Phylum Porifera MCQs with Answers

Phylum Porifera MCQs

Hello students, our next topic for the MCQ is ‘PHYLUM PORIFERA’. Robert Grant was the one who coined the term Porifera. These are most likely marine water forms and some live in fresh water. These are radially symmetrical or asymmetrical. All the sponges are multicellular organisms without tissue and have cellular grade of organization. Sponge body is consists of outer pinacoderm and inner choanoderm.

The following MCQ will give you more information about the topic.

 

MCQ.1):Phylum Porifera organisms are multicellular and bears ……………………

a)Spine

b) Pores

c) Scales

d) Chitin

 

MCQ.2):In the phylum Porifera, excretion and respiration is with the help of ……………………

a)Diffusion

b)Epithelium

c) Skin

d)By Pseudopodia

 

MCQ. 3):Which of the following cells help to pump water in and out of the sponge?

a)Pinacocytes

b) Asconoid

c) Spongocoel

d)Collar cells

 

MCQ.4):The choanocytes are the simplest type among canal system that lie in the large chamber and the chamber is called as ……………………………

a) Canals

b) Spongocoel

c) Spicules

d) Porocyte

 

MCQ.5):…………………………..Is considered as the major plan for sponges and for it permits greater size and more efficient water circulation.

a) Asconoid

b) Syconoid

c) Leuconoid

d)Both a) and c)

 

MCQ.6):The organisms body which belongs to phylum Porifera has endoskeleton which is made up of ………………………

a)Spicules

b)Osculum

c)Ostium

d)Choanocytes

 

MCQ.7):The class calcarea or Calcispongiae have spicules of ………………….

a)Cysts

b)Carbon

c)Calcium carbonate

d)Phosphorous

 

MCQ.8):The leucosolenia is also called as ………………………

a)Green sponge

b)Spiny sponge

c)Black sponge

d)Orange pipe sponge

 

MCQ.9):The ………………..Has similar characteristics with leucosolenia but only differ with a kind of tube i. e. intertwined tube.

a)Clathrina

b)Scypha

c)Calcarea

d)Orange sponge

 

MCQ.10):……………………. Is referred to Venus flower basket.

a)Demospongea

b)Carterispongia

c)Euplectella

d)Bath spongia

 

Answer

1)b) Pores

2)a) Diffusion

3)d) Collar cells

4)b) Spongocoel

5)c) Leuconoid

6)a) Spicules

7)c) Calcium carbonate

8)d) Orange pipe sponge

9)a) Clathrina

10)c) Euplectella


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