Phylum Cnidaria Flashcards

1
Q

Poison-filled stinging structure

A

Nematocyst

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2
Q

Cnidaria

A

Jellyfishes, sea anemones, and coral

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3
Q

The layer found between the epidermis and gastroderm

A

Mesoglea

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4
Q

Inner lining of gastrovascular cavity

A

Gastroderm

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5
Q

Organisms that lack a backbone

A

Invertebrate

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6
Q

Immobile

A

Sessile

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7
Q

Mode of locomotion for Medusas

A

Jetpropulsion

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8
Q

Hydras

A

Class hydrozoan

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9
Q

Long flexible appendage

A

Tentacle

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10
Q

Many connected individuals living and working together

A

Colony

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11
Q

Jellyfishes

A

Class cyphozoa

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12
Q

Colony of coral

A

Great Barrier Reef

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13
Q

Colonial hydra

A

Portuguese man o’war

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14
Q

Extracellular

A

Outside the cell

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15
Q

Stinging cells

A

Cnidocytes

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16
Q

Outer layer of cells

A

Epidermis

17
Q

Digestive chamber

A

Gastrovascular cavity

18
Q

Zygote formation in the open water

A

External fertilization

19
Q

Body plan with equal halves when bisected through the centre

A

Radial symmetry

20
Q

Circular and longitudinal muscles along with no water to facilitate movement

A

Hydrostatic skeleton

21
Q

Loose organization of nerve cells for stimuli detection

A

Nerve net

22
Q

Corals and sea anemones

A

Class anthozoa

23
Q

Statocyst

A

Cells for detecting gravity

24
Q

Ocelli

A

Eyespots

25
Q

Have 2 different looking life stages

A
  1. Polyp

2. Medusa