Porifera MCQs | Porifera Multiple Choice Questions and Answers

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Questions
1 Choanocytes In Sponges Are Present
A Line The Gastric Cavity
B On The External Body Surface
C In The Mesodermal Layer
D Located Between The Outer And Inner Layers

Answer: Line The Gastric Cavity
2 Most Common Method Of Reproduction In Sponges Is
A Budding
B Binary Fission
C Multiple Fission
D Sexual Reproduction

Answer: Budding
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3 Skeleton Of Sponges Is Produced By
A Sclerocytes
B Pinacocytes
C Thescocytes
D Choanocytes

Answer: Sclerocytes
4 Digestion In Sponges Is
A Intercellular
B Intracellular
C Both A And B
D Extracellular

Answer: Intracellular
5 One Of The Characteristic Features Of The Sponges Is The Presence Of
A Choanocyts
B Radial Symmetry
C A Central Cavity
D Vaselike Globular Body

Answer: Choanocyts
6 Digestion Of Food Is Completed In Sponges In
A Trophocytes
B Phagocytes
C Thesocytes
D Choanocytes

Answer: Trophocytes
7 Collencytes Of Sponges Are Connected With Production Of
A Spicules
B Collagen Fibres
C Spongin Fibres
D none of the above

Answer: Collagen Fibres
8 Cells Peculiar To Porifers Are
A Porocytes
B Choanocytes
C Both A And B
D Amoebocytes

Answer: Both A And B
9 Silicoblasts Occur In
A Calcarea
B Hexactinellida
C Demospongia
D Both B And C

Answer: Both B And C
10 Sponges Are
A Ureotelic
B Uricotelic
C Ammonotelic
D Both B And C

Answer: Ammonotelic
11 The Epidermis Of Sponge Is Made Up Of
A Pinacocytes
B Thesocytes
C Archaeocytes
D Choanocytes

Answer: Pinacocytes
12 Which Is The Inhalent Aperture In A Sponge?
A Ostium
B Prosopyle
C Osculum
D Apopyle

Answer: Ostium
13 The Intercommunicating Cavities In The Body Of A Sponge Constitute
A Canal System
B Water Vascular System
C Circulating System
D None Of The Above

Answer: Canal System
14 The Nutrition In Sponges Is
A Mixotrophic
B Holophytic
C Saprozoic
D Holozoic

Answer: Holozoic
15 Paragastric Cavity Of Sponges Is Lined By
A Choanocytes
B Amoebocytes
C Chromocytes
D Pincocytes

Answer: Choanocytes
16 Spicules Are Formed By
A Scleroblasts
B Calcoblasts
C Silicoblasts
D Spongioblasts

Answer: Scleroblasts
17 Spicule Producing Cells Of Sponges Are
A Spongioblasts
B Silicoblasts
C Calcoblasts
D Both B And C

Answer: Both B And C
18 The Precious Sponge Is
A Euplectella
B Hyalonema
C Euspongia
D None of the above

Answer: Euplectella
19 Choanocytes Are
A Endodermal
B Ectodermal
C Mesodermal
D none of the above

Answer: Endodermal
20 Internal Buds In Sponge Are Called
A Gemmules
B Buds
C Gastrulae
D none of the above

Answer: Gemmules

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