MCQ
Which of the following is incorrect?
- AMycoplasma is the smallest cell
- BBacteria are $3$ to $5\; \mu m$ in size.
- CThe largest cell is the egg of an ostrich.
- ✓Nerve cells are some of the smallest cells.
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$A.$ Cyanophyceae $a.$ Green colour
$B.$ Chlorophyceae $b.$ Blue green colour
$C.$ Phaeophyceae $c.$ Red colour
$D.$ Rhodophyceae $d.$ Brown colour
$I.$ It does not help in water conduction.
$II.$ It is also called alburnum.
$III.$ It is dark in colour but very soft.
$IV.$ It has tracheary elements, which are filled with tannin, resin, etc.
$\begin{array}{|l|l|} \hline Column\,\,-I & Column\,\,-II \\ \hline 1.\,\,97\,\,percent\,\,of\,\,O_2\,\,is\,\,transported & p.\,\,Bicarbonate \\ \hline 2.\,\,70\,\,percent\,\,of\,\,CO_2\,\,is\,\,transported & q.\,\,RBC \\ \hline 3.\,\,100\,\,\,ml\,\,of\,\,oxygenated\,\,blood & r.\,\,4\,\,\,ml\,\, \\ \hline 4.\,\,100\,\,\,ml\,\,of\,\,deoxygenated\,\,blood & s.\,\,5\,\,\,ml \\ \hline \end{array}$