Which animal has an open transport system?

Question

Which animal has an open transport system??  
A. Grasshopper  
B. Earthworm  
C. Dolphin  
D. Chicken

Accepted Answer

Correct Answer: (A)Grasshopper. 
Rationale: The animal with an open transport (circulatory) system is the grasshopper.In an open circulatory system, the circulating fluid (called hemolymph) is not completely enclosed within blood vessels. Instead, it is pumped by the heart into body cavities (hemocoel), where it directly bathes the organs and tissues. This system is common in arthropods such as insects, spiders, and crustaceans. It is simpler and operates under lower pressure than a closed circulatory system.A) GrasshopperGrasshoppers are insects, and insects belong to the phylum Arthropoda. Arthropods have an open circulatory system in which hemolymph leaves the heart through short vessels and flows freely around internal organs before returning to the heart through openings called ostia. This direct bathing of organs is the defining feature of an open transport system.B) EarthwormEarthworms have a closed circulatory system. Their blood remains inside blood vessels at all times and is pumped through dorsal and ventral vessels with the help of five pairs of aortic arches (often called “hearts”). Because the blood is confined to vessels, this is not an open system.C) DolphinDolphins are mammals and possess a closed circulatory system. Their blood is pumped by a four-chambered heart and flows through arteries, veins, and capillaries. Oxygen and nutrients are transported efficiently under high pressure, which is typical of closed systems.D) ChickenChickens are birds and also have a closed circulatory system. Like mammals, they have a four-chambered heart and a fully enclosed network of blood vessels for circulation.ConclusionOnly the grasshopper has an open transport system, where the circulating fluid is not confined to blood vessels but instead flows freely around body organs. Therefore, the correct answer is A) Grasshopper

Which animal has an open transport system?

A
Grasshopper

B
Earthworm

C
Dolphin

D
Chicken

The animal with an open transport (circulatory) system is the grasshopper.

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Related Questions

Which animal has an open transport system?

A Grasshopper B Earthworm C Dolphin D Chicken

The animal with an open transport (circulatory) system is the grasshopper.

Topic Flashcards

Mini Quiz

Related Questions

A
Grasshopper

B
Earthworm

C
Dolphin

D
Chicken