Home
Class 12
BIOLOGY
(A) 10 kcal//m^(2)//yr (B) 100 kcal...


(A) `10 kcal//m^(2)//yr`
(B) `100 kcal//m^(2)//yr`
(C ) `1,000 kcal//m^(2)//yr`
(D) `1,00,000 kcal//m^(2)//yr`
In the above energy pyramid for an ecosystem, the rate of secondary production is

A

same

B

more

C

less

D

can not be ascertained from the data

Text Solution

Verified by Experts

The correct Answer is:
A

Ecological efficiency is the percentage of energy converted into biomass by a higher trophic level over the energy of food resources available at the lower trophic level. In both cases mentioned in the question, it will be 1/10.
Promotional Banner

Topper's Solved these Questions

  • Ecology

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|75 Videos
  • ENVIRONMENTAL ISSUES

    TRUEMAN BIOLOGY|Exercise CHECK YOUR CONCEPT (Environmental Issues/Pollution)|10 Videos

Similar Questions

Explore conceptually related problems

2m , m + 10 and 3m +2 form the terms of an AP, then the value of m is:

If l^(2) + m^(2) =1 , then the maximum value of l+m is

Given : C_(2)H_(6)(g) rarr 2C(g) + 6H(g) : Delta H = 712 kcal The C - C bond energy is 112 kcal, what is the C - H bond energy ?

The SI unit of energy is J=kg m^(2)s^(-2) , that of speed v is ms^(-1) and of acceleration a is ms^(-2) . What of the formulae for kinetic energy (k) given below can you rule out on the basis of dimensional arguments (m stands for the mass of the body) : (a) K = m^(2)v^(2) (b) K = (1/2)mv^(2) ("c") K= ma (d) K = (3/16)mv^(2) (e) K=(1/2)mv^(2)+ma

Two particle of masses m_1 and m_2 have equal kinetic energies . The ratio of their momenta is

Which of the following is expected to have the highest value (gm//m^(2)//yr) in a grassland ecosystem?

S + (3)/(2)O_(2) rarr SO_(3) + 2x kcal SO_(2) + (1)/(2) O_(2) rarr SO_(3) + y kcal Find out the heat of formation of SO_(2) :

Two moving coil meters M_1 and M_2 have the following particulars : R_1 = 10 Omega , N_1 = 30 A_1 = 3.6 xx 10^(-3) m^2 , B_1 = 0.25 T R_2 = 14Omega , N_2 = 42 A_2 = 1.8 xx 10^(-3) m^2 , B_2 = 0.50 T (The spring constants are identical for the two meters). Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M_2 and M_1 .

If cosec A + cot A =m , show that (m^(2) -1)/(m^(2)+1) = cos A .

TRUEMAN BIOLOGY-ECOSYSTEM -MCQ
  1. Match list-I with list-II and select the correct answer using the code...

    Text Solution

    |

  2. (A) 10 kcal//m^(2)//yr (B) 100 kcal//m^(2)//yr (C ) 1,000 kca...

    Text Solution

    |

  3. (A) 10 kcal//m^(2)//yr (B) 100 kcal//m^(2)//yr (C ) 1,000 kca...

    Text Solution

    |

  4. The stratification pattern in a community is well illustrated by a

    Text Solution

    |

  5. In the absence of decomposers, ecosystem functioning is adversely affe...

    Text Solution

    |

  6. The tendency towards increased variety and density of species at commu...

    Text Solution

    |

  7. Climax communities

    Text Solution

    |

  8. Both algae and fungi are not independently capable of initiating seral...

    Text Solution

    |

  9. Math List-I with List-II and select the correct answer using the codes...

    Text Solution

    |

  10. Agroecosystem is unstable because of

    Text Solution

    |

  11. Primary consumers in detritus food chain are

    Text Solution

    |

  12. Putrefying organisms are

    Text Solution

    |

  13. A pea-cock eats snakes which eat frogs. These eat hoppers which in tur...

    Text Solution

    |

  14. Which of the food chain directly depends on solar radiations?

    Text Solution

    |

  15. Converters or transducer organisms in the food chain are called

    Text Solution

    |

  16. In parasitic food chain, the pyramid of number is

    Text Solution

    |

  17. Ascending trophic level in grazing food chain pyramid represents

    Text Solution

    |

  18. Phytoplankton are dominant in

    Text Solution

    |

  19. Which ones are reservoirs of Phosphorus and Nitrogen cycles respective...

    Text Solution

    |

  20. An organism contains carbon molecules which have passed through three ...

    Text Solution

    |