Match the items given in Column I with those given in Column II: Column I Column II (i) Yeast (a) Earthworm (ii) Diaphragm (b) Gills (iii) Skin (c) Alcohol (iv) Leaves (d) Chest cavity (v) Fish (e) Stomata (vi) Frog (f) Lungs and skin (vii) Insects (g) Tracheae

(i) - (c) Yeast is a single-celled fungus. It converts sugar through fermentation, into carbon dioxide and alcohol. (ii) - (d) A large muscular sheet called diaphragm forms the floor of the chest cavity. Breathing involves the movement of diaphragm and the rib cage. (iii) - (a) Earthworms breathe through their skin. Oxygen and carbon dioxide pass through the earthworm's skin by diffusion. For diffusion to occur, the earthworm's skin must be kept moist. (iv) - (e) Stomata are typically found in plant leaves that controls the rate of gas exchange. Specialized cells known as guard cells surround stomata and function to open and close stomatal pores. (v) - (b) There are many organisms that live in water. Gills in fish help them to use oxygen dissolved in water. Gills are projections of the skin. Gills are well supplied with blood vessels for exchange of gases. (vi)-(f) Frogs can stay in the water as well as on land. Although frogs have a pair of lungs like human beings, they can also breathe through their skin, which is moist and slippery. (vii)-(g) Insects have a network of air tubes called tracheae for gas exchange. Oxygen rich air rushes through spiracles into the tracheal tubes, diffuses into the body tissue, and reaches every cell of the body. Similarly, carbon dioxide from the cells goes into the tracheal tubes and moves out through spiracles. Column I Column II (i) Yeast (c) Alcohol (ii) Diaphragm (d) Chest cavity (iii) Skin (a) Earthworm (iv) Leaves (e) Stomata (v) Fish (b) Gills (vi) Frog (f) Lungs and skin (vii) Insect (g) Tracheae

MEDIUM

Earn 100

Which of the following picture represents - exhaling?

50% studentsanswered this correctly

Important Questions on Respiration in Organisms

EASY

Science>Biology>Respiration in Organisms>Why do we respire?

Identify the wrong statements.
A) Cytochrome

C

is a small protein attached to inner surface of the outer membrane
B) Electrons from complex I are transferred to ubiquinone located within the inner membrane
C) The temperature optimum for photosynthesis of different plants does not depend on the habitat that they are adapted to.
D) There is no linear relationship between incident light and

{CO}_{2}

fixation rates at low light intensities.

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

Which of these statements is incorrect?

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

Which of the following is known as ‘Currency of Energy’

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

Which of the following statements is incorrect?

EASY

Science>Biology>Respiration in Organisms>Why do we respire?

During an oxidative phosphorylation the terminal electron acceptor is (fill up the blank).

EASY

Science>Biology>Respiration in Organisms>Why do we respire?

The number of electrons required to reduce one molecule of oxygen to water during mitochondrial oxidation is:

EASY

Science>Biology>Respiration in Organisms>Why do we respire?

The process of transfer of electrons from glucose to molecular oxygen in bacteria and mitochondria is known as

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

Oxidative phosphorylation is

EASY

Science>Biology>Respiration in Organisms>Why do we respire?

In which type of respiration, aerobic or anaerobic, more energy is released from the same amount of glucose (food) why?

HARD

Science>Biology>Respiration in Organisms>Why do we respire?

Is it good to sleep under a tree? (a) During the day (b) At night. Give reasons.

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

What are the two main parts in the process of respiration? What type of respiration takes place?
In the absence of oxygen
In the presence of oxygen

EASY

Science>Biology>Respiration in Organisms>Why do we respire?

List the similarities between aerobic and anaerobic respiration.

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

What are the two steps of respiration?

MEDIUM

Science>Biology>Respiration in Organisms>Why do we respire?

Match the items given in Column I with those given in Column II:

Column I	Column II
(i) Yeast	(a) Earthworm
(ii) Diaphragm	(b) Gills
(iii) Skin	(c) Alcohol
(iv) Leaves	(d) Chest cavity
(v) Fish	(e) Stomata
(vi) Frog	(f) Lungs and skin
(vii) Insects	(g) Tracheae