MCQ
Diploblastic acoelomate condition is found in
- APlanaria
- BAscaris
- CRotifer
- ✓Sea anemone
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| Animal | Respiratory Organ | ||
| $A$ | Earthworm | $(i)$ | Moist cuticle |
| $B$ | Insects | $(ii)$ | Gills |
| $C$ | Fishes | $(iii)$ | Lungs |
| $D$ | Birds/Reptiles | $(iv)$ | Trachea |

$(I)$ $RBCs$ are formed in the white bone marrow in adults.
$(II)$ $RBCs$ have red colour because presence of protein called haemoglobin.
$(III)$ Nucleus is present in $RBC$ in most of the mammals and are biconcave in shape.
$(IV)$ A healthy individual has $12 -16\, gms$ of haemoglobin in every $1000\, ml$ of blood.