Differentiate aerobic respiration from anaerobic respiration. Mention the event that is common to both.

In the touch - me - not plant the leaves show movements. What type of movement have you observed? Discuss.

Differentiate extra-cellular digestion from intra-cellular digestion. Which one is an advanced form?

Observe the given model that can be used to demonstrate the breathing mechanism in human beings.

Name the structures which can be compared to:

(i) Lungs (ii) Diaphragm

(iii) Trachea (iv) Nostrils (Nose)

Observe the following figures:

Both the plants ‘A’ and ‘B’ were kept in sunlight after watering. The part of the leaf of plant ‘B’ which was inserted in the glass bottle containing KOH (Potassium hydroxide) did not turn blue in the iodine test/ starch test, indicating the absence of starch. The part of the leaf outside the bottle turns blue in the said test. Photosynthesis didn’t occur in that part of the leaf due to the non-availability of _____________ .

a) Sunlight b) Chlorophyll

c) CO₂ d) Water

(i) List out the factors which are available to the part of the leaf outside the bottle.