Plantae-Kinds of Plants

Plantae-Kinds of Plants - Which of the following is not...

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Unformatted text preview: Which of the following is not true about the Plant Kingdom? A) They have mitochondria B) They have linear chromosomes with protein. C) Their most immediate ancestors were blue green algae D) Some cells are flagellate E) All of the above are true 30% 27% 17% 13% 13% Who Are The Plants? Plants= eukaryotic, multicellular, photosynthetic Two great groups of multicellular plants 1) Multicellular algae 2) Land plants Multicellular Algae Red Algae (Division Rhodophyta) Ch a & d Reef building = Coraline algae secrete calcium carbonate Multicellular Algae Brown Algae Division Phaeophyta Ch a & c Kelp Multicellular Algae Green Algae Division Chlorophyta Ch a & b LICHENS ???? Lichens Where do they belong? Lichens are A) B) C) Species of green algae Species of bacteria A mutualistic association of unicellular algae and bacteria D) A mutualistic association of eukaryotic species E) None of the above 27% 20% 17% 27% 10% Clicker Question: Answer D) A mutualistic association of eukaryotic species: Algae (often green algae) + fungi Algae Symbiotic Algae cont'. Green Algae Zoochlorellae = mutualistic algae living in The tissues of animals e.g. in hydra Characteristics of Plants Characteristics used for classification: 1) Pigments (Photosynthetic and nonphotosynthetic) e.g. Chlorophylls a & b in land plants & green algae vs. Ch a & c in brown algae or Ch a & d or red algae Characteristics of Plants 2) Presence or absence of vascular tissue: Bryophytes (mosses, liverworts, hornworts) lack vascular tissue. Tracheophytes (ferns and seed plants) have vascular tissue Non-Vascular Plants Vascular Plants Green Algae Non-Vascular Plants Vascular Plants Bryophytes Tracheophytes Green Algae Overview of Plant Kingdom Land Plants Characteristics of Plants What is vascular tissue? Specialized cells that conduct fluids and nutrients from place to place in the organism Xylem = cells specialized to carry H20 & minerals Phloem = cells specialized to carry H2O & sugar Characteristics of Plants Xylem = cells specialized to carry H20 & minerals Phloem = cells specialized to carry H2O & sugar Characteristics of Plants Xylem = cells specialized to carry H20 & minerals Phloem = cells specialized to carry H2O & sugar Characteristics of Plants 3) Gametangia = gamete producing organs In algae they are unicellular. In land plants they are multicellular. Characteristics of Plants 3) Gametangia = gamete producing organs In land plants they are multicellular. Antheridium Sperm Archeogonium Eggs Multicellular Gametangia = Antheridia + Archegonia Land Plants Green Algae Single Celled Gametangia Characteristics of Plants 4) Embryos (multicellular structures in land plants living inside maternal tissue) "Embryophyta" Embryophyta Land Plants Green Algae Which tissue in a human is analogous to the archegonium? A) B) C) D) E) Pancreas Liver Ovary/Uterus Testes None of the above 27% 20% 23% 17% 13% Characteristics of Plants 5) Seeds = embryo + food source + seed coat Seed producing plants vs. non-seed plants Among vascular plants: Gymnosperms = "naked seeds" Angiosperms = seeds in flowers Bryophytes Tracheophytes Seed Plants Gymnosperms & Angiosperms Non-seed Plants Green Algae Characteristics of Plants 6) Life Cycles Alternation of Generations in Land Plants Clicker Question What are these structures? A) Moss sporophyte B) Haploid generation C) Hornworts D) Gametangia E) Antheridia What is not true about a sporophyte? (A) Produces gametes (B) Part of diploid generation (C) Meiosis occurs in some tissues (D) Grows from an embryo (E) All are true 37% 30% 20% 13% 0% Characteristics of Plants 6) Alternation of generations Characteristics of Plants 6) Alternation of generations In Bryophytes the haploid (n) generation is dominant In Tracheophytes the diploid (2n) generation is dominant Overview of Land Plants Bryophytes Tracheophytes Overview of Plant Kingdom Land Plants Origin of Land Plants? 1) 2) 3) 4) 5) Evidence that Green Algae are the ancestors DNA Ch a & b True starch Starch grains inside chloroplasts Whiplash flagella 6) Diverse life cycles & reproduction Asexual & sexual phases Origin of Land Plants? 7) Unicellular & multicellular species Origin of Land Plants? -cell specialization In large colonies -gamete specialization In large colonies Which Green Alga is the Closest to the Ancestor of Land Plants? Which Land Plant is Most Like the Ancestral Green Alga ? Green Algae Mosses Liverworts Hornworts Answer Liverworts Where did the tracheophyes come from? Whisk Ferns Horsetails Club Mosses What structures would you expect the early tracheophytes to have? 1) Leaves 2) Sporangia 3) Haploid generation dominant 4) Pollen 5) All of the above 6) None of the above 33% 20% 17% 13% 10% 7% 1 2 3 4 5 6 To which taxonomic category does this fruit belong? A) B) C) D) E) Gymnosperms Dicots Monocots Club Mosses None of the above ...
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