Home
Class 12
BIOLOGY
When does the growth rate of a populatio...

When does the growth rate of a population following the logistic model equal zero ? The logistic model is given as dN/dt = rN(1-N/K):

A

When N nears the carrying capacity of the habitat.

B

When N/K equals zero.

C

When death rate is greater than birth rate.

D

When N/K is exactly one

Text Solution

Verified by Experts

The correct Answer is:
D
r-selected species are those that have a high growth rate , large number of offspring , small body size , early maturity , short generation time and ability to disperse offspring widely.
Promotional Banner

Topper's Solved these Questions

  • NEURAL CONTROL AND COORDINATION

    TRUEMAN BIOLOGY|Exercise MCQ|250 Videos

  • PLANT GROWTH AND DEVELOPMENT AND PLANT MOVEMENTS

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|161 Videos

Similar Questions

Explore conceptually related problems

Logistic growth model is more realistic than exponential growth model. Why?

Rate = k[NO]^(2) [O_(2)]^(1) . By how many times does the rate of reaction change when the volume of the reaction vessel is reduced to 1//3^(rd) of its original volume ? Will ther he any change in the order of the reaction.

Comprehension The first demonstration of the stereochemistry of the S_(N^2) reaction was carried out in 1934 by Prof. E.D Hughes and his colleagues at the University of London. They allowed (R) -2- iodooctane to react with radioactive iodide ion (""^(**)I-) The rate of substitution (rate constant K_5 ) was determined by measuring the rate of incorporation of radioactivity into the alkyl halide. The rate of loss of optical acitivity from the alkyl halide (rate constant K_0 ) was also determined under the same conditions: What ratio K_0//K_s is predicted for each of the following stereochemical scenarios : For equal amounts of both retention and inversion ?

Draw and explain a logistic curve for a population of density (N) at time (t) whose 'intrinsic rate of natural increase is (r) and carrying capacity is (k).

TRUEMAN BIOLOGY-ORGANISMS AND POPULASTIONS -Multiple Choice Questions
  1. Adapative measure to protect against extreme heat by poikilotherms is

    Text Solution

    |

  2. A sedentary sea anemone gets attached to the shell lining of hermit cr...

    Text Solution

    |

  3. A biologist studied the population of rats in a barn. He found that th...

    Text Solution

    |

  4. Just as a person moving from Delhi to Shimla to escape the heat for th...

    Text Solution

    |

  5. A location with luxuriant growth of lichens on the trees indicates tha...

    Text Solution

    |

  6. The following graph depicts changes in two populations (A and B) of he...

    Text Solution

    |

  7. An association of individuals of different species living in the same ...

    Text Solution

    |

  8. Most animals that live in deep oceanic waters are:

    Text Solution

    |

  9. In which of the following interaction both partners are adversely affe...

    Text Solution

    |

  10. Gause's principle of competitive exclusion states that:

    Text Solution

    |

  11. When does the growth rate of a population following the logistic model...

    Text Solution

    |

  12. Which of the following is correct for r-selected species ?

    Text Solution

    |

  13. If '+' sign is assigned to benefited interaction '-' sign to detriment...

    Text Solution

    |

  14. The principle of competitive exclusion was stated by

    Text Solution

    |

  15. Asymptote in a logistic growth curve is obtained, when

    Text Solution

    |

  16. Plants, which produce characteristic pneumatophores and show vivpary...

    Text Solution

    |

  17. Which one fo the following population interactions is widely used in m...

    Text Solution

    |

  18. In a growing population of a country ,

    Text Solution

    |

  19. Which one of the following plants shows a very close relationship with...

    Text Solution

    |

  20. Natality refers to

    Text Solution

    |