Chapter 20 Flashcards
What are animals without backbones?
invertebrates
What are invertebrates with jointed appendages?
arthropods
What is an external skeleton?
exoskeleton
What is the most varies and numerous of all God’s living creatures?
insects
What are scientists that study insects?
entomologists
What are the three distinct regions of an insect?
head, thorax, and abdomen
What are “feelers” that all insects have a single pair of?
antennae
What are breathing tubes that insects use to breathe?
tracheae
What is the wonderful process in which an insect matures?
metamorphosis
What is the process in which an insect metamorphoses from a wingless nymph into an adult?
incomplete metamorphosis
What is the process in which an insect metamorphosis from a larva into a pupa and then into an adult?
complete metamorphosis
What is the front segment of a grasshopper’s body?
head
What are feelers which give a grasshopper an excellent sense of smell, touch, and taste?
antenna
What type of eyes on a grasshopper can detect only light and shadow?
simple eyes
What type of eyes on a grasshopper are sensitive to shape, color, and movement?
compound eyes
What is a small mass of nerve tissue located in an insect’s head?
brain
What are the components of an insect’s mouth collectively known as?
mouthparts
What are the two mouthparts designed specially for chewing and for the upper and lowers “lips”?
labrum and labium
What are the two mouthparts that form the jaws of an insect?
mandibles and maxillae
What is the middle part of a grasshopper’s body?
thorax
What is the rearmost portion of a grasshopper’s body that contains most of the insect’s vital organs?
abdomen
What is a single eardrum that most insects have?
tympanum
What part of an insect carries the eggs away from each ovary?
oviduct
What is a hard, sharp-pointed organ that a female grasshopper uses to dig a hole in the soil where she will later lay eggs?
ovipositor
