesis
Q: Flagellum
Answer:
a hair-like structure that allows the protist to move
Q: Phylum Chlorophyta (Volvox)
,Answer:
a form of colonial protists that form colonies similar to the organization of
multicellular organisms
Q: Parent colony
Answer:
the colony that's about to reproduce
Q: Juvenile colony
Answer:
the product of reproduction
Q: Flagellated cells (volvox)
Answer:
cells in the gelatinous matrix that contain flagella
Q: Gelatinous matrix
Answer:
acellular 'glue' that holds the cell together
Q: Phylum Dinoflagellata (Ceratium)
Answer:
saltwater and freshwater protists often with autogenic armour formed of cellulose
plates
includes some toxic marine species (red tide)
Q: Thecal plates
Answer:
plates that form a shell around the cell to protect the dinoflagellate
Q: Annulus/groove/sulcus
Answer:
gaps between thecal plates to allow flagella to extend out of the cell
Q: Phylum Diplomonadida (Giardia)
Answer:
a group of zooflagellates that include many parasitic protists to humans
, Q: Adhesive disk
Answer:
a disk on the structure that allows Giardia to attach to intestines
Q: How many flagella do Giardia have?
Answer:
8
Q: How many nuclei do Giardia have?
Answer:
2
Q: Phylum Kinetoplastida (Trypanosoma!)
Answer:
a group of zooflagellates that include protists responsible for some of the most
detrimental human diseases
Q: Undulating membrane
Answer:
a membrane that attaches the flagella to the body, and increases surface area to
allow for better movement
Q: Kinetoplast
Answer:
an area of increased mtDNA, which is inherited from both parents (diploid hehe)
Q: Nucleus
Answer:
the control centre of the Kinetoplast
Q: Sarcodines
Answer:
protists that use their pseudopodia to move and feed they are NOT flagellates
Q: Pseudopodia
