Q1 of 45 Page 178

Which process occurring in human body does not involve energy from respiration?

Contraction of heart, digestion and homeostasis (maintaining a constant body temperature) requires a lot amount of energy while diffusion is a passive process which occurs according to the concentration gradient. Thus it do not require energy expenditure.

More from this chapter

All 45 →
17

Raman kept a plant in his room. Adequate light was provided and the plant was extensively watered. Instead of flourishing the plant died. Raman asked his teacher for an explanation for the same.

Read the passage and answer the following questions.


(i) Even though the plant was watered, it soon died. Give reason.


(ii) How do plants respire? Name the organelle responsible for gaseous exchange in


(a) Herbaceous plants


(b) Woody plants


(iii) What values does Raman have in your opinion?

 18

After being taught about respiration in living organisms, aditi got confused as to how organisms like earthworm respire. As these organisms lack any special organs for respiration and breathing.

(i) How does earthworm respire when no specialised system is present in them?


(ii) Mention the major function of respiratory pigment.


(iii) What values do you observe in Aditi?

 2

Assertion (A) In the day time, CO2 generated during respiration is used up for photosynthesis.

Reason (R) There is no CO2 release during day.

 3

Which substances are produced by anaerobic respiration in yeast?