Key To Major Groups Of Organisms Exclusive Of Kingdom Animalia

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Unicellular, prokaryotic organisms with cell walls

2. Cell walls with muramic acid Kingdom Bacteria

2. Cell walls without muramic acid Kingdom Archaea

Unicellular, colonial, filamentous, or multicellular eukaryotic organisms, with or without cell walls 3. Organisms whose female (and usually male) reproductive structures consist of a single cell or with sterile cells surrounding the one-celled reproductive structures; zygotes not developing into embryos

4. Organisms unicellular, filamentous, or plasmodial (i.e., with naked protoplasm)

5. Cell walls without chitin Kingdom Protista

6. Cells with plastids

7. Plastids with yellow, brown, or orange pigments more conspicuous than the chlorophyll pigments

Plant Names and Classification 295

8. Food reserves oils or carbohydrates other than starch; two flagella both located at one end of the cell

9. Ahaptonema (third flagellum) usually present Phylum Prymnesiophyta

9. Ahaptonema absent

10. The unequal flagella bearing stiff lateral hairs Phylum Cryptophyta

10. Flagella not as above Phylum Chromophyta (in part)

8. Food reserve starch; cells with a flagellum at one end and another at right angles to it in a central groove Phylum Dinophyta

7. Plastids with chlorophyll pigments more conspicuous than other pigments

11. Cells flexible; carbohydrate food reserve paramylon Phylum Euglenophyta4

11. Cells not flexible; carbohydrate food reserve starch Phylum Chlorophyta (in part)

6. Plastids absent; vegetative bodies of organisms consisting of filaments with walls containing cellulose, multinucleate masses of protoplasm, or amoeba-like cells

12. Cell walls with cellulose; organisms aquatic Phylum Oomycota

12. Cell walls without cellulose; organisms not aquatic

13. Vegetative bodies consisting of multinucleate masses of protoplasm (plasmodia) Phylum Myxomycota

13. Vegetative bodies amoeba-like Phylum Dictyoliosteliomycota

5. Cell walls containing chitin Kingdom Fungi

14. Vegetative bodies consisting primarily of a single cell, often with rhizoids; zoospores produced Phylum Chytridiomycota

14. Vegetative bodies consisting primarily of branched filaments; no flagellated cells produced

15. Filaments of the vegetative bodies containing numerous nuclei;

not partitioned into individual cells Phylum Zygomycota

15. Filaments of the vegetative bodies partitioned into individual cells, each with one to several nuclei

16. Sexual reproductive cells produced within sacs Phylum Ascomycota

16. Sexual reproductive cells produced externally on club-shaped structures Phylum Basidiomycota

4. Organisms multicellular, not filamentous or plasmodial

17. Organisms with accessory pigments essentially similar to those of higher plants; carbohydrate food reserve starch 18. Organisms with complex bodies differentiated into nodes and internodes Phylum Charophyta

18. Organisms with bodies not differentiated into nodes and internodes Phylum Chlorophyta (in part)

17. Organisms with some accessory pigments differing from those of higher plants; food reserves carbohydrates other than ordinary starch

19. Organisms brownish in color due to presence of brown pigments; carbohydrate food reserve laminarin Phylum Chromophyta (in part)

19. Organisms reddish in color due to presence of red pigments; carbohydrate food reserve floridean starch Phylum Rhodophyta

3. Organisms with multicellular reproductive structures Kingdom Plantae

20. Plants without true xylem or phloem . .Phylum Bryophyta 20. Plants with true xylem and phloem

21. Plants with true leaves absent; enations5 present; stems branching dichotomously Phylum Psilotophyta

4. Only about a third of euglenoid species develop chloroplasts

5. See page 398 for a discussion of enations

Chapter 16

Key to Major Groups of Organisms (continued)

21. Plants with true leaves present; enations absent; stems branching in various ways or unbranched 22. Plants with leaves having a single vein (microphylls) 23. Stems not ribbed and not containing silica;

leaves photosynthetic Phylum Lycophyta

23. Stems ribbed and containing silica; leaves reduced to scales and non-photosynthetic Phylum Equisetophyta

21. Plants with leaves usually having more than one vein (megaphylls)

24. Plants reproducing by means of spores produced on the leaves . . . . Phylum Polypodiophyta 24. Plants reproducing by means of seeds developed from ovules 25. Plants without flowers; seeds not produced in enclosed ovaries 26. Leaves pinnate and large, resembling those of palms Phylum Cycadophyta

26. Leaves not pinnate or palmlike 27. Leaves fan-shaped, with numerous dichotomously forking veins . . . .Phylum Ginkgophyta 27. Leaves not fan-shaped 28. Wood containing no vessels Phylum Pinophyta

28. Wood containing vessels

Phylum Gnetophyta

24. Plants with flowers; seeds produced in enclosed ovaries Phylum Magnoliophyta

29. Flowers with parts mostly in fours and fives; cotyledons two

Class Magnoliopsida

29. Flowers with parts mostly in threes; cotyledon one Class Liliopsida

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  • ora hussey
    What organisms are present in the reserve?
    8 years ago

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