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Free download in PDF Porifera Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(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
(3)
Skeleton Of Sponges Is Produced By
[A]
Sclerocytes
[B]
Pinacocytes
[C]
Thescocytes
[D]
Choanocytes
(4)
Digestion In Sponges Is
[A]
Intercellular
[B]
Intracellular
[C]
Both A And B
[D]
Extracellular
(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
(6)
Digestion Of Food Is Completed In Sponges In
[A]
Trophocytes
[B]
Phagocytes
[C]
Thesocytes
[D]
Choanocytes
(7)
Collencytes Of Sponges Are Connected With Production Of
[A]
Spicules
[B]
Collagen Fibres
[C]
Spongin Fibres
[D]
none of the above
(8)
Cells Peculiar To Porifers Are
[A]
Porocytes
[B]
Choanocytes
[C]
Both A And B
[D]
Amoebocytes
(9)
Silicoblasts Occur In
[A]
Calcarea
[B]
Hexactinellida
[C]
Demospongia
[D]
Both B And C
(10)
Sponges Are
[A]
Ureotelic
[B]
Uricotelic
[C]
Ammonotelic
[D]
Both B And C
(11)
The Epidermis Of Sponge Is Made Up Of
[A]
Pinacocytes
[B]
Thesocytes
[C]
Archaeocytes
[D]
Choanocytes
(12)
Which Is The Inhalent Aperture In A Sponge?
[A]
Ostium
[B]
Prosopyle
[C]
Osculum
[D]
Apopyle
(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
(14)
The Nutrition In Sponges Is
[A]
Mixotrophic
[B]
Holophytic
[C]
Saprozoic
[D]
Holozoic
(15)
Paragastric Cavity Of Sponges Is Lined By
[A]
Choanocytes
[B]
Amoebocytes
[C]
Chromocytes
[D]
Pincocytes
(16)
Spicules Are Formed By
[A]
Scleroblasts
[B]
Calcoblasts
[C]
Silicoblasts
[D]
Spongioblasts
(17)
Spicule Producing Cells Of Sponges Are
[A]
Spongioblasts
[B]
Silicoblasts
[C]
Calcoblasts
[D]
Both B And C
(18)
The Precious Sponge Is
[A]
Euplectella
[B]
Hyalonema
[C]
Euspongia
[D]
None of the above
(19)
Choanocytes Are
[A]
Endodermal
[B]
Ectodermal
[C]
Mesodermal
[D]
none of the above
(20)
Internal Buds In Sponge Are Called
[A]
Gemmules
[B]
Buds
[C]
Gastrulae
[D]
none of the above
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