Question

In which part of plant, rate of respiration is higher?

• A. Root and stem tip
• B. Buds
• C. Germinating seeds
• D. All of these

Answer 1

The correct option is C Germinating seeds

While many seeds remain green and photosynthetically active during their development (see below), chlorophyll is usually lost during late seed maturation. Therefore, seed germination (defined as radicle protrusion), as well as early seedling growth, is entirely heterotrophic, relying on respiratory metabolism. The oxidation of carbon reserves (starch, lipids, proteins) accumulated during seed maturation provides the energy required for germination, emergence and development of the seedling until transition to autotrophy. In nature, these events usually take days or weeks depending on species and environmental conditions, highlighting the importance of respiratory metabolism for seedling establishment (i.e. reaching autotrophic status). The rate of respiration is higher in germinating seeds reflecting the significant metabolic activity.
So answer is- germinating seeds.