EVERYDAY SCIENCE

Detailed explanation-1: -Notes: Haemoglobin is found dissolved in the plasma of earthworm because they don’t have proper respiratory system and the hemoglobin is dissolved in plasma for the diffusion of gases and other materials.

Detailed explanation-2: -Complete Answer: The phylum Annelida belongs to the kingdom Animalia has the haemoglobin dissolved inside the plasma. The animals like earthworms belong to this category. In these animals the haemoglobin is not found in the RBC instead they are found dissolved in the plasma of the blood.

Detailed explanation-3: -Hemoglobin (Hgb or Hb) is the primary carrier of oxygen in humans. Approximately 98% of total oxygen transported in the blood is bound to hemoglobin, while only 2% is dissolved directly in plasma.

Detailed explanation-4: -So, the correct answer is ‘Earthworm’.

Detailed explanation-5: -The worm’s hemoglobin has evolved to transport oxygen for the worm. Complete Answer: Earthworm blood – unlike that of most invertebrates – contains haemoglobin, a protein which carries oxygen throughout its body. It is present in the blood plasma and contains a red-coloured compound called heme.