海綿動(dòng)物門ppt課件(參考版)
2025-05-07 04:23本頁面
【正文】 海綿動(dòng)物－類群 沐浴海綿（ Euspongia） 尋常海綿綱角質(zhì)海綿亞綱，由海綿絲構(gòu)成網(wǎng)狀骨骼，沒有骨針，群體體積較大，多呈圓形，表面皮革狀，色暗 多孔動(dòng)物門 沐浴海綿 穿貝海綿 返回 地中海蜂海綿 返回 紅海綿 紫色管狀海綿 Aliysina cacunosa 紅火山海綿 Hemectyon sp. 瓶狀海綿 Callysponfia plicifdra 思 考 題 、結(jié)構(gòu)有何特點(diǎn)？根據(jù)什么說海綿動(dòng)物是最原始、最低等的多細(xì)胞動(dòng)物？ 區(qū)別是什么 ？ 3. 水溝系對(duì)海綿動(dòng)物的固著生活有何意義 ？ ：兩囊幼蟲 、 芽球 、 領(lǐng)細(xì)胞 ? 3 The Porifera have which of the following characteristics in mon? ? A) A cellular level of anization. ? B) Incipient（初始的） tissues with a low level of integration. ? C) A unique water current system powered by choanocytes（領(lǐng)細(xì)胞） . ? D) A body with incurrent openings (called ostia) for water intake. ? E) All of the above are correct. ? 5 The skeletal (supporting) structure of sponges may contain which of the following? ? A) Fibrillar collagen (a protein) （海綿絲） ? B) Calcareous spicules ? C) Siliceous spicules ? D) Modified collagen called spongin ? E) All of the above may be constituents of the sponge skeletal structure ? 8 Which of the following drives the passage of w
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