MCQ
Which one of the following is not an essential element for plants?
- APotassium.
- BIron.
- ✓Iodine.
- DZinc.
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$(1)$ Glycolysis occurs in the cytoplasm of the cell.
$(2)$ During this one molecule of glucose is converted into two molecules of pyruvic acid.
$(3)$ $O_2$ is not used in this phase.
$(4)$ This phase is known as $TCA.$
$(a)$ secretion of secondary metabolities and their deposition in the lumen of vessels.
$(b)$ deposition of organic compounds like tannins and resins in the central layers of stem.
$(c)$ deposition of suberin and aromatic substances in the outer layer of stem.
$(d)$ deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
$(e)$ presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below:
| Column $-I$ | Column$- II$ |
| $(a)$. Cuscuta | $(i)$ Hygroscopic root |
| $(b)$. Rhizophora | $(ii)$ Stilt root |
| $(c)$. Vanda | $(iii)$ Haustorial root |
| $(d)$. Pandanus | $(iv)$ Respiratory root |