zoo boo 1 Cnidarians Word Scramble

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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