(a) State two roles each of the following compounds in respiration:
(i) glucose;
(ii) oxygen.
(b) List two types of cellular respiration
(c) Name the structures of gaseous exchange in the following organisms:
| S/N | ORGANISM | STRUCTURE OF GASEOUS EXCHANGE |
| 1 | Ameoba | |
| 2 | Tilapia | |
| 3 | Adult Toad | |
| 4 | Grasshopper |
(d) Make a diagram, 6 cm to 8 cm long of an open stoma in a leaf and label fully.
Explanation
(a) Roles of the following compounds in respiration
(i) Glucose
Is broken down to give energy/ (ATP); carbon dioxide; and water is given off.
(ii) Oxygen
Oxidizes/ breaks down/ burns; the glucose, releasing energy completely.
(b) Types of cellular respiration
Aerobic; Anaerobic
(c) Structures of gaseous exchange
S/No. |
Organism |
Structures of gaseous exchange |
|
i. |
Amoeba |
Cell membrane/ entire body surface |
|
ii. |
Tilapia |
Gills |
|
iii. |
Adult toad |
Lungs, skin, buccal cavity |
|
iv. |
Grasshopper |
Trachea/tracheole |
(d) Diagram of an open stoma in leaf
