MCQ
Characteristic feature of aves is
- APresence of beak and features
- BAbility to lay eggs
- CAir spaces in lungs
- ✓All the above
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$(i)$ Glycocalyx is the outermost envelope in bacteria.
$(ii)$ The glycocalyx could be a loose sheath called capsule.
$(iii)$ The glycocalyx may be thick and tough called slime layer.
$(iv)$ A special structure formed by the plasma membrane is called mesosome.
$(v)$ Small bristle like fibres sprouting out of the cell are called fimbriae.