Home
Class 12
BIOLOGY
Nuisance growth of aquatic plants and bl...

Nuisance growth of aquatic plants and bloom forming algae in natural waters is generally due to high concentrations of :  
(A) carbon
(B) sulphur
(C) calcium
(D) phosphorus

A

carbon

B

sulphur

C

calcium

D

phosphorus

Text Solution

Verified by Experts

The correct Answer is:
D

Nuisance growth of aquatic plants and bloom. forming algae in natural waters is generally due to high concentrations of phosphorus.
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL ISSUES

    KUMAR PRAKASHAN|Exercise Section - E (Solution of NCERT Exemplar)(Very Short Answer Type Questions (VSQs))|15 Videos
  • ENVIRONMENTAL ISSUES

    KUMAR PRAKASHAN|Exercise Section - E (Solution of NCERT Exemplar)(Short Answer Type Questions )|11 Videos
  • ENVIRONMENTAL ISSUES

    KUMAR PRAKASHAN|Exercise Section - D(Textual Exercise)|11 Videos
  • ECOSYSTEM

    KUMAR PRAKASHAN|Exercise SECTION - F (MCQs ASKED IN COMPETTIVE EXAM)|84 Videos
  • EVOLUTION

    KUMAR PRAKASHAN|Exercise SECTION - F (Multiple Choice Questions)|198 Videos

Similar Questions

Explore conceptually related problems

Study the following statement and choose the option: (I) Tapetum nourishes the developing pollen grains (II) Hilum represents the junctions between ovule and funicle (III) In aquatic plant such as water hyacinth and water lily, pollination by water (IV) The primary endosperm nucleus is triploid (A) I and II are correct but III and IV are incorrect (B) I, II and IV are correct but III is incorrect (C) II, III and IV are correct but I is incorrect (D) I and IV are correct but II and III are incorrect

Members of Phycomycetes are found in : (i) Aquatic habitats (ii) On decaying wood (iii) Moist and damp places (iv) As obligate parasites on plants. Choose form the following options. (A) (i) and (iv) (B) (ii) and (iii) (C) All of these (D) None of these

Medicines are either man made (i.e., synthetic) or obtained from living organisms like plants, bacteria, animals, etc. and hence, the latter are called natural products. Sometimes, natural products are chemically altered by man to reduce toxicity or side effects. Write against each of the following whether they were initially obtained as a natural product or as a synthetic chemical. (a) Penicillin (b) Sulphonamide (c) Vitamin-C (d) Growth hormone

............ associated with filament of molds present in the water and form flocks. (A) Aerobic bacteria (B) Anaerobic bacteria (C) Both (A) and (B) (D) Algae

KUMAR PRAKASHAN-ENVIRONMENTAL ISSUES-Section - E (Solution of NCERT Exemplar)(Multiple Choice Questions (MCQs))
  1. The material generally used for sound proofing of rooms like a recordi...

    Text Solution

    |

  2. Compressed Natural Gas (CNG) is  (A) propane (B) Methane (C) etha...

    Text Solution

    |

  3. World's most problematic aquatic weed is  (A) Azolla (B) Wolffia ...

    Text Solution

    |

  4. Which of the following exhibits biomagnification ?  (A) SO(2) (B) M...

    Text Solution

    |

  5. The expanded form of DDT is :  (A) dichloro diphenyl trichloroethane ...

    Text Solution

    |

  6. Which of the following material takes the longest time for biodegradat...

    Text Solution

    |

  7. Choose  the incorrect statement (A) The Montreal protocol is associat...

    Text Solution

    |

  8. Among the following which one causes maximum indoor chemical pollution...

    Text Solution

    |

  9. The green scum seen in the fresh water bodies is :  (A) blue-green al...

    Text Solution

    |

  10. The loudness of a sound that a person can withstand without discomfort...

    Text Solution

    |

  11. The major source of noise pollution worldwide is due to :   (A) offic...

    Text Solution

    |

  12. The correct matches is,   (A) A-iii, B-iv, C-i, D-ii (B) A-i, B...

    Text Solution

    |

  13. Catalytic converters are fitted into automobiles to reduce emission of...

    Text Solution

    |

  14. Why is it necessary to remove sulphur from petroleum products ?   (A)...

    Text Solution

    |

  15. Which one of the following impurities is easiest to remove from waste ...

    Text Solution

    |

  16. Which one of the following diseases is not caused due to contamination...

    Text Solution

    |

  17. Nuisance growth of aquatic plants and bloom forming algae in natural w...

    Text Solution

    |

  18. Algal blooms impart a distinct colour to water due to :   (A) their p...

    Text Solution

    |

  19. Match the items in column I and column II and choose the correct optio...

    Text Solution

    |

  20. In the textbook you came across "Three Mile Island and Chernobyl disas...

    Text Solution

    |