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Choose the correct statements:
Important!
Note: In some questions both the statements are correct, so think and choose the best option.
A)
Statement 1: Certain animals such as Hydra and Sponges do not possess a circulatory system.
Statement 2: The waste materials such as the carbon dioxide is also removed by air.
B)
Statement 1: Animals such as hydra and sponges require a circulatory system.
Statement 2: In hydra and sponges wastes are removed by the excretory system.
C)
Statement 1: The blood of cockroach is colorless.
Statement 2: The blood of humans is red in colour.
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