14 Questions
What is the correct way to write a species name in the binominal system?
Genus in capital letter and species in lower case
Which of the following is NOT a principal taxon?
Domain
What characterizes the Bryophyta division of the plant kingdom?
They are plants of very short stature
Which phylum includes snails, clams, and octopuses?
Mollusca
What is a characteristic of the Porifera phylum?
They have asymmetrical bodies
What is a characteristic of the Cnidaria phylum?
They have radial symmetry
What is a characteristic of the Annelida phylum?
They have bilateral symmetry
Which characteristic is shared by all Mollusca?
Bilateral symmetry
Which division of the plant kingdom produces seeds?
Angiospermophyta
What is the main function of a dichotomous key?
To establish which taxa an organism belongs to
Which of the following is a characteristic of Chordata?
Presence of a nervous system
What is the main difference between Oviparous and Viviparous reproduction?
The development of offspring inside or outside the mother's body
Which domain includes organisms with a vascular system?
Eukaryota
Which characteristic is unique to Mammals?
Mammary glands
Study Notes
Binominal System
- Always written in italics
- Genus in capital letter, species in lower case
Taxonomic Ranks
- Principal taxa: Kingdom, Phylum, Class, Order, Family, Genus, Species
Plant Kingdom Divisions
- Bryophyta: Mosses, very short stature
- Filicinophyta: Ferns and horsetails
- Coniferophyta: Pine trees
- Angiospermophyta: Flowering plants
Animal Kingdom Phylum
- Porifera: Sponges
- Cnidaria: Sea jellies and coral polyps
- Platyhelminthes: Flatworms
- Annelida: Segmented worms
- Mollusca: Snails, clams, octopuses
- Arthropoda: Insects, spiders, crustaceans
- Chordata: All vertebrates
Features of Plant Kingdom Divisions
- Bryophyta: No vascular system
- Filicinophyta: No seeds
- Coniferophyta: Naked seeds and cones
- Angiospermophyta: Vascular system, seed production in closed organs
Phylum Characteristics
- Porifera: Asymmetrical, water flows, diffuse oxygen
- Cnidaria: Radial symmetry, polyp and medusa, carnivorous
- Platyhelminthes: Bilateral symmetry, soft covering, feed on bacteria
- Annelida: Bilateral symmetry, tube-shaped, segmented
- Mollusca: Bilateral symmetry, some have shells, nervous system
- Arthropoda: Symmetrical, segmented body, chitin
- Chordata: Bilateral symmetry, distinct body shapes, complete digestive system
Taxon Characteristics
- Porifera: Asymmetrical, thin, no mouth or anus
- Cnidaria: Radial symmetry, no brain or heart
- Platyhelminthes: Bilateral symmetry, soft covering, incomplete digestive system
- Annelida: Bilateral symmetry, tube-shaped, segmented
- Mollusca: Bilateral symmetry, some have shells, nervous system
- Arthropoda: Symmetrical, segmented body, chitin
- Chordata: Bilateral symmetry, distinct body shapes, complete digestive system
Chordata Sub-Phylum Characteristics
- Fish: Bilateral symmetry, distinct body shapes, complete digestive system
- Amphibians: Bilateral symmetry, moist skin, complete digestive system
- Reptiles: Bilateral symmetry, dry scales, complete digestive system
- Birds: Bilateral symmetry, wings, feathers, complete digestive system
- Mammals: Bilateral symmetry, mammary glands, hair, complete digestive system
Dichotomous Keys
- Used to establish which taxa an organism belongs to
- Example: Questions about vascular system, seeds, and naked seeds to determine plant kingdom division
This quiz covers the basics of biological classification, including the binomial system, principal taxa, and divisions of the plant and animal kingdoms.
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