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.

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

In an area, a population with large size individuals having long life span, more parental care and slow development was present. The type of population growth curve will be:

(1) S-shaped                     

(2) J-shaped

(3) Z-shaped                     

(4) All of these

The plants which can withstand with narrow and broad range of temperature tolerance respectively are:

1. monothermal and stenothermal

2. stenothermal and monothermal

3. stenothermal and eurythermal

4. stenothermal and mesothermal