MCQ
Middle lamella is made up of
- ACellulose
- BSuberin
- ✓Calcium and magnesium pectate
- DLignin
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| Excretory structure$/$ organ | Animals | ||
| $A$ | Protonephridia | $i.$ | Prawn |
| $B$ | Nephridia | $ii.$ | Cockroach |
| $C$ | Malpighian tubules | $iii.$ | Earthworm |
| $D$ | Green gland or Antennal gland | $iv.$ | Flatworms |