Porifera Quiz | Porifera Objective Type Questions and Answers

Questions
21 A Common Chamber In Sponges Is
A Spongoceol
B Incurrent Canal
C Radial Canal
D Excurrent Canals

Answer: Spongoceol
22 A Dried Piece Of Sponge Is Composed Of
A Spongin Fibres
B Cellulose Fibres
C Silk Fibres
D Elastic Fibres

Answer: Spongin Fibres
23 Many Sponges May Be Bigger Than Fishes, Yet They Do Not Have Respiratory Organs Because They
A Have Porous Body
B Are Sedentary
C Respire Anaerobically
D Do Not Require Them

Answer: Have Porous Body
24 Which Is Correct In Sponges
A Single Exit Innumerable Mouths
B Single Mouth Innumerable Exits
C A True Coelom
D Radial Symmetry

Answer: Single Exit Innumerable Mouths
25 Difference Between Sponges And Other Metozoa Is
A Sponges Possess Cellular Level Of Organisation
B Sponges Do Not Contain Blood
C Sponges Do Not Have Cell Division
D Sponges Do Not Have Division Of Labour

Answer: Sponges Possess Cellular Level Of Organisation
26 Mesohyl Layer Of Sponges Is
A Gelatinous
B Nonliving
C Noncellular
D All The Above

Answer: All The Above
27 Choanocytes Are
A Biflagellate
B Tetraflagellate
C Uniflagellate
D Multiflagellate

Answer: Uniflagellate
28 Mesogloea Of Sponges Consists Of
A Spicules
B Fibres
C Gelatinous Matrix
D All The Above

Answer: All The Above
29 Myocytes Of Sponges Are Modified
A Pinacocytes
B Choanocytes
C Amoebocytes
D Gland Cells

Answer: Pinacocytes
30 Myocytes Of Sponges Show
A Secretion Of Fibres
B Nervous Excitation
C Contractibility
D All The Above

Answer: Contractibility
31 Germ Cells Of Sponges Are Formed By
A Archaeocytes
B Pinacocytes
C Collencytes
D Choanocytes

Answer: Archaeocytes
32 A Sponge Can Be Distinguished From Other Animals By The Presence Of
A Choanocytes
B Hollow Body
C Coelenteron
D Dermal Papillae

Answer: Choanocytes
33 Larva Of Sponge Is Known As
A Amphiblastula Larva
B Planula Larva
C Trochophore Larva
D Glochidium Larva

Answer: Amphiblastula Larva
34 Gemmules Are Helpful In
A Survival In Drought
B Digestion
C Sexual Reproduction
D Secretion Of Spicules

Answer: Survival In Drought
35 Sycon Belong To The Class
A Hexactinellida
B Desmospongia
C Porifera
D Calcarea

Answer: Calcarea
36 The Only Fresh Water Species Of Sponges Is
A Spongilla
B Scypha
C Euspongia
D Oscarella

Answer: Spongilla
37 Common Bath Sponge Is
A Euspongia
B Euplectella
C Spongilla
D Syon

Answer: Euspongia
38 The Study Of Sponges Is Called
A Parazoology
B Protozoology
C Nematology
D None of the above

Answer: Parazoology
39 Boring Sponge Is
A Cliona
B Hyalonema
C Chalina
D Spongilla

Answer: Cliona
40 Flagellate Larva Of Sponges Is
A Planaria
B Planula
C Amphiblastula
D none of the above

Answer: Amphiblastula
junior administrative assistant jaa test series