MCQ
Which of the following important features are found in blue-green algae
- AAbundant secretion of pectin
- BPresence of phycocyanin $ -C$ as dominant pigment
- CNo plastids
- ✓All the above
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$I.$ partial pressure of $O_{2}$
$II.$ partial pressure of $CO _{2}$
$III.$ hydrogen ion concentration
$IV.$ temperature
Choose the correct option