MCQ
What is the similarity between gymnosperms and angiosperms?
- AOrigin of ovule and seed is similar in both.
- BEndosperm is formed before fertilization in both.
- CBoth have leaves, stem and roots.
- DPhloem of both have companian cells.
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$CO _{2}+ H _{2} O \stackrel {A} {\rightleftharpoons} H _{2} CO _{3} \stackrel {B} {\rightleftharpoons} \rightleftharpoons HCO _{3}^{-}+ H ^{+}$