Biology · Kingdom Animalia
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The skeleton of sponges is made up of which of the following?:
- A
Calcium
- B
Silica
- C
Both A and B
- D
None of these
The skeletal structures of sponges are spicules and spongin fibres. Spicules are formed by carbonates of lime or silica in the form of needle-like pieces so, calcium and silica both are correct.
This option is also correct. The skeleton of sponges is also made up of calcium.
The skeleton of sponges is also made up of silica spicules or spongin fibres in most species.
The skeletal structures of sponges are spicules and spongin fibres. Spicules are formed by carbonates of lime or silica in the form of needle-like pieces so, so calcium and silica both are correct.
This option is incorrect as option C is correct
Tagged under Biology · Kingdom Animalia · 2021