Home
Class 12
BIOLOGY
Productivity is the rate of production o...

Productivity is the rate of production of biomass expressed in terms of:
(i) `("kcal m"^(-3))yr^(-1)`
(ii) `g^(-2)yr^(-1)`
(iii) `g^(-1)yr^(-1)`
(iv) `("kcal m"^(-2))yr^(-1)`

A

(ii)

B

(iii)

C

(ii) and (iv)

D

(i) and (iii)

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • ECOSYSTEM

    OSWAAL PUBLICATION|Exercise TOPIC-3 : Ecological Succession and Nutrient Cycling (Long Answer Type Questions)|8 Videos

  • BIOTECHNOLOGY PRINCIPLES AND PROCESSES

    OSWAAL PUBLICATION|Exercise TOPIC -2 PROCESS OF RECOMBINANT DNA TECHNOLOGY (MULTIPLE CHOICE QUESTIONS )|19 Videos

  • ENVIRONMENTAL ISSUES

    OSWAAL PUBLICATION|Exercise TOPIC - 2 ( MULTIPLE CHOICE QUESTIONS.)|22 Videos

Similar Questions

Explore conceptually related problems

Find: (i) 64^(1/2) (ii) 32^(1/5) (iii) (125)^(1/3)

Simplify : (i) 2^(2/3)xx2^(1/5) (ii) (1/3^(3))^(7) (iii) 11^(1/2)/11^(1/4) (iv) 7^(1/2)*8^(1/2)

G = 6.67xx10^(-11) N m^(2)(kg)^(-2) = ………. (cm)^(3)s^(-2)g^(-1) .

Find the transpose of each of the following matrices: (i)[(5),((1)/(2)),(-1)] (ii) [(1,-1),(2,3)] (iii) [(-1,5,6),(sqrt(3),5,6),(2,3,-1)]

Write the following cubes in expanded form: (i) (2x+1)^3 (ii) (2a-3b)^3 (iii) (3/2x+1)^3 (iv) (x-2/3y)^3

Calculate the molality (m) of 3 M solution of NaCl whose density is 1.25 g mL^(-1) .

Express the rate of the following reaction in terms of the formation of ammonia : N_(2)(g)+3H_(2)(g) rarr 2NH_(3)(g)

Rationalise the denominators of the following : (i) (1)/(sqrt(7)) (ii) (1)/(sqrt(7)-sqrt(6)) (iii) (1)/(sqrt(5)+sqrt(2)) (iv) (1)/(sqrt(7)-2)

Write the nth term of the A.P. (1)/(m) , (1+m)/(m) , (1+2m)/(m) ,…

OSWAAL PUBLICATION-ECOSYSTEM-TOPIC-3 : Ecological Succession and Nutrient Cycling (Multiple Choice Questions)
  1. Decomposers like fungi and bacteria are: (i) Autotrophs (ii) Heter...

    Text Solution

    |

  2. The process of mineralisation by micro-organisms helps in the release ...

    Text Solution

    |

  3. Productivity is the rate of production of biomass expressed in terms o...

    Text Solution

    |

  4. An inverted pyramid of biomass can be found in which ecosystem?

    Text Solution

    |

  5. Which of the following is not a producer?

    Text Solution

    |

  6. Which of the following ecosystems is most productive in terms of net p...

    Text Solution

    |

  7. Pyramid of numbers is :

    Text Solution

    |

  8. Approximately how much of the solar energy that falls on the leaves of...

    Text Solution

    |

  9. Among the following, where do you think the process of decomposition w...

    Text Solution

    |

  10. How much of the net primary productivity of a terrestrial ecosystem is...

    Text Solution

    |

  11. During the process of ecological succession the changes that take plac...

    Text Solution

    |

  12. Climax community is in a state of:

    Text Solution

    |

  13. Among the following bio-geo-chemical cycles which one does not have lo...

    Text Solution

    |

  14. The sequence of communities of primary succession in water is:

    Text Solution

    |

  15. The reservoir for the gaseous type of bio-geo chemical cycle exists in...

    Text Solution

    |

  16. If the carbon atoms fixed by producers already have passed through thr...

    Text Solution

    |

  17. Which of the following type of ecosystem is expected in an area where ...

    Text Solution

    |

  18. The zone at the edge of a lake or ocean which is alternatively exposed...

    Text Solution

    |

  19. Edaphic factor refers to:

    Text Solution

    |

  20. Which of the following is an ecosystem service provided by a natural e...

    Text Solution

    |