Which of the following have an open circulatory system?

1. Frog

2. Earthworm

3. Pigeon

4. Cockroach

Subtopic:  Cockroach: Circulatory System |
 93%
Level 1: 80%+
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Which of the following is correct regarding the morphology and anatomy of cockroach?
1. The forewings are metathoracic and used in flight.
2. Anal cerci are seen only in male cockroaches.
3. Blood vascular system is of closed type.
4. The vision is mosaic.
Subtopic:  Cockroach: Abdomen | Cockroach: Circulatory System | Cockroach: Compound Eye | Cockroach:Male Reproductive System | Cockroach: Female Reproductive System |
 89%
Level 1: 80%+
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Consider the given two statements:
Statement I: The heart of a cockroach is an elongated muscular tube with chambers and ostia.
Statement II: Cockroaches have a closed circulatory system.
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic:  Cockroach: Circulatory System |
 85%
Level 1: 80%+
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A unique vascular connection between the digestive tract and liver is called _______________ .
1. Hepato–pancreatic system
2. Hepatic portal system
3. Renal portal system
4. Hepato–cystic system
Subtopic:  Cockroach: Circulatory System |
 81%
Level 1: 80%+
NEET - 2022
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