Cell Type & Structure
Cnidarians are:
A. Prokaryotic
B. Eukaryotic
C. Both
D. Neither
B. Eukaryotic
Cnidarians are:
A. Autotrophs
B. Heterotrophs
C. Producers
D. Plants
B. Heterotrophs
Cnidarians reproduce:
A. Only sexually
B. Only asexually
C. Both
D. Not at all
C. Both
Two body forms:
A. Round & flat
B. Polyp & medusa
C. Tall & short
D. Hard & soft
B. Polyp & medusa
Cnidarians have:
A. Bilateral symmetry
B. Radial symmetry
C. No symmetry
D. Spiral symmetry
B. Radial symmetry
Stinging cells are called:
A. Flagella
B. Nematocysts
C. Cilia
D. Nephrons
B. Nematocysts
They mainly eat:
A. Plants
B. Rocks
C. Small fish/plankton
D. Sand
C. Small fish/plankton
Asexual reproduction method:
A. Budding
B. Mitosis only
C. Fertilization
D. Cloning machines
A. Budding
Polyp is:
A. Free swimming
B. Stationary
C. Flying
D. Burrowing
B. Stationary
They have a:
A. Brain
B. Heart
C. Nerve net
D. Spine
C. Nerve net
Digestion happens in the:
A. Stomach
B. Intestine
C. Gastrovascular cavity
D. Nucleus
C. Gastrovascular cavity
They catch food using:
A. Teeth
B. Tentacles with stingers
C. Hands
D. Roots
B. Tentacles with stingers
Sexual reproduction releases:
A. Blood
B. Eggs & sperm
C. Seeds
D. Spores
B. Eggs & sperm
Medusa is:
A. Attached
B. Swimming
C. Underground
D. Microscopic
B. Swimming
Nerve net helps with:
A. Digestion
B. Movement/response
C. Breathing
D. Reproduction
B. Movement/response
Cnidarians have:
A. Two openings
B. One opening
C. No openings
D. Three openings
B. One opening
Coral algae use:
A. Digestion
B. Respiration
C. Photosynthesis
D. Fermentation
C. Photosynthesis
Larval stage is called:
A. Tadpole
B. Planula
C. Embryo
D. Zygote
B. Planula
Example of medusa:
A. Coral
B. Jellyfish
C. Sponge
D. Worm
B. Jellyfish
Are all cnidarians dangerous?
A. Yes
B. No
C. Only at night
D. Only large ones
B. No
They capture prey using:
A. Legs
B. Wings
C. Tentacles
D. Fins
C. Tentacles
Algae give corals:
A. Oxygen only
B. Water
C. Extra energy/nutrients
D. Heat
C. Extra energy/nutrients
Being both methods helps:
A. Slow growth
B. Survival and spread
C. Stop reproduction
D. Reduce population
B. Survival and spread
Example of polyp:
A. Jellyfish
B. Coral/Anemone
C. Fish
D. Crab
B. Coral/Anemone
Coral reefs are important because they:
A. Destroy ecosystems
B. Provide habitats
C. Only look pretty
D. Make storms
B. Provide habitats