In which class of the phylum Protozoa is Amoeba placed?

Give the difference between Diploblastic and Triploblastic organisms.

Explain: Segmentation.

Identify the correct labeling sequence for the given figure $A$.

Archenteron is lined with

Assume that a pencil box held in your hand represents a plant cell. In how many possible planes can it be cut? Indicate these cuts with the help of line drawings.