In connection with circulatory system valves are present

Options

A. Not only in heart and blood vessels of vertebrates and invertebrates, but in vertebrate lymphatic as well
B. Vertebrate heart only
C. Vertebrate heart and invertebrate hearts only
D. Vertebrate hearts, invertebrate hearts and their blood vessels

Answer

A

Explanation

Valves present in heart are bicuspid and tricuspid valve between atrium and ventricle that prevent backflow of blood. Lymphatic vessels also contain one – way valves to prevent the backflow of lymphatic fluid