Which is the correct sequence of air passage during inhalation?
A. Nostrils → larynx → pharynx → trachea → lungs

B. Nasal passage → trachea → pharynx → larynx → alveoli

C. larynx → nostrils → pharynx → lungs

D. nostrils → pharynx → larynx → trachea → alveoli

When does anaerobic respiration occurs in our body? Give an example.

Name the plant hormone which helps in stomata opening?

Give an Example of a plant in which stomata is absent?

A, Band Care three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes Rand air-tubes Sin its body.

(a) What are organisms (i) A (ii) B, and (iii) C?

(b) Name (i) P (ii) Q (iii) R, and (iv) S.

(c) Which organism/ organisms undergo aerobic respiration?

(d) Which organism/ organisms undergo anaerobic respiration?

Give two major differences between epidermal and guard cells.