Understanding Nedarians and Ecnoderms

The video discusses two phyla: nedarians and ecnoderms. Nedarians, known for their stinging cells, include jellyfish and sea anemones. They exhibit radial symmetry and can reproduce both sexually and asexually. Ecnoderms, found in oceans, also have radial symmetry and can regenerate limbs. They are mostly carnivorous but can also be scavengers or decomposers. Both phyla lack complex nervous systems but have unique movement and feeding methods.

What is a defining feature of Nedarians?

• Bilateral symmetry

• Stinging cells

• Presence of a backbone

• Ability to fly

Which of the following is a famous example of a Nedarian?

• Octopus

• Jellyfish

• Sea urchin

• Starfish

How do some Nedarians capture their prey?

• With sticky tentacles

• Using sharp teeth

• By swallowing whole

• With a net

What is a characteristic of Medusa-type Nedarians?

• Tentacles facing upward

• Tentacles used for walking

• Tentacles hanging down

• No tentacles

How do Nedarians reproduce asexually?

• By splitting in half

• By cloning

• Through budding

• By laying eggs

Where are Ecnoderms typically found?

• In the air

• In the ocean

• On land

• In freshwater lakes

What is a common feature of Ecnoderms?

• Asymmetry

• No symmetry

• Radial symmetry

• Bilateral symmetry

How do Ecnoderms typically move?

• Using suction pads

• By swimming

• By jumping

• By flying

What is a unique ability of many Ecnoderms?

• Singing

• Flying

• Regenerating limbs

• Changing color

How do some Ecnoderms reproduce asexually?

• By budding

• Through fragmentation

• By laying eggs

• By cloning