Sigmoid Growth Curve

Q. A typical growth curve in plants is

1. linear
2. zig-zag shaped
3. parabolic
4. sigmoid

Q.

Sigmoid curve showing the three distinct phases of growth follows the sequence of

1. Steady state, log phase and lag phase

2. Lag phase, log phase and steady phase

3. Log phase, lag phase and steady phase

4. Log phase, steady phase and lag phase

Q. Assertion :- A sigmoid curve is characteristic of plants growing in a natural environment.
Reason:- In natural conditions the supply of nutrients and food is ever increasing.

1. Both assertion and reason are true and reason is the correct explanation of assertion.
2. Both assertion and reason are true but reason is not the correct explanation of assertion.
3. The assertion is true but reason is false.
4. Both assertion and reason are false.

Q.

Identify A & B in given graph

1. J-curve under limited resources, S-curve under unlimited resources

2. J-curve under limited nutrient supply, S-curve under natural conditions

3. J-Curve under unlimited resources, S-curve under natural environment

4. J-curve under natural conditions, S-curve under limited resources