Home
Class 11
BIOLOGY
The spread of living pteridophytes is li...

The spread of living pteridophytes is limited and is restricted to narrow geographical region because

Text Solution

Verified by Experts

The correct Answer is:
because they need water for fertilization
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Biodiversity of a geographical region represents

Biodiversity of a geographical region represents

Biodiversity of a geographical region represents

Notochord is restricted to the tail region in

Organisms restricted to narrow range of temperature are

The organisms which are restricted to a narrow range of salinity are known as

An electron is not deflected an through a certain region because

The different forms of interbreeding species that live in different geographical regions are called

The population limited to a particular geographic area is called as

What are the major causes of species losses in a geographical region ?

ALLEN-DIVERSITY OF THE LIVING WORLD-Exercise
  1. Read the following informations and identify the genus * Coralloids ...

    Text Solution

    |

  2. Match the column I with Column II:-

    Text Solution

    |

  3. The spread of living pteridophytes is limited and is restricted to nar...

    Text Solution

    |

  4. Female cone to Mega sporophylls to Megasporongia to Megaspores For a...

    Text Solution

    |

  5. Identify the name of processes (A&B) in the given sequence Microspor...

    Text Solution

    |

  6. In gymnosperms, the male and the female gametophytes do not have an in...

    Text Solution

    |

  7. In gymnosperms, the nucellus is protected by envelops and the composit...

    Text Solution

    |

  8. How many cells are there in an embryo sac?

    Text Solution

    |

  9. Write the names of male and female sex organs of angiosperms respectiv...

    Text Solution

    |

  10. In how many classes angiosperms are divided?

    Text Solution

    |

  11. Ovules, stamen, ovary, carpel, anther, antipodals, synergids, Pollen g...

    Text Solution

    |

  12. Angiosperms range in size from tiny, almost microspic e.g. (A) to tall...

    Text Solution

    |

  13. Total number of nuclei involved in double fertilization is

    Text Solution

    |

  14. Write down the ploidy level of followings regarding typical angiosperm...

    Text Solution

    |

  15. After fertilization, what is the future of the following:- (A) Ovule...

    Text Solution

    |

  16. Identify the A,B,C, D & E in given life cycle of an angiosperm:-

    Text Solution

    |

  17. Many algae such as volvox, spirogyara and some species of Chlamydomona...

    Text Solution

    |

  18. Which kind of life cycle pattern is shown by all seed-bearing plants?

    Text Solution

    |

  19. The life cycle of any sexually reproducting plant, there is an alterna...

    Text Solution

    |

  20. Which processes are essential for alternation of generation in plant l...

    Text Solution

    |