Select the wrong statement.

1.  Bacterial cell wall is made up of peptidoglycan

2.  Pili and fimbriae are mainly involved in motility of bacterial cells

3.  Cyanobacteria lack flagellated cells

4.  Mycoplasma is a wall-less microorganism

The structures that help some bacteria to attach to rocks and/or host tissues are

1. Rhizoids

2. Fimbriae

3. Mesosomes

4. Holdfast

Match the following and select the correct answer : 
List - I 
A) Centriole 
B) Chlorophyll 
C) Cristae 
D) Ribozymes 
List – II 
(i) Infoldings in mitochondria 
(ii) Thylakoids 
(iii) Nucleic acids 
(iv) Basal body cilia or flagella

1. A-iv B-ii C-i D-iii

2. A-i B-ii C-iv D-iii

3. A-i B-iii C-ii D-iv

4. A-iv B-iii C-i D-ii

Flagella of prokaryotic and eukaryotic cells differ in :-

1. Location in cell and mode of functioning

2. Microtubular organization and type of movement

3. Microtubular organization and function

4. Type of movement & placement in cell 

Mitotic spindle is mainly composed of which protein :-
1. Actin
2. Tubulin
3. Actomyosin
4. Myoglobin

Microtubules absent in : -
1.  Mitochondria
2.  Flagella
3.  Spindle fibres
4.  Centriole

Role of microtubules :
1.  To help in cell division
2.  Cell membrane formation
3.  Respiration
4.  Pinocytosis