What are labelled phases A, B, and C in the below given sigmoidal growth curve?
Correct answer: D. A: Lag, B: Log, C: Stationary
- A. A: Stationary, B: Log, C: Lag
- B. A: Lag, B: Stationary, C: Log
- C. A: Log, B: Lag, C: Stationary
- D. A: Lag, B: Log, C: Stationary
Explanation
When a graph is plotted taking into consideration time on one hand and growth rate, on the other hand, an S-shaped curve is obtained. It is called the "grand period of growth". This curve mainly shows four phases of growth: 1. Initial slow growth (lag phase). 2. The rapid period of growth (log phase), where maximum growth is seen in a short period. 3. The diminishing phase, where growth will be slow. 4. Stationary phase, where finally growth stops.
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Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
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