The symmetry found in an animal which can be divided into two similar halves by one plane only is:

Explain the organisation of embryonic layers in animals.

Radial symmetry is generally exhibited by animals that have:

Differentiate between: Acoelomate and Pseudocoelomate.

The figures below represent diploblastic and triploblastic organization. Identify the correct labels for $P$ and $Q$.
$\quad\quad P \quad \quad Q$

Schizocoelomates and enterocoelomates are