3 Lks Gymnos [PDF]

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Lembar Kegiatan Siswa 3 KINGDOM PLANTAE Divisi Spermatophyta (Gymnospermae) Tujuan : Untuk mengetahui Karakteristik Tumbuhan Berbiji Terbuka, Klasifikasinya, Siklus Hidup Serta Peranannya dalam kehidupan Sumber : Buku Biologi Kelas X, Bahan Realia, Sumber Internet 1. Identifikasilah karakteristik /ciri-ciri umum Spermatophyta/tumbuhan Berbiji berikut! a. Tumbuhan Cormophyta/Kormus ....................................................................... b. Tumbuhan Tracheophyta ................................................................................... c. Tumbuhan Anthophyta Siphonogama ............................................................... d. Akar ................................................................................................................... e. Alat perkembangbiakan berupa ................................... dan .............................. f. Biji mengandung ................................................................................................ g. Generasi sporofit berupa .................................................................................... h. Generasi gametofit berupa ................................................................................. 2. Berdasarkan letak bakal biji, tumbuhan berbiji terbagi atas tumbuhan berbiji terbuka (Gymnospermae) dan tumbuhan berbiji tertutup (Angiospermae). Carilah ciri-ciri tumbuhan berbiji terbuka (Gymnospermae) berikut. a. Bakal biji terbuka karena ....................................................................................................... b. Alat reproduksi berupa .......................................................................................................... c. Jenis pembuahan ................................................................................................................... d. Gymnospermae berumah satu/monoesis/monoseus .............................................................. e. Gymnospermae berumah dua/diesis/diseus ........................................................................... 3. Divisi Gymnospermae dalam sistem klasifikasinya dibagi 4 kelas yaitu: Kelas Cycadinae, Coniferae, Gnetinae dan Ginkgoinae a) Kelas Cycadinae - Akar ....................................................................................................................................... - Batang ................................................................................................................................... - Daun ....................................................................................................................................... - Cycadinae berumah ................................................................................................................ - 3 contoh Cycadinae ................................................................................................................



Cycas Betina



Cycas Jantan



b) Kelas Coniferae - Akar ....................................................................................................................................... - Batang .................................................................................................................................... - Daun ....................................................................................................................................... - Coniferae berumah ................................................................................................................. - 3 contoh Coniferae .................................................................................................................



c) Kelas Gnetinae



- Akar ....................................................................................................................................... - Batang .................................................................................................................................... - Daun ....................................................................................................................................... - Gnetinae berumah .................................................................................................................. - 3 contoh Gnetinae ..................................................................................................................



Strobilus Betina



Strobilus Jantan



d) Kelas Ginkgoinae -Akar ....................................................................................................................................... -Batang ................................................................................................................................... -Daun ....................................................................................................................................... - Ginkgoinae berumah ............................................................................................................. -3 contoh Ginkgoinae ..............................................................................................................



Biji Ginkgo



4. Carilah informasi peranan Gymnospermae dalam kehidupan manusia yang menguntungkan dan merugikan berserta nama spesiesnya! (Min.5)