Coelenterata Flashcards
(44 cards)
1
Q
Hydra
A
Water serpent
2
Q
Obelia
A
Sea fur
3
Q
Physalia
A
Portugese man of war
4
Q
Cyanea
A
Sun jelly
5
Q
Aurelia
A
Moon jelly
6
Q
Rhizostoma
A
Largest jellyfish
7
Q
Gorgonia
A
Sea fan
8
Q
Pennatula
A
Sea pen
9
Q
Adamsia
A
Sea anemone
10
Q
Tubipora
A
Organ pipe coral
11
Q
Heliopora
A
Blue coral
12
Q
Term Coelenterata given by
A
Leuckart
13
Q
Term Cnidaria given by
A
Hyman
14
Q
Totipotent cells in coelenterates
A
Interstitial cells
15
Q
Cells exclusive to ectoderm of coelenterates
A
Cnidoblast cells and germ cells
16
Q
Larva of coelenterates
A
Planula
17
Q
Polyp form
A
- Asexual
- Mouth in hypostome
- Velum absent
- 24 tentacles
18
Q
Medusa form
A
- Sexual
- Mouth in manubrium
- Velum is present
- 16 tentacles
19
Q
Hydrozoa
A
- Diploblastic
- Ectodermal gonads
- Polyp and medusa
20
Q
Scyphozoa
A
- Triploblastic
- Endodermal gonads
- Medusa present, Polyp absent
# Thick mesoglea
21
Q
Anthozoa
A
- Triploblastic
- Endodermal gonads
- Polyp present, medusa absent
22
Q
Only neurotoxic coelenterate
A
Physalia
23
Q
Bioluminescent coelenterate
A
Aurelia
24
Q
Proto-cooperation with hermit crab
A
Adamsia
25
Marine hydra
Proto-hydra
26
Most sensitive part of coelenterates
Hypostome
27
Function of pedal disc
1. Adhesive substance for attachment
2. Gas bubble for floatation
28
Hollow tentacles
Hydra
29
Solid tentacles
Obelia
30
Stenotele / Penetrant nematocyst
Injects hypnotoxin
31
Desmoneme / Volvent nematocyst
Captures prey
32
Stereoline glutinant
Small glutinant / Atrichous isorhiza
33
Streptoline glutinant
Large glutinant / Holotrichous isorhiza
34
Epithelio-muscular cells
Form longitudinal muscles
35
Epithelio-glandular cells
(Pedal disc secretions)
36
Endothelio-muscular cells
Form circular muscles
37
Endothelio-glandular cells
1. Enzymatic glands help in extracellular digestion.
2. Mucous glands secrete slimy fluid for lubrication and entangling prey.
38
Favorite food of hydra
Waterfleas (Cyclops and Daphnia)
39
Chemical stimulus to recognize waterfleas
Glutathione
40
Nutrient not digested by hydra
Starch
41
Galvanotaxis of hydra
Tentacle bends towards anode
42
Number of chromosomes in hydra
12
43
Fastest means of locomotion in hydra
Somersaulting
44
Slowest means of locomotion in hydra
Gliding
