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Jellyfish GoneWild3
Cnidarians - Hydra
| Question | Answer |
|---|---|
| Jellyfish belong to the domain: | Eukarya |
| Jellyfish belong to the kingdom: | Animalia |
| Jellyfish belong to the phylum: | Cnidaria |
| Hydra and Obelia belong to the class: | Hydrozoa |
| True jellyfish belong to the class: | Scyphozoa |
| Box jellyfish belong to the class: | Cubozoa |
| Sea anemone and coral belong to the class: | Anthozoa |
| name of the stinging cells | cnidocyte |
| name of the stinging organelle | nematocyst |
| location of highest concentration of cnidocytes | tentacles |
| type of cnidarian symmetry | radial |
| two body types of cnidarians are medusa and _____ | polyp |
| T/F some cnidarians have a skeleton. | true |
| T/F some cnidarians are terrestrial | false |
| the two body layers of a cnidarian are the epidermis and ____ | gastrodermis |
| the gel like connective tissue | mesoglea |
| the gut | gastrovascular cavity |
| type of cnidarian digestive system | incomplete |
| do cnidarians have one or two openings in their digestive system? | one |
| what is the brain like structure in cnidarians called? | nerve net |
| T/F cnidarians have both longitudinal and circular muscle | true |
| T/F cnidarians have both respiratory and excretory systems | false |
| which body form is sessile or sedentary? | polyp |
| which body form has tentacles and mouth facing upward? | polyp |
| which body form is free floating or swimming? | medusa |
| which body form has tentacles and mouth facing downward | medusa |
| T/F hydrozoa have both polyp and medusa forms | true |
| T/F scyphozoa have both polyp and medusa forms | true, but polyp stage is very limited |
| T/F cubozoa have both polyp and medusa forms | true, but polyp stage is very limited |
| T/F anthozoa have both polyp and medusa forms | false, only polyp |
| which body form typically uses asexual reproduction? | polyp |
| what structures are used for asexual reproduction | buds |
| T/F only medusa use sexual reproduction | false |
| what term means hermaphrodite | monoecious |
| what term means separate sexes | dioecious |
| T/F most cnidarians are dioecious | true |
| T/F the mesoglea is thicker in medusa than polyp forms | true |
| which body layer contains the nerves? | gastrodermis and epidermis |
| T/F colonial polyps such as coral are sessile | true |
| T/F some solitary polyps can tumble or inchworm along | true |
| T/F medusa move by expelling water from the aboral surface | false |
| T/F cnidarians can kill and eat prey much larger than themselves | true |
| cnidarians use ______ digestion by secreting digestive enzymes into the gastrvascular cavity | extracellular |
| cnidocytes contain toxins, barbs, or ___ | adhesive |
| the nematocyst is discharged using ___ pressure | osmotic |
| these cells are similar to stem cells in that they can form any of the other type of cells | interstitial |
| these cells provide protection and movement | epitheliomuscular |
| these cells secrete mucus | gland |
| these cells bring water/food into the mouth and help to circulate food through the gastrovascular cavity | nutritive-muscular |
| Which type of reproduction do the class hydrozoa use? | both sexual and asexual |
| T/F most hydrozoa are colonial | true |
| Class scyphozoa only have a polyp stage as a ___ | larva |
| Jellyfish can reach a length of ___ meters | 70 |
| this is the balance sense organ and simple eye on the rim of a jellyfish bell | rhopalium |
| where does jellyfish fertilization occur | in gastric pouches |
| where are the tentacles located in cubozoa? | one the corners of the bell |
| which class creates reef systems? | anthozoa |
Created by:
Mrs. Bridgman