The blood of Pheretima is:
Correct answer: D. Red with haemoglobin in plasma
- A. Blue with haemocyanin in corpuscles
- B. Blue with haemocyanin in plasma
- C. Red with haemoglobin in corpuscles
- D. Red with haemoglobin in plasma
Explanation
The circulatory or blood vascular system of earthworm is a closed system consisting of blood vessels and capillaries which ramify all parts of the body. Blood is composed of fluid plasma and colourless corpuscles, physiologically comparable to the leucocytes of the vertebrates. The red respiratory pigment, haemoglobin (or erythrocruorin) occurs dissolved in plasma. It gives a red colour to blood and aids in the transportation of oxygen for respiration.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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