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9. Differentiate between territory and home range. 10. Highlightfour unique hallmarks that set chordates apart from all other phyla (4 SECTION B (30 MARKS):ATTEMPT ANY TWO OUESTIONS IN THIS SEC 11. Discuss hair as a unique characteristic of class mammalia V 12. Describe four different forms of bird wings 13. Discuss the economic importance of the following classes of animals to man: a) Amphibians c b) Reptiles 7 -END. (4 a as
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9. Territory refers to an area that an animal or a group of animals claims and defends against others, while home range is the area where an animal or a group of animals lives and moves on a regular basis, but does not actively defend against others.10. Four unique hallmarks that set chordates apart from all other phyla are: a) Notochord: a flexible, rod-shaped body found in the embryonic stage of all chordates. b) Dorsal hollow nerve cord: a nerve cord that runs along the back of the organism, which later develops into the central nervous system. c) Pharyngeal gill slits: openings in the throat that lead to the outside of the body, found in all chordates. d) Post-anal tail: a tail that extends beyond the anus, found in all chordates.11. Hair is a unique characteristic of class Mammalia because it serves various functions such as insulation, protection, and sensory perception. It helps in regulating body temperature, protecting the skin from external factors, and providing sensory input.12. Four different forms of bird wings are: a) Elliptical wings: found in birds like pigeons and doves, these wings are elongated and rounded at the tips. b) Alula wings: found in birds like owls, these wings are small and located on the front of the bird's body, used for maneuvering and landing. c) Flightless wings: found in birds like ostriches and emus, these wings are reduced to mere vestigial structures. d) Bat-like wings: found in birds like bats, these wings are elongated fingers covered with a thin membrane, allowing for agile flight.13. The economic importance of the following classes of animals to man are: a) Amphibians: Amphibians play a crucial role in the ecosystem as they help in controlling the population of insects and other pests. They also serve as indicators of environmental health, as their sensitivity to changes in the environment can provide valuable information about the state of ecosystems. b) Reptiles: Reptiles are important for various economic activities such as agriculture, where they help in controlling pests. They also have cultural and aesthetic value, and are often kept as pets. Additionally, reptiles are used in scientific research and medical studies.