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Kas tas par dzīvnieku, kas ēd trīsreiz mūžā?
16, 2005, 18:11Dabaspētnieks
:-:

    Viendienīte ... brokastis, pusdienas un vakariņas ... =)
    16, 2005, 19:00Džekijs Nazis

    Nav taisnība. Pieaugušie īpatņi barību vispār neuzņem. Un dzīves ilgums pieaugušajiem arī ir kāds nu kurai sugai – no pāris stundām līdz kādām desmit dienām.

    Savukārt viendienīšu kāpuri ieturas kārtīgi. Galu galā – šiem taču jāaug un jāpārtop par lidoņiem.

    17, 2005, 8:24Nopietnais Zirneklītis

    Pareizā atbilde esot ērce. Tai ir divas nimfas stadijas. Lai varētu augt un attīstīties, mazajai nimfai jāpieķeras un jāpiesūcas, tad tā var izaugt un kļūt par otro nimfas stadiju. Pēdējai jāatkārto vēlreiz to pašu, tikai tad tā rezultātā kļūst par pieaugušu ērci. Tātad - trīsreiz mūžā ...
    Starp citu - jautājums no skolēnu bioloģijas olimpiādes ...
    Ja tā filozofiski vērtē, tad, protams, kāpura nodzīvoto laiku varētu pieskaitīt ērces mūžam. Bet labi, ka zinātniskā valodā vārdu 'mūžs' neattiecina uz dzīvniekiem.
    Morāle - olimpiādē jābūt uz visu gatavam!
    17, 2005, 13:56Zinātnieks
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