Home
Class 12
BIOLOGY
'All the pyramids, of number, of energy ...

'All the pyramids, of number, of energy and biomass are upright''.
(i) Grass land (ii) A big tree
(iii) A sugarcane field (iv) The Arabian Sea
Find the option which correctly tells the ecosystem (s) for which the above statement doesn't hold true.

A

(ii), (iii) and (iv)

B

(i) & (ii)

C

(ii) and (iv)

D

(iii) & (iv)

Text Solution

Verified by Experts

The correct Answer is:
C
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

Consider the following statements concerning food chains (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation (ii) Removal of most of the carnivores resulted in an increased population of deers (iii) The length of food chains is generally limited to 3 - 4 trophic levels due to energy loss (iv) The length of food chains may vary from 2 to 8 trophic levels Which two of the above statements are correct?

Consider the following four statements (i-iv) and select the option that correctly identifies the true (T) and false (F) ones. (i). Atrial natriuretic factor can cause vasodilation (dilation of blood vessels) and thereby decreases the blood pressure. (ii). On an average, 60-70 gm of urea is excreted out per day. (iii). Sebaceous glands eliminate certain substances like NaCl, urea and lactic acid through sebum. (iv). PCT is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.

Go through the following Statements (i) A trophic level represents one species (ii) Pyramid of energy can never be inverted (iii) Ecological pyramids hold true only for simply food chains (iv) Saprophytes are included in the lower most bar in an energy pyramid Choose the best options regarding them

Go through the following statements : (i) Lysosomes contain hydrolytic enzymes which are optimally active at the alkaline pH. (ii) A number of proteins synthesised by ribosomes on the endoplasmic reticulum are modified in the cisternae of the Golgi apparatus before they are released from its cis face. (iii) Typically a mitochondrion has a diameter of 0.2-1.0 mu m and length of 1.0 - 4.1 mu m (iv) Elaioplasts store oils and fats. Find out the correct statements

Which of the following statement (s) about taxonomic aids is/are true I. Keys are used to identify plants and animals based on similarities and disimilarities. II. Flora contains the account of habitat and distribution of plants in a given area. III. Flora provides an index to the plant species found in a particular area. IV. Monographs provide information for identification of species found in an area

An urn contains 25 balls of which 10 balls bear a mark 'X' and the remaining 15 bear a mark 'Y'. A ball is drawn at random from the urn, its mark is noted down and it is replaced. If 6 balls are drawn in this way, find the probability that (i) all will bear 'X' mark. (ii) not more than 2 will bear 'Y' mark. (iii) at least one ball will bear 'Y' mark.  (iv) the number of balls with 'X' mark and 'Y' mark will be equal.

A is the set of prime number less than 10, B is the set of odd numbers less than 10 and C is the set of even numbers of less than 10. Which of the following statements are true? (i) A subset B (ii) B subset A (iii) A subset C (iv) C subset A (v) B subset C (vi) phi subset A

List the elements the following sets. (i) G={all the factors of 20} (ii) F={multiples of 4 between 17 and 61 which are divisible by 7? (iii) S={x : x is a letter in the word 'MADAM'"} (iv) P={x : x is a whole number between 3.5 and 6.7}

State which of the following statement are true and which ones are false . Justify your answer . (i) 21 in {x|x has exactly four positive factors } (ii) 64 in {y| the sun of the all the positve factors of y is 2y } (iii) 2 in { x |x^4- 3x^3+4x^2-5x+6=0} (iv) 23562 in {y|y is divisible by 9}

For 3xx3 matrices M \ a n d \ N , which of the following statement (s) is (are) NOT correct ? Statement - I : N^T M N is symmetric or skew-symmetric, according as M is symmetric or skew-symmetric. Statement - II : M N-N M is skew-symmetric for all symmetric matrices Ma n dN . Statement - III : M N is symmetric for all symmetric matrices M a n dN . Statement - IV : (a d jM)(a d jN)=a d j(M N) for all invertible matrices Ma n dN .

TRUEMAN BIOLOGY-ECOSYSTEM -MCQ
  1. About 70% of total global carbon is found in

    Text Solution

    |

  2. Consider the following statements concerning food chains (i) Remov...

    Text Solution

    |

  3. 'All the pyramids, of number, of energy and biomass are upright''. ...

    Text Solution

    |

  4. All the following are limitations of ecological pyramids, except

    Text Solution

    |

  5. Find the correct statement

    Text Solution

    |

  6. Consider the following statements In an ecosystem energy (i) Move...

    Text Solution

    |

  7. Match list-I with list-II and select the correct answer using the code...

    Text Solution

    |

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

    Text Solution

    |

  9. Refer to the above diagram of energy pyramid. The ecological efficienc...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  13. Climax communities

    Text Solution

    |

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

    Text Solution

    |

  15. Match List-I with List-II and select the correct answer using the code...

    Text Solution

    |

  16. Agroecosystem is unstable because of

    Text Solution

    |

  17. Primary consumers in detritus food chain are

    Text Solution

    |

  18. Putrefying organisms are

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |