- ✓Prothallus
- BProtonema
- CLeafy stage
- DStrobili
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(i)$ Each step or rank in hierarchy is called taxonomic category.
$(ii)$ Species is a group of individual organisms with fundamental similarities capable of breeding among themselves.
$(iii)$ Taxonomic studies of all unknown organisms have led to the development of common categories like kingdom, phylum or division, class, order, family, genus and species.
$(iv)$ Lower the category, greater is the difficulty of determining the relationship to other taxa at the same level.

| List $I$ | List $II$ |
| $A.$ Lipase | $I.$ Peptide bond |
| $B.$ Nuclease | $II.$ Ester bond |
| $C.$ Protease | $III.$ Glycosidic bond |
| $D.$ Amylase | $IV.$ Phosphodiester bond |
Choose the correct answer from the options given below :
$(i)$ Provides shape to the cell.
$(ii)$ Protects the cell from mechanical damage and infection.
$(iii)$ Helps in cell to cell interaction.
$(iv)$ Provides barrier to undesirable macromolecules.