1. New SDN Article! 10 Last-Minute Gift Ideas for Medical Students
    Dismiss Notice
  2. This forum is for support and discussion only. Please promote test prep materials/services (including AMAs) in the Special Offers subforum only. Thanks!
    Dismiss Notice
  3. Guest, be sure to check out How To Get Into Dental School, our free downloadable PDF with step-by-step details for dental school applicants!
    Dismiss Notice
Article: Gift Ideas Test Prep Services Free Dental Admissions Guide

Top Score Question

Discussion in 'DAT Discussions' started by arpitpatel86, May 16, 2008.

Previous Thread Next Thread
Loading...
  1. arpitpatel86

    arpitpatel86
    2+ Year Member

    Joined:
    May 9, 2008
    Messages:
    104
    Likes Received:
    0
    Status:
    Pre-Dental
    All of the following are true about sexual reproduction in plants EXCEPT:

    a. all plants exhibit alternation of generations

    b. the diploid sporophy generation produces haploid spores

    c. the haploid spores develop into diploid gametophyte generation

    d. spores are cells that prevent the loss of water

    e. meristems provide source of cells that can develop into an adult

    the answer was C i do agree with this answer however A doesnt seem right either bc angiosperms dont develop through alternation of generations do they?
     
    #1 arpitpatel86, May 16, 2008
  2. Zerconia2921

    Zerconia2921 Bring your A-game!
    2+ Year Member

    Joined:
    Mar 24, 2008
    Messages:
    207
    Likes Received:
    0
    Status:
    Pre-Pharmacy

    Angiosperms (flowering plants) are sporophyte dominate as well ferns. Which means they start off with 2n sprophyte generation produce haploid spores (N) which later become gametes to be fertilized.

    C is correct (its false) because once you produce sproes (1N) you can't return to 2N if your a gametophyte.
    A- all plants alternate in generation. right
    B- 2n sprophyte do make 1n spores right
    D- spores conserve water
    E-meristem are capable to develop into any type of cell.
     
    #2 Zerconia2921, May 16, 2008
  3. Hugh Mannity

    Hugh Mannity
    2+ Year Member

    Joined:
    May 15, 2008
    Messages:
    228
    Likes Received:
    0
    Status:
    Pre-Dental
    They do but it is highly reduced. The idea is that in the evolutionary process, the sporophyte generation becomes more dominant. Basically as you go from less advanced plants to angios, the gametophyte continually decreases relative to the sporophyte.
     
    #3 Hugh Mannity, May 16, 2008
Previous Thread Next Thread
Loading...
(You must log in or sign up to post here.)

Share This Page