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In earthworm, 10th and 11th segments bea...

In earthworm, 10th and 11th segments bear loop-like broad vessel without valves, such vessels are known as

A

Lateral hearts

B

Latero-oesophageal hearts

C

Anterior loops

D

Dorsal-blood vessel

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Segments**: The question specifies that we are looking for vessels located in the 10th and 11th segments of the earthworm. 2. **Analyze the Options**: We have four options to consider: - Lateral hearts - Lateroesophageal hearts - Anterior loops - Dorsal blood vessels 3. **Evaluate Lateral Hearts**: - Lateral hearts are located in the 7th and 9th segments of the earthworm. Since the question specifies the 10th and 11th segments, this option is incorrect. 4. **Evaluate Lateroesophageal Hearts**: - Lateroesophageal hearts are found in the 12th and 13th segments. Again, since we are looking for vessels in the 10th and 11th segments, this option is also incorrect. 5. **Evaluate Anterior Loops**: - Anterior loops are broad vessels located in the 10th and 11th segments. They connect the supraesophageal vessel and the lateral esophageal vessel. This matches the criteria given in the question. 6. **Evaluate Dorsal Blood Vessels**: - Dorsal blood vessels run along the entire length of the earthworm and are not confined to specific segments. Therefore, this option does not fit the description provided in the question. 7. **Conclusion**: Based on the analysis, the correct answer is **anterior loops** as they are the vessels found in the 10th and 11th segments of the earthworm. ---
**Step-by-Step Solution:** 1. **Identify the Segments**: The question specifies that we are looking for vessels located in the 10th and 11th segments of the earthworm. 2. **Analyze the Options**: We have four options to consider: - Lateral hearts - Lateroesophageal hearts - Anterior loops ...
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