Предмет: Биология, автор: vlad768256

Дам 50 балов. Яким чином відбуваеться утворення річних кілець у рослин?

Ответы

Автор ответа: korolivnaanna

1

Поява річних кілець зумовлена сезонною активністю камбію. Навесні клітини камбію активно поділяються й утворюють клітини великих розмірів із тонкими стінками, зокрема судини великого діаметра. На поперечному зрізі вони мають вигляд світлої частини річного кільця.

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