what are factors affecting respiration rate?

Basically whatever affects respiration rate is called LIMITING FACTOR (限制因素)

For example in this case, the most basic types of limiting factors for plants are physical barriers, sunlight, water, temperature, and soil.

A limiting nutrient is a chemical (nutrient) necessary for plant growth, but available in a concentration insufficient to support continued growth. Once the limiting nutrient is exhausted, plant growth ceases. In the case of algae in an aquatic ecosystem, populations stop expanding. If a limiting nutrient is introduced to a population, growth will be promoted until limitation by that or another nutrient or some other limiting factor occurs. It is usually the case—although not always—that in marine ecosystems it is nitrogen, and in fresh water ecosystems it is phosphorus, that are limiting. When neither is limiting, eutrophication (富養化作用) can result.

Although nitrogen (N) is limiting to production in most ecosystems, especially estuaries and coastal ecosystems, phosphorus (P) can also be a limiting nutrient in some coastal systems and most freshwater systems (Carpenter et al., 1998). It has been shown, though, that carbon (C), silica (Si), and iron (Fe) may also be limiting nutrients in marine ecosystems (Sundareshwar et al., 2003).

For example, in an aquarium, some limiting factors can be the size and the amount of dissolved carbon dioxide and oxygen is important, especially for the marine organisms. Other factors, such as lighting and the photosynthetic algae are significant as well.

There is a graph showing rate of limiting factor, alternatively e.g. in photosynthesis (光合作用) In the light dependent stage (光化作用) CO2 can be the limiting factor, as well as the amount of sunlight.

唔同Seedlings有唔同0既metabolic rate,
呢樣野係genes入面已經定左,
除左環境因素帶黎小小影响外, 唔會有太大改變.

factors affect the respiration rate are:
Concentration of gas (either CO2 or O2)
Light intensity
Differences in humidity
Living Condition (Sunny, windy, dry etc.)

唔同Seedlings有唔同0既metabolic rate,
呢樣野係genes入面已經定左,
除左環境因素帶黎小小影响外, 唔會有太大改變.

factors affect the respiration rate are:
Concentration of gas (either CO2 or O2)
Light intensity
Differences in humidity
Living Condition (Sunny, windy, dry etc.)