Question : Which of the animal phylum's listed have the following traits (there can be more than one right answer to each question)
Silicea, Calcarea, Ctenophora, Cnidaria, Echinodermata, Chordata, Platyhelminthes, Rotifera, Ectoprocta, Brachiopoda, Mollusca, Annelida, Nematoda, Arthropoda
Diploblasts, Spongocoel, Visceral Mass, Lophophore, Alimentary Canal, Mutualisms with Xoozanthellae, The ability to fly
Answer : Some of these options are not phylums but:
Diploblasts are in jellyfish and hydras so ctenophora and cnidaria.
Spongocoel are in sponges so calcarea
Visceral Mass is in Mollusks
Lophophore is in brachiopods
An alimentary canal is in Chordates, Plathyhelminthes, Echinoderms (sea cucumber) any animal with a hole for food entrance and a hole connected for waste. Arthropods, Annelids, Nematoads...
Any association between two organisms benefitting each is Mutualism. Chordata, Arthropoda, maybe others.
Xoozanthellae are in Ctenophora and Cnidaria.
And the ability to fly is found in chordates and arthropods.
Question : Belongs to the Phylum Chordates and class-Pisces.It is a vertebrate.
Answer : Scoliodon , cartilagenous fish has mouth like dog which has following features :Body is covered by minute placoid scales or dermal denticles.
Intestine has a spiral valve or scroll valve. Alimentary canal opens out by cloaca.
Caudal fin is heterocercal i.e., it has two unequal lobes. The dorsal lobe is large and the ventral lobe is small.
Due to protruded snout its face looks like that of dog.
Question : I have to right an essay explaining these but I don't know what they are in the first place
8 Secretions, hormones, nerves
If you know some of these please answer, thanks :]
Answer : Take a look at this web site, which has the whole thing: