Help
Options
Question
Cnidaria Have _____ symmetry, _________, Have a ___________ digestive system, ______ cells but no ______, and _______
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
Cnidarians nerve cells are _______ or ________ synapses
Remaining cards (22)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
zoo boo 1 Cnidarians
zoo boo 1
| Question | Answer |
|---|---|
| Cnidaria Have _____ symmetry, _________, Have a ___________ digestive system, ______ cells but no ______, and _______ | Radial, diploblastic, incomplete, nerve, brain, muscle |
| Cnidarians nerve cells are _______ or ________ synapses | non polar or bidirectional |
| Have both ________ and ________ digestion | intracellular and extracellular |
| Loss of medusa stage in some groups. _______ stage releases egg or sperm and _____ settles to form a new _______ stage | hydroid, planula, hydroid |
| Large complex hydroid | Sea anemones |
| Freshwater hydroid | Hydra |
| a small colonial polyp that exhibits polymorphism | Obelia |
| Part of a cnidarian that uses tentacles for prey | Gastrozooids |
| life cycle of cnidarians | medusa from the polyp of the cnidarian bud off and produce eggs or sperm to create a fertilized egg, then a zygote, then a planula, and divides into the polyp body and form multiple polyps (obelia) by asexual reproduction, that can repeat the cycle. |
| Physalia - Portuguese man-o-war | a pelagic (floating) colonial hydroid, not a medusa. |
| _________ reproduction plays an important role in a cnidarians life | asexual |
| The skeleton of a cnidarian is_______ and 3 things about it | Coral: Colonial cnidarians, Interconnected gastrovascular cavity, Produce a supporting skeleton. |
| sea fans and sea whips. Polyps connected by tubula gastrovascular cavities, 8 branched tentacles. Polyps can withdraw into a fleshy tissue, internal flexible protein skeletal rod. | Soft Corals |
| Polyps connected by sheet like gastrovascular cavities, many unbranched tentacles, external skeleton of calcium carbonate. | Hard Coral |
| Coral reef's have a symbiotic relationship with ________ _________ _______ | Single Cellular Algae |
| Biotic Benefits for algae in coral reefs | Nutrients and protection |
| Biotic Benefits for coral having algae | added food and oxygen, increased rate of limestone deposition due to less acidity in coral tissue.Coral tissue produces Carbonic acid from CO2 and the algae uses CO@ as a source for photosynthesis and removes this lowering the acidity of coral's tissue. |
| Abiotic factors: necessary for algal growth | 20 C or warmer. 30 N and S of the equator. Light: depths of 60m or less. shallow waters off continents and near volcanoes. |
| project seaward directly from the shore of an island or continent. | Fringing reef |
| separated a greater from the shore by a lagoon | Barrier reef |
| A roughly circular ring of islands formed of coral rock deposited around an extinct, sunken volcano and separated lagoon | atoll |
| region where sediments, reduced wave action, warmer temperatures, and lower oxygen levels interfere with coral growth. | lagoon |
| Conditions that threaten coral | sediments, pollutants, temperatures that are too warm: cause corals to expel their symbiotic algae, a phenomenon called “coral bleaching”. |
Created by:
wil96