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What makes cnidarians special?
They have stinging cells called cnidocytes to capture prey.
Are jellyfish dangerous?
Some, like box jellyfish, have powerful venom.
Can corals grow in cold water?
No, most corals require warm tropical waters.
How do Medusozoa develop during their life cycle?
Medusozoans transition from the polyp stage, which is stationary, to the medusa stage, which is free-swimming and mobile.
What are the two body shapes of cnidarians?
Polyp (stationary) and medusa (free-swimming).
Can cnidarians reproduce asexually?
Yes, many can reproduce by budding or splitting.
Can jellyfish change colors?
Yes, some jellyfish can change colors to deceive predators.
Why are Hydrozoans often colonial?
Hydrozoans often form polyps that work together to feed and protect each other.
Why do jellyfish sting?
To capture prey and defend themselves.
Do cnidarians have brains?
No, they have a simple nerve net instead.
What are Hydrozoans and what are their characteristics?
Hydrozoans are a class of cnidarians that include species like hydra.They have both a polyp and a medusa stage in their life cycle
How are corals different from jellyfish and sea anemones?
Corals are colonial, meaning they form groups of many polyps, while jellyfish and sea anemones are individual organisms.
Can cnidarians live forever?
Some, like hydras, have the ability to regenerate and avoid aging.
What happens if a jellyfish stings you?
It injects venom that causes pain or more serious effects.
What are the key characteristics of Anthozoans?
Anthozoans are cnidarians that live solely as polyps and include corals and sea anemones. They are stationary and often form large colonies.
Can jellyfish spread in the sea?
Yes, jellyfish spread through ocean currents and can travel for miles.
How do jellyfish swim?
By contracting and relaxing their bell to push water behind them.
What’s the main food of jellyfish?
Small fish, plankton, and other tiny sea creatures.
What are the differences between Anthozoa and Medusozoa?
Anthozoa includes species that live only in the polyp stage (like corals and sea anemones), while Medusozoa includes types that transition from a polyp to a medusa stage (like jellyfish).
Can jellyfish recover from their venom?
Yes, some jellyfish can neutralize their venom through tentacle regeneration.