There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.
Which of the animals could be Amoeba?
Which of the animals could be frog?
Which animal could be fish?
Which animal could be grasshopper?
Which animal could be earthworm?
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T is Amoeba.
Q is frog.
P is fish.
S is grasshopper.
R is earthworm.
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An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-black colour with dilute iodine solution.
What is (i) organism A, (ii) food B and (iii) food H?
What are C and D?
Name (i) green coloured substance E, and (ii) organ F.
If a person holds his breath after expiration for about 25sec, would there be occurrence of any exchange of respiratory gases in the lungs during this period? Explain.