1. Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?

(1).Low pCO₂, and High H⁺ concentration

(2). Low pCO₂, and High temperature

(3). High pO₂, and High pCO₂

(4). High pO₂, and Lesser H⁺ concentration

2. Match List I with List II:

Choose the correct answer from the options given below:

(1).A-II, B-I, C-IV, D-III

(2). A-I, B-III, C-II, D-IV

(3). A-II, B-IV, C-I, D-III

(4). A-III, B-II, C-IV, D-I

3. Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer from the following:

(1).The statement is false for both the environment

(2). The statement is true for water but false for land

(3). The statement is true for both the environment

(4). The statement is false for water but true for land