Choose the dissimilarity that helps to classify plants and animals in different groups 

1) presence of cell wall

2) presence of plastids

3) presence of cell membrane

4) presence of membrane-bounded organelles.

1 and 2

Plant has a cell wall made up of cellulose material in the cell  and cell membrane . Animal cells have only cell membranes.

Plastids organelles are missing in the animal cell.

Both plant cells and animal cells are eukaryotic cells.

Hence, option 1 and 2 are the correct answers.