MCQ
Choose correct pair.
- AUnicellular algae - kelps
- BColonial algae - Chlamydomonas
- ✓Filamentous algae - Ulothrix
- DIsogamous reproduction - fucus
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$A$. The flowers of Vallisneria are colourful and produce nectar.
$B$. The flowers of water lily are not pollinated by water.
$C$. In most of water-pollinated species, the pollen grains are protected from wetting.
$D$. Pollen grains of some hydrophytes are long and ribbon like.
$E$. In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below.

$I.$ Differentiation
$II.$ Redifferentiation
$III.$ Dedifferentiation
Select the right combination from the given option
| Column $- I$ | Column $- II$ |
| $(1)$ Monocot stem | $(a)$ Bulliform cells |
| $(2)$ Monocot root | $(b)$ Casperian strips |
| $(3)$ monocot leaf | $(c)$ Polyarch xylem bundles |
| $(d)$ Vascular bundles conjoint and closed |