Question

D. Cockroach and earthworm
present in veins allow blood to flow only to
(6) In which animals is circulatory system absent ?
B. Human and fish
A. Birds and amphibians
C. Sponge and hydra
Fill in the blanks :[1 mark each]
(1) voelves
2) The blood vessel
lungs to the heart.
Albia
)
The upper two chambers of heart are called
Blood is transported to
by pulmonary
Doctors can get clues about the condition of our he
heartbeats through a stethoscope
Kedney
is an important ron​

Answer 1

Answer:

6- C

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