MCQs of Biology - Sponge skeleton – Multiple Choice Question

Question 1 of 9

1. Question

Classification of sponges is primarily based on:

Body plan
Skeleton
Canal system
Body organization

Question 2 of 9

2. Question

Endoskeleton of sponges is made up of:

Bone
Cartilage
Calcareous spicules
Calcareous or siliceous spicules or siliceous spicules and spongin fibres, or only spongin fibres

Question 3 of 9

3. Question

Spicules of sponges are named according to their:

Form
Size
Number of spines
Colour

Question 4 of 9

4. Question

Spicules of sponges are formed by:

Thesocytes
Porocytes
Pinacocytes
Thesocytes

Question 5 of 9

5. Question

Spicules are found in:

Sycon
Euspongia
Herdmania ans Sycon
Sycon and Euspongia

Question 6 of 9

6. Question

Silicoblast is one of the:

Scleroblasts
Porocytes
Calcoblasts
Thesocytes

Question 7 of 9

7. Question

The skeleton-secreting cells of Sycon would include:

Osteoblasts
Fibroblasts
Scleroblasts
Chondroblasts

Question 8 of 9

8. Question

Body of sponges is mainly composed of:

Spicules
Mesogloea
Nematoblasts
Spongin fibres

Question 9 of 9

9. Question

Glass sponges belong to the class:

Calcarea
Demospongiae
Tetractinellida
Hexactinellida

MCQs of Biology – Sponge skeleton

Biology - Sponge skeleton

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