Everyday Science MCQs

5120 MCQs  (Page 400 of 512)

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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
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A sponge of Antarctica which is more than a meter tall is____________?
A. Scolymastra joubini
B. Euplectella
C. Spongilla
D. Leucoselenia
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The sponges in which sperms develop first are included in the category of__________?
A. Peritandrous
B. Pertandrous
C. Protendrous
D. Protandrous
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The skeleton of sponges is made up of___________?
A. Calcium
B. Silica
C. Both of these
D. None of these
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Inner layers of the sponges are made up of__________?
A. Pinacocytes
B. Choanoderm
C. Choanoytes
D. Pinacoderm
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Of the following which one is not included in Proterostomes?
A. Arthropods
B. Hemichordates
C. Annelids
D. Molluses
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Coelom that develops from the archenteron as outpouching is__________?
A. Pseudocoelom
B. Enterocoelom
C. Schizocoelom
D. None of these
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Of the following which one is not found in series proterostomia?
A. Annelida
B. Arthropoda
C. Mollusea
D. Echinodermata
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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
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The skeleton of the sponges is in the form of variously shaped needle like structures called___________?
A. Stripules
B. Spicules
C. Brails
D. Spines
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Word of the Day
27 Jul
Widen
make or become wider.
چوڑا ہونا، کشادہ کرنے کا عمل

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