The structures that help some bacteria to attach to rocks and /or host tissues are HomeBiological Classification MCQsThe structures that help some bacteria to attach to rocks and /or host tissues are Biological Classification MCQs Share your love WhatsApp Facebook Telegram Twitter Pinterest Q. The structures that help some bacteria to attach to rocks and /or host tissues are: FimbriaeMesosomesHoldfastRhizoids Answer: Fimbriae