Third and Ten Part B Chapters 26-30

Transcription

1 Third and Ten Part hapters What a plant needs: arbon (O 2 ) Hydrogen (H 2 O) Oxygen (O 2, O 2 & H 2 0) Other nutrients are absorbed through the roots -- phosphorous, potassium, nitrogen, sulfur, calcium, magnesium etc... Macronutriens and micronutrients...determined by their relative concentration in the plant. RL PRTIL SIZ eneficial nutrients serve particular purposes in some plants. lay particles are (-) charged! Hard to keep the -ions like nitrates (NO3-) bsorbing minerals: plants exchange hydrogen to acquire potassium (K+). 1 Which of these molecules is not a nutrient for plants? water carbon dioxide mineral ions nitrogen gas None of these are nutrients.

2 2 Soils rich in which type of soil particle will have a high water-holding capacity? sand silt clay ll soil particles hold water equally well. 3 Which is a component of soil? 4 Humus mineral particles humus organisms air and water ll of these are correct. supplies nutrients to plants. is basic in its ph. is found in the deepest soil horizons. is inorganic in origin. 5 Xylem includes all of these except companion cells vessels tracheids dead tissue

3 Transpiration dhesion and ohesion Osmosis hesion -Tension Model SOUR SINK = ROOTS 1. Leaves produce sugar 2. Sugars actively transported into the phloem 3. Water follows by osmosis, pressure increases 6 What main force drives absorption of water, creates tension, and draws water through the plant? 7 The sugar produced by mature leaves moves into sieve tubes by way of, while water follows by. adhesion cohesion tension transpiration absorption osmosis, osmosis active transport, active transport osmosis, active transport active transport, osmosis 8 In plants, a growth response toward or away from a directional stimulus. TROPISM: Plant growth toward or away from a unidirectional stimulus

4 9 thylene 10 uxin 11 bscisic acid () Life cycle of flowering plants

5 12 evelops into the female ML MTOPHYT ML MTOPIPT POLR NULI flower megaspore gibberellin style senescence endosperm 13 ecomes food for developing embryo. 14 etween and ovary. flower megaspore gibberellin style senescence endosperm flower megaspore gibberellin style senescence endosperm 15 In the life cycle of a plant, the haploid generation that produces gametes. 16 In flowering plants, portion of the carpel where pollen grains adhere and germinate before fertilization can occur.

6 17 In seed plants, a small spore that develops into the sperm-producing male ; pollen grain. VLOPMNT O UIOT MRYO 18 Heart, torpedo, and globular refer to 19 ruits embryo development sperm development female development seed development oth b and d are correct nourish embryo development help with seed dispersal signal maturity attract pollinators signal when they are ripe 20 Plant tissue culture takes advantage of 21 In plants, meiosis directly produces a difference in flower structure sexual reproduction gravi photo totipotency new xylem phloem spores egg sperm

7 TISSU ORNIZTION ellular Level erm Layers diploblastic 2 layers: ectoderm endoderm triplobastic 3 layers: ectoderm mesoderm endoderm organ level asymmetrical OY PLNS OLOMT PSUOOLOMT OLOMT Sac Tube-within-a-tube OLOMTS (more on this next chapter!) NONSMNT coelomates Pseudocoelomates SMNTTION leads to specialization SMNT Most oelomates: annelids, arthropods, chordates Some oelomates: molluscs, echinoderms

8 OM JLLIS: tenophora NIRINS OTH bilateraly symmetrical three germ layers organ level latworms sac body plan ree-living: Planarian Parasitic: tapeworms and flukes Step up in evolution... Ribbon Worms complete digestive system proboscis: capture prey, burrowing locomotion ROUNWORM Pseudocoelom hydrostatic skeleton unsegmented everywhere ROTIRS Pseudocoelom unsegmented crown of cilia 22 Which of these is not a characteristic of animals? 23 The traditional phylogenetic tree of animals shows that heterotrophic diploid life cycle have contracting fibers single cells or colonial lack of chlorophyll three germ layers evolved before a coelom both molluscs and annelids are protostomes some animals have radial symmetry sponges were the first to evolve from an ancestral protist

9 May 07, Put these in order: proglottids, eyespots on head and collar cells. 1. planaria 2. tapeworm 3. sponge 25 Put these in order: crown of cilia, branched gastrovascular cavity, nerve net 1. Hydra 2. Rotifer 3. Planaria 26 Which of these does not pertain to a protostome? spiral cleavage blastopore is associated with the anus schizocoelom annelids, arthropods, and molluscs mouth is associated with first opening

10 May 07, radula is a unique organ for feeding found in molluscs annelids arthropods only insects ll of these are correct Most are marine, some freshwater and terrestrial 28 Which phylum is paired incorrectly with a terrestrial representative? molluscs--snail annelids--earthworm arthropods--grasshopper annelids--millipede ll of these are correct.

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