Organisms and Populations

Which of the following equations depicts Verhulst-Pearl logistic population growth ?

1. dNdt=rN ( K-NK )
2. dNdt=rN ( KK-N )
3. dNdt=rN ( K-NN )
4. dNdt=rN ( K+NK )

Which one of the following is an appropriate example of sexual deceit?

1. Sea anemone and clown fish
2. Ophrys and bumblebee
3. Female wasp and fig
4. Cuckoo and crow

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

1. A is not correct but R is correct
2. Both A and R are correct and R is the correct explanation of A
3. Both A and R are correct but R is not the correct explanation of A
4. A is correct but R is not correct

Consider a population of 10 million cells. Given the per-capita birth rate of 0.002 (per unit time) and the per-capita death rate of 0.002 (per unit time), the expected number of cells after 10 generations is .

1. 100 million
2. 1 million
3. 5 million
4. 10 million

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

1. A is not correct but R is correct
2. Both A and R are correct and R is the correct explanation of A
3. Both A and R are correct but R is not the correct explanation of A
4. A is correct but R is not correct

Match List-I with List-II.

1. A-III, B-I, C-II, D-IV
2. A-III, B-IV, C-II, D-I
3. A-I, B-II, C-III, D-IV
4. A-II, B-I, C-IV, D-III

Epiphytes that are growing on a mango branch are an example of which of the following?

1. Predation
2. Amensalism
3. Commensalism
4. Mutualism

Who is known as the father of Ecology in India?

1. Ram Udar
2. Birbal Sahni
3. S.R. Kashyap
4. Ramdeo Misra

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below:

1. Statement I is correct but statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both statement I and statement II are correct
4. Both statement I and statement II are incorrect

Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population?

1. dNdt = rN ( N-KN )
2. dNdt = N ( r-KK )
3. dNdt = r ( K-NK )
4. dNdt = rN ( K-NK )