Respiration in Organisms

Respiration in Organisms Worksheet-1

1. No energy is released during

(a) Exhalation                               (b) Inhalation

(c) Breathing                                 (d) All of these

2. The number of ATP molecules produced during anaerobic respiration is

(a) 20 molecules                           (b) 2 molecules

(c) 38 molecules                           (d) 382 molecules

Respiration in Organisms Worksheet-2

1. Three test-tubes are set up as shown.

At the start of the experiment, the indicator in each test-tube is red.

The indicator changes from red to yellow when exposed to increased levels of carbon dioxide.

What will be the colour of the indicator in each test-tube after two hours?

(a) a → Red; b → red; c → yellow

(b) a → Red; b → yellow; c → red

(c) a → Yellow; b → red; c → red

(d) a → Yellow; b → yellow; c → yellow

Respiration in Organisms Worksheet-3

1. Which of the following statements is incorrect?

(a) In earthworm exchange of gases occurs through the moist skin

(b) The breakdown of glucose in plant cells is similar to that in other living beings

(c) Respiratory organs such as tracheae and spiracles are found in insects as well as lower organisms

(d) Animals such as elephants, frogs, lizards, snakes have lungs in their chest cavities like that of human beings.

2. Which of the following statements are true/false?

(i)     In insects, circulating body fluids serve to distribute oxygen to tissues.

(ii)    Yeasts respire aerobically, therefore, they are used to make wine and beer.