MCQ
Horsetail and fern are
- ABryophytes
- ✓Pteridophyte
- CAngiosperm
- DGymnosperm
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Pyruvic acid
$+ Co - A + NA D^{* i M g^{2+1} A+B+N D H}+H^{+i-2}$
$A$. Lenticels are the lens-shaped openings permitting the exchange of gases.
$B$. Bark formed early in the season is called hard bark.
$C$. Bark is a technical term that refers to all tissues exterior to vascular cambium.
$D$. Bark refers to periderm and secondary phloem.
$E$. Phellogen is single-layered in thickness.
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