Home
Class 12
BIOLOGY
read the following statement and choose ...

read the following statement and choose the correct. a.conifers are adopted to tolerate extreme environmental conditions because of thick cuticle. b. male gamets are Flagellated in polysiphonia. c. Sphangnum is related to peat formation. d. Filamentous algae multiply by fragmentation.

A

a,b and c b,c and d

B

b,c and d

C

only a and c

D

a, c and d

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Read the following statements and choose the correct ones. (a) In algae and fungi , both gametes are mostly non-motile . (b) In most of the organisms, Fertilization is external. (c) In most of higher organisms, female gamete is stationary.

Read the following statements (A to D) and select the one option that contains both correct statements. A. Z-line is present in the centre of the light band. B. Thin filaments are firmly attached to the M-line. C. The central part of thick filaments, not overlapped by thin filaments is called Z-band. D. Light band contains only thin filaments.

Read the following statements and find out the incorrect statements. a. In majority of organisms, male gamete is motile and female gamete is non-motile (stationary). b. In algae and fingi, both male and femla egaetes are non-motile. c. In seed plants, pollen grains are the carrier of male gaemtes and ovule has the egg. d. In dioecious plants, pollination facilitates trasnfer of pollen grains to the stigma. e. In monoecious animals, since male and female gametes are formed in different individuals, the organism must evolve special mechanism for gamete transfer.

The egg apparatus lies at chalazal end Read the following statements and select the correct set of statements. a. Sexual reproduction is a slow and complex , process. b. Apomixis always occurs without gamete formation. , C. Small sized organisms always have a shorter ife span. , d. Asexual mode of reproduction can occur through formation of specialised reproductive structures

Consider the following statements with respect to the flowering plants and choose the correct option (a) Pollen grains represent the male gametes (b) Functional megaspore develops innto embryo sac that represents the female gamete (c) Transfer of pollen grains from anther to stigma of different plant is known as xenogamy (d) Transfer of pollen grains from anther to stigma of another flower of the same plant is known as geitonogamy

AAKASH INSTITUTE-TEST 6-EXAMPLE
  1. the male gametophyte is not independent in

    Text Solution

    |

  2. protonema is a mosses and prothallus for ferns resembles with each oth...

    Text Solution

    |

  3. read the following statement and choose the correct. a.conifers are ad...

    Text Solution

    |

  4. all of the following differences between gymnosperms and angiosperms a...

    Text Solution

    |

  5. which one of the following pairs is wrongly matched?

    Text Solution

    |

  6. Chlamydomonas shows both isogamous as well as anisogamous type of repr...

    Text Solution

    |

  7. Anisogametes can differ in a. Structure, b. size, c. Behaviour or func...

    Text Solution

    |

  8. select the incorrect match

    Text Solution

    |

  9. which of the following is mismatched?

    Text Solution

    |

  10. select the incorrect statement w.r.t full contraction muscle fibre.

    Text Solution

    |

  11. Pathway travelled by an impulse in a reflex action is known as reflex ...

    Text Solution

    |

  12. read the following sentences carefully and select the incorrect statem...

    Text Solution

    |

  13. Motor speech area called Broca's area is suitable in with which lob...

    Text Solution

    |

  14. select the correct match

    Text Solution

    |

  15. which of the following are considered as chemoreceptors in humans?

    Text Solution

    |

  16. Underproduction of hormones by adrenal cortex alters carbohydrate meta...

    Text Solution

    |

  17. select the odd one wrt hormones of fight or flight

    Text Solution

    |

  18. glucagon is considered a hyperglycemic hormone because of all expect

    Text Solution

    |

  19. select in correct match wrt hormone of gastro intestinal tract

    Text Solution

    |

  20. Which of the following structure does not participate in hearing?

    Text Solution

    |