PhylumEchinodermata starfish dissection Starfish external structure ex...

Phylum EchinodermataÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â starfish dissection Â Â Â Â Â Â Â Starfish external structure examination Identify: Oral surface Mouth Tube feet Ambulacral groove Aboral surface Arm Spines Central disk Madreporite List examples for the following classes. Class...

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Biology

PhylumEchinodermataÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
starfish dissection
Â Â Â Â Â Â Â Starfish external structure examination
Identify:
Oral surface
Mouth
Tube feet
Ambulacral groove
Aboral surface
Arm
Spines
Central disk
Madreporite
List examples for the following classes.
Class Asteroidea
Class Ophiuroidea
Class Crinoidea
Class Echinoidea
Class Holothuroidea

Answer & Explanation Solved by verified expert

3.6 Ratings (696 Votes)

Ans1 The lower surface of the body kept towards the substraum is flat and called oral surface The upper surface of body is convex and is called aboral surface aoral surface Mouth circular aperture at the top of 5rayed depression at the center of the oral surface of the central side The depression is known as Actinostome The mouth See Answer

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