The circulatory system of earthworms is of close type with the heart, capillaries, and blood vessels. The fourth, fifth, and sixth segments consist of blood glands and these blood glands produce blood plasma with dissolved blood cells and hemoglobin. The supply of blood takes place from the heart to all body parts by contraction of vessels and heart. In the nerve cord gut and body wall, the supply of blood takes place from small blood vessels.
Answered by Abhisek | 1 year agoMention the function of the following
1. Ureters in frog
2. Malpighian tubules
3. Body wall in earthworm
Draw a neat diagram of the digestive system of frogs.
Match the terms in Column I with those in column II:
| Column I | Column II |
| (a) Compound epithelium | (i) Alimentary canal |
| (b) Compound eye | (ii) Cockroach |
| (c) Septal nephridia | (iii) Skin |
| (d) Open circulatory system | (iv) Mosaic vision |
| (e) Typhlosole | (v) Earthworm |
| (f) Osteocytes | (vi) Phallomere |
| (g) Genitalia | (vii) Bone |
Mark the odd one in each series:
1. Areolar tissue; blood; neuron; tendon
2. RBC; WBC; platelets; cartilage
3. Exocrine; endocrine; salivary gland; ligament
4. Maxilla; mandible; labrum; athorax; coxa
5. Protonema; mesothorax; metathorax; coxa
Distinguish between Simple glands and compound glands