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Read the following statements and select...

Read the following statements and select the correct option
Statement 1 : The 4-chambered heart of birds is superior to the 4-chambered heart of crocodiles
Statement 2 : Crocodilian heart retains both systemic arches that join, causing mixing of blood in the dorsal aorta while avian heart has lost left systemic arch.

A

Both statements 1 and 2 are correct

B

Statement 1 is correct but statement 2 is incorrect

C

Statement 1 is incorrect but statement 2 is correct

D

Both statements 1 and 2 are incorrect

Text Solution

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The correct Answer is:
A
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NCERT FINGERTIPS-BODY FLUIDS AND CIRCULATION-Body Fluids And Circulation
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  2. Open circulatory system is present in underline(("i")) and underline((...

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  3. Read the following statements and select the correct option Statemen...

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  4. The given figure shows the vertical section of human heart. Identify t...

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  5. Which of the following is correct about human heart ?

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  6. Which of the following chambers of the heart has the thickest muscular...

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  7. Heart pumps blood more forcefully in older persons than younger ones d...

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  8. Pacemaker is situated in the

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  9. Read the following statements and select the correct option Stateme...

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  10. In which one of the following pairs, two terms represent the same thin...

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  11. Read the following statements and select the correct ones (i) Nodal ...

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  12. The given figure illustrates a section through the human heart. W...

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  13. Chordae tendineae are found in

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  14. The problem of electrical discontinuity caused in the normal heart by ...

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  15. Match column I with column II and select the correct option from the c...

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  16. Blood enters the heart because muscles of the

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  17. During ventricular systole

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  18. If due to some injury the chordae tendineae of the tricuspid valve of ...

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  19. In humans, blood passes from the post caval to the diastomic right atr...

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  20. The figure given below three stages in the cardiac cycle Which of...

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