MCQ
The two glands located in the neck region are
- ✓Thyroid gland and parathyroid gland
- BPituitary gland and pineal gland
- CAdrenal gland and thymus
- DPineal gland and thyroid gland
| Thyroid and parathyroid gland | neck region |
| Pituitary gland and pineal gland | brain gland |
| Adrenal gland | over kidney |
| Thymus gland | dorsal surface of heart. |
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$(i)$ It is a membrane bound space found in the cytoplasm.
$(ii)$ It is bound by a single membrane called tonoplast.
$(iii)$ It contains water, sap, excretory products and other materials not useful to the cell.
$(iv)$ It has higher concentration of sap than the cytoplasm.
$(I)$ Central nervous system is ventral, solid and double
$(II)$ Gill slits are absent
$(III)$ Heart is ventral
$(IV)$ Post anal tail is absent