Adult insects typically show tagmatosis into head, thorax, and abdomen. The head handles feeding and sensory functions, the thorax bears legs and wings, and the abdomen contains many visceral and reproductive organs.
Correct Answer: B. jointed appendages and a chitinous exoskeleton
Explanation:
Insects are arthropods because they share jointed appendages, segmented bodies, and a chitin-based exoskeleton. These features distinguish them from chordates, echinoderms, and molluscs.
Correct Answer: B. jointed appendages and a chitinous exoskeleton
Explanation:
Insects are arthropods because they share jointed appendages, segmented bodies, and a chitin-based exoskeleton. These features distinguish them from chordates, echinoderms, and molluscs.
Correct Answer: A. jointed appendages and a chitinous exoskeleton
Explanation:
Insects are arthropods because they share jointed appendages, segmented bodies, and a chitin-based exoskeleton. These features distinguish them from chordates, echinoderms, and molluscs.
Correct Answer: D. jointed appendages and a chitinous exoskeleton
Explanation:
Insects are arthropods because they share jointed appendages, segmented bodies, and a chitin-based exoskeleton. These features distinguish them from chordates, echinoderms, and molluscs.
Correct Answer: D. a waterproof cuticle, flight, small body size, and high reproductive rate
Explanation:
Insects became highly successful because several traits work together: a protective cuticle reduces water loss, wings help dispersal, small size allows use of tiny habitats, and rapid reproduction supports fast population growth.
Correct Answer: B. a waterproof cuticle, flight, small body size, and high reproductive rate
Explanation:
Insects became highly successful because several traits work together: a protective cuticle reduces water loss, wings help dispersal, small size allows use of tiny habitats, and rapid reproduction supports fast population growth.
Correct Answer: D. a waterproof cuticle, flight, small body size, and high reproductive rate
Explanation:
Insects became highly successful because several traits work together: a protective cuticle reduces water loss, wings help dispersal, small size allows use of tiny habitats, and rapid reproduction supports fast population growth.
Correct Answer: C. a waterproof cuticle, flight, small body size, and high reproductive rate
Explanation:
Insects became highly successful because several traits work together: a protective cuticle reduces water loss, wings help dispersal, small size allows use of tiny habitats, and rapid reproduction supports fast population growth.
Correct Answer: A. Increases delivery of immune cells and defensive chemicals
Explanation:
Inflammation increases blood flow and vessel permeability, allowing immune cells and molecules to reach the site. This helps contain pathogens and begin repair.