$A.$ Cyanophyceae $a.$ Green colour
$B.$ Chlorophyceae $b.$ Blue green colour
$C.$ Phaeophyceae $c.$ Red colour
$D.$ Rhodophyceae $d.$ Brown colour
- A$Aa, Bb, Cc, Dd$
- B$Ab, Bc, Cd, Da$
- ✓$Ab, Ba, Cd, Dc$
- D$Ad, Bd, Ca, Db$
$A.$ Cyanophyceae $a.$ Green colour
$B.$ Chlorophyceae $b.$ Blue green colour
$C.$ Phaeophyceae $c.$ Red colour
$D.$ Rhodophyceae $d.$ Brown colour
$(B)$ Chlorophyceae -The green colour is due to presence of a chl $ -a$ , $chl. -b,$ xanthophylls and carotens.
$(C)$ Phaeophyceae -Brown colour is due to presence of pigment 'fucoxanthin'.
$(D)$ Rhodophyceae -Colour is red due to presence of a red pigment ($r-$ $phycocyanin$) in the chromatophores.
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$I.$ New leaves formation
$II.$ Chloroplast formation in leaves
$III.$ Lateral shoot formation
$IV.$ Adventitious shoot formation
$V.$ Rooting on stem cuttings
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