MCQ
Oxygen finally reaches the lungs :
- ✓In alveoli
- BIn trachea
- CIn bronchus
- DIn bronchi
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$R$ - Cones are developed in selaginella and Equisetum.
$(i)$ Ascidia' $(ii)$ Cockroach
$(iii)$ Earthworm $(iv)$ Prawn
$(v)$ Silver fish $(vi)$ Snail
$(vii)$ Squid
| Gland | Secretion | Effect on body |
| $A$ | Estrogen | Maintenance of secondary sexual characters |
| Alpha cells of Islets of Langerhans | $B$ | Raises blood sugar level |
| Anterior pituitary | $C$ | Over secretion leads to gigantism |