791. Of the following which one is not included in Proterostomes?
A. Arthropods
B. Hemichordates
C. Annelids
D. Molluses

792. Coelom that develops from the archenteron as outpouching is__________?
A. Pseudocoelom
B. Enterocoelom
C. Schizocoelom
D. None of these

793. Of the following which one is not found in series proterostomia?
A. Annelida
B. Arthropoda
C. Mollusea
D. Echinodermata

794. In most triploblasts after embryonic development the three layers are represented as___________?
A. Separate layers of cells
B. Structures formed from them
C. Structures associated with them
D. Their functions in body

795. The function of coelom is__________?
A. To increase the size of the animals
B. To help in the functioning of reproductive system
C. To provide space for the development of organs and systems
D. None of these

796. A sponge of Antarctica which is more than a meter tall is____________?
A. Scolymastra joubini
B. Euplectella
C. Spongilla
D. Leucoselenia

797. The sponges in which sperms develop first are included in the category of__________?
A. Peritandrous
B. Pertandrous
C. Protendrous
D. Protandrous

798. The skeleton of sponges is made up of___________?
A. Calcium
B. Silica
C. Both of these
D. None of these

799. Sperms released in water are carried to the mesenchyme in sponges by__________?
A. Amoeboid cell
B. Stipules
C. Spicules
D. Spines

800. The single main opening of the sponge cavity is____________?
A. Osculum
B. Ostia
C. Spongocoel
D. None of these

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