Question

Match the following list of animals with their level of organisation.

$\begin{array}{cc}\text{Level of organisation}& \text{Animal}\\ \text{A. Organ level}& \text{1. Pheretima}\\ \text{B. Cellular aggregate level}& \text{2. Fasciola}\\ \text{C. Tissue level}& \text{3. Spongilla}\\ \text{D. Organ System level}& \text{4. Obelia}\end{array}$

• A. $\begin{array}{cccc}A-2& B-3& C-4& D-1\end{array}$
• B. $\begin{array}{cccc}A-2& B-4& C-3& D-1\end{array}$
• C. $\begin{array}{cccc}A-4& B-1& C-2& D-3\end{array}$
• D. $\begin{array}{cccc}A-1& B-4& C-3& D-2\end{array}$

Answer 1

The correct option is A $\begin{array}{cccc}A-2& B-3& C-4& D-1\end{array}$

Pheretima which belongs to phylum Annelida possesses organ system level of organisation.

Fasciola of phylum Platyhelminthes possesses organ level of organisation.

Spongilla possesses cellular aggregate level of organisation which is under phylum Porifera.

Obelia under phylum Coelenterata possesses tissue level of organisation.