Q. No.
Bacteria, fungi, lower plants survive in adverse conditions by:
(1) diapause
(2) suspended growth
(3) migration
(4) formation of thick-walled spores
What are labelled phases A, B and C in given
sigmoidal growth curve?
A B C
(1) Stationary Log Lag
(2) Lag Stationary Log
(3) Log Lag Stationary
(4) Lag Log Stationary
Monarch butterfly escapes from predators by
(1) foul smell
(2) bitter taste
(3) colour combination
(4) rough skin
Which is correctly labelled with respect to the given diagram?
(1) B: Logistic curve
(2) C: Carrying capacity
(3) C: Exponential curve
(4) A: Carrying capacity
Which of the following associations shows mutualism?
(1) Fig and wasp
(2) Barnacles on whale
(3) Roundworms in human intestine
(4) Orchids on mango tree
Match column I with column II and select the correct option from the codes given below.
| Column I | Column II |
| A. Commensalism | (i) One inhibited other unaffected |
| B. Parasitism | (ii) One benefited other unaffected |
| C. Mutualism | (iii) Both are benefitted |
| D. Amensalism | (iv) One benefitted other harmed |
| A | B | C | D | |
| 1. | (iv) | (ii) | (iii) | (i) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (ii) | (iv) | (iii) | (i) |
| 4. | (ii) | (iv) | (i) | (iii) |
The process where a population inhibits the growth of other population without affecting itself is known as
(1) Amensalism
(2) Parasitism
(3) Mutualism
(4) Commensalism
Which of the following is not a factor that would limit the growth of a population?
(1) Food shortage
(2) Immigration
(3) Disease
(4) Famine
The graph shows two types of population growth curve. A is exponential and B is logistic.
Which one of the following growth model considered as more realistic one?
1. Exponential growth curve
2. Logistic growth curve
3. Both the growth curves
4. None of the above
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