NTA Abhyas NEET2020BotanyBiological ClassificationPractice
Select the incorrect statement.
Options
- AThe cell envelope consists of a tightly bound three layered structure, of which plasma membrane is the innermo
- BA specialised differentiated form of cell membrane called mesosome is the characteristic of prokaryotes.
- CSurface structures of the bacteria, like flagella, pili and fimbriae play a major role in motility.
- DGas vacuoles are found in blue green and purple and green photosynthetic bacteria.
Correct answer
C. Surface structures of the bacteria, like flagella, pili and fimbriae play a major role in motility.
Step-by-step solution
Besides flagella, Pili and Fimbriae are also surface structures of the bacteria but do not play a role in motility. The pili are elongated tubular structures made of a special protein. The fimbriae are small bristle like fibres sprouting out of the cell. In some bacteria, they are known to help attach the bacteria to rocks in streams and also to the host tissues.