State whether the following statement is true or false: Energy can be produced in cells without oxygen.

The trachea divides into two tubes at its lower end. What is the name of these tubes?

Why is the rate of breathing in aquatic animals faster than in terrestrial animals?

Which of the following statement$(s)$ is (are) correct?
$(i)$ Pyruvate can be converted into ethanol and carbon dioxide by yeast.
$(ii)$ Fermentation takes place in aerobic bacteria.
$(iii)$ Fermentation takes place in mitochondria.
$(iv)$ Fermentation is a form of anaerobic respiration.

If a plant is releasing carbon dioxide and taking in oxygen during the day,does it mean that there is no photosynthesis occurring? Justify your answer.

Describe the process of respiration in the following parts of a plant: $(a)$ Root. $(b)$ Stem. $(c)$ Leaves.