MCQ
Malpighian tubules are the excretory structures of
- ✓Insects
- BMammals
- CBirds
- DReptiles
A survey of animal kingdom presented a variety of excretory structures
$(i)$ Invertebrate have simple tubular type of excretory organs
$(ii)$ Vertebrate have complex tubular form called the kidney
$(iii)$ Platyhelminthes (Flatworm planaria) Protonephridia of flame cells are excretory organs
$(iv)$ Some Annelids and Cephalochordate Protonephridia concerned primarily osmoregulations
$(v)$ Earthworm and Annelids Nephridia is the excretory organ
$(vi)$ Insect Malpighian tubules are the excretory organs. Antennal glands or green glands performs the excretory functions in crustaceans like prawn
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$(i)$ Unicellular, colonial, filamentous, symbiotic or free living.
$(ii)$ The colonies are surrounded by a gelatinous sheath.
$(iii)$ Some can fix atmospheric nitrogen in specialized cells called heterocysts.
$(iv)$ They often form blooms in water bodies.
| Row | $I$ | $II$ | $III$ |
| $A$ | digestive | hormones | circulatory |
| $B$ | endocrine | enzymes | lymphatic |
| $C$ | endocrine | hormones | circulatory |
| $D$ | digestive | enzymes | lymphatic |