MCQ
Bones formed by ossification of a tendon is called.
- ADermal bone.
- ✓Sesamoid bone.
- CMembrane bone.
- DCartilage.
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Width $-$ Length $-$ Thickness
Identify the correct option for the three blanks $A, B$ and $C$
| Gland | Secetion | Effect on Body |
| $A$ | Oestrogen | Maintenance of secondary sexual characters |
| Alpha cells of islets of Langerhans | $B$ | Raises blood sugar level |
| Anterior pituitary | $C$ | Over secretion leads to gigantism |
$(i)$ Contractile vacuole takes part in osmoregulation and excretion.
$(ii)$ Food vacuole is formed by engulfing the food particles.
$(iii)$ The vacuole is bound by a double membrane called tonoplast.
$(iv)$ Vacuole can occupy upto $90$ percent of the volume of the cell.