Предмет: Биология, автор: dazz13

Общие признаки с беспозвоночными животными

Ответы

Автор ответа: h100kg

Признаки сходства позвоночных с беспозвоночными.

1. Сходство ранних этапов эмбрионального развития — зигота, бластула, гаструла.

2. Развитие первичной, затем вторичной полости тела в процессе онтогенеза.

3. Развитие первичного, затем вторичного рта.

4. Метамерное разделение тела, проявляющееся в строении позвоночника, грудной клетки, межреберных мышц, спинномозговых нервов, межреберных лимфатических и кровеносных сосудов.

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