MCQ
The external skeleton of Arthropoda is formed by :
- ACellulose
- BTubulin
- ✓Chitin
- DKeratin
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$(a)$ Large number of scattered vascular bundles surrounded by bundle sheath.
$(b)$ Large conspicuous parenchymatous ground tissue.
$(c)$ Vascular bundles conjoint and closed.
$(d)$ Phloem parenchyma absent. Identify the category of plant and its part
| Column $I$ | Column $II$ | ||
| $A.$ | Aleurone layer | $i.$ | without fertilization |
| $B.$ | Parthenocarpic fruit | $ii.$ | Nutrition |
| $C.$ | Ovule | $iii.$ | Double fertilization |
| $D.$ | Endosperm | $iv.$ | Seed |
$R -$ Blood drained from a convenient artery is pumped into dialyzing unit after adding anti heparin.