Question

What affects cellular respiration in plants?

Answer 1

Many factors affect cellular respiration in organisms:

Explanation:

`bb("FACTORS AFFECTING CELLULAR RESPIRATION")`

1. TEMPERATURE:

• Major limiting factor

• Optimum temperature-20-30 deg celsius

2. OXYGEN:

• In Aerobic `rarr`produces more energy{38ATP}

• In Anaerobic`rarr`produces less energy{2ATP}

3. `CO_2`{Indirectly affect respiration}:

• If `CO_2` concentration increases rate of respiration decreases in plants

• Increased concentration of `CO_2` concentration{>1%} stimulate ABA release and thus stomata become closed and hence reduces oxygen availability.

4. LIGHT:

• Indirectly affect respiration

• Rate of respiration increase in light intensity

• In twilight`rarr` morning and evening rate of photosynthesis and
  respiration will be 1:1 `rarr`If it occur due to light it is called
  light compensation point in such time there is no exchange of gases between plants and atmosphere

5. Hormones :

• IAA

• Cytokinin

• gibberlin

• ethylene{Increases Climateric Respiration}

6. Injury disease and wounds `to` enhance respiration

7. Respiratory Inhibitors:

cyanides, CO, Amytal, Azide, Dinitrophenol.

`rarr`hope it helps!