Animal diversity mcqs with answers part 3 | Phylum Porifera mcqs with answers

1. Which one of the following is applicable to Phylum Porifera?

A) Protoplasmic grade of organisation
B) Cellular grade of organisation
C) Tissue grade of organisation
D) Organ grade of organisation

ANSWER= (B) Cellular grade of organisation

2. Members of phylum Porifera are?

A) Free swimming
B) Bilaterally symmetrical
C) Radially symmetrical
D) Biradially symmetrical

ANSWER= (C) Radially symmetrical

3. Members of the phylum Porifera lack the power of _________?

A) Locomotion
B) Respiration
C) Nutrition
D) Reproduction

ANSWER= (A) Locomotion

4. Members of the phylum Porifera are _________?

A) Coelomate
B) Pseudocoelomate
C) Coelomate
D) Haemocoelomate

ANSWER= (D) Haemocoelomate

5. The cavity enclosed by endodermal cells in sponges is known as __________?

A) Spongocoel
B) Haemocoel
C) Pseudocoel
D) Coelenteron

ANSWER= (A) Spongocoel

6. Ostia and osculum are found in members of the phylum _________?

A) Porifera
B) Coelenterata
C) Platyhelminthes
D) Anneilda

ANSWER= (A) Porifera

7. Choanocytes cells are found in ________?

A) Protozoa
B) Coelenterates
C) Sponges
D) Flatworms

ANSWER= (C) Sponges

8. Classifications of the phylum Porifera is based on _________?

A) Locomotor organs
B) Nature of skeleton
C) Mode of reproduction
D) Nature of excretory products

ANSWER= (B) Nature of skeleton

9. In sponges, digestion is __________?

A) Intracellular
B) Extracellular
C) First extracellular than intracellular
D) First intracellular followed by extracellular

ANSWER= (A) Intracellular

10. Canal system is the unique feature of phylum __________?

A) Porifera
B) Coelenterata
C) Platyhelminthes
D) Echinodermata

ANSWER= (A) Porifera

11. The simplest type of canal system is ________ type?

A) Ascon
B) Sycon
C) Leucon
D) Rhagon

ANSWER= (A) Ascon

12. Sponges are _________?

A) Terrestrial
B) Mostly marine
C) Freshwater
D) Estuarine

ANSWER= (B) Mostly marine

13. Skeleton of sponges is ___________?

A) Calcareous
B) Siliceous
C) Spongin fibres
D) All

ANSWER= (D) All

14. Skeleton of sponges is secreted by ________?

A) Scleroblasts
B) Porocytes
C) Choanoderm
D) Pinacoderm

ANSWER= (A) Scleroblasts

15. Which one of the following is true about sponges?

A) Ostia and osculum
B) Choanocytes
C) Canal system
D) All

ANSWER= (D) All

16. Which one of the following is different?

A) Mono axon
B) Tri axon
C) Tetra axon
D) Axon

ANSWER= (D) Axon

17. Spongocoel is lined with?

A) Choanocytes
B) Pinacocytes
C) Nematocytes
D) Mycocytes

ANSWER= (A) Choanocytes

18. Which one of the following is a freshwater sponge?

A) Euspongia
B) Hippospongia
C) Cliona
D) Spongilla

ANSWER= (D) Spongilla

19. Venus flower basket belongs to the phylum ___________?

A) Porifera
B) Coelenterata
C) Protozoa
D) Echinodermata

ANSWER= (A) Porifera

20. Locomotion does not take place in ________?

A) Earthworms
B) Octopus
C) Sycon
D) Hydra

ANSWER= (C) Sycon