Большинство водных и наземных олигохет — «мусорщики», питающиеся мертвой органикой, в первую очередь растительного происхождения. Дождевые черви питаются разлагающейся органикой поверхностного слоя почвы и могут затаскивать опавшие листья в норки. Будучи детритофагами, они поглощают органический материал вместе с заглатываемым грунтом. Мелкодисперсный детрит, водоросли и микроорганизмы — важные источники пищи для некрупных пресноводных форм. Часто встречающиеся маленькие олигохеты Aeolosoma собирают детрит с простомиума. В процессе питания червь прижимает вентральную, покрытую ресничками поверхность
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Поделитесь своими знаниями, ответьте на вопрос:
Сделайте вывод об особенности строения гриба мукора и дрожжей ( )
Строение:
Мукоры - плесневые грибы. Мицелий мукора не имеет перегородок. Под микроскопом хорошо заметно, что грибница мукора состоит из тонких бесцветных нитей. Это всего одна сильно разросшаяся клетка с множеством ядер в цитоплазме.
Размножение:
Размножается мукор спорами. Некоторые нити грибницы поднимаются вверх и расширяются на концах. В этих расширениях, имеющих вид округлых черных головок, образуются споры. После созревания спор головки вскрываются. Споры разносится. При благоприятных условиях они прорастают в грибницу.
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