Arthropods

Question 1

an invertebrate animal of the large phylum Arthropoda, such as an insect, spider, or crustacean.

Answer 1

arthropods

Question 2

(of an animal) shed old feathers, hair, or skin, or an old shell, to make way for a new growth.

Answer 2

molting

Question 3

a chemical substance produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.

Answer 3

pheromones

Question 4

the part of the body of a mammal between the neck and the abdomen, including the cavity enclosed by the ribs, breastbone, and dorsal vertebrae, and containing the chief organs of circulation and respiration; the chest.

Answer 4

thorax

Question 5

the part of the body of a vertebrate containing the digestive organs; the belly. In humans and other mammals, it is bounded by the diaphragm and the pelvis.

Answer 5

abdomen

Question 6

the fused head and thorax of spiders and other chelicerate arthropods

Answer 6

cephalothorax

Question 7

a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.

Answer 7

exoskeleton

Question 8

one of the pair of legs that bears the large chelae in decapod crustaceans.

Answer 8

cheliped

Question 9

a tubular excretory organ, numbers of which open into the gut in insects and some other arthropods.

Answer 9

malpighean tubes

Question 10

an arthropod of the class Arachnida, such as a spider or scorpion.

Answer 10

arachnid

Question 11

an eight-legged predatory arachnid with an unsegmented body consisting of a fused head and thorax and a rounded abdomen. Spiders have fangs that inject poison into their prey, and most kinds spin webs in which to capture insects.

Answer 11

spiders

Question 12

a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.

Answer 12

metamorphosis

Question 13

an arthropod of the large, mainly aquatic group Crustacea, such as a crab, lobster, shrimp, or barnacle.

Answer 13

crustaceans

Question 14

a small arthropod animal that has six legs and generally one or two pairs of wings

Answer 14

insects

Question 15

either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods.
2.

Answer 15

antennae

Question 16

a terrestrial arachnid with lobsterlike pincers and a poisonous sting at the end of its jointed tail, which it can hold curved over the back. Most kinds live in tropical and subtropical areas.

Answer 16

scorpions

Question 17

another term for pleopod.

Answer 17

swimmerets

Question 18

one of a pair of large green glands in some crustaceans (such as crayfishes) that have an excretory function and open at the bases of the larger antennae.

Answer 18

green glands

Question 19

Any of various ticks of the genus Dermacentor that occur in wooded areas, infest mammals, and transmit the microorganisms that cause Rocky Mountain spotted fever and tularemia in humans.

Answer 19

woodtick

Question 20

a plant-eating insect with long hind legs that are used for jumping and for producing a chirping sound. It frequents grassy places and low vegetation.

Answer 20

grasshopper

Question 21

an insect with two pairs of large wings that are covered with tiny scales, usually brightly colored, and typically held erect when at rest. Butterflies fly by day, have clubbed or dilated antennae, and usually feed on nectar.

Answer 21

butterfly

Question 22

a common small fly occurring worldwide in and around human habitation. Its eggs are laid in decaying material, and the fly can be a health hazard due to its contamination of food.

Answer 22

housefly

Question 23

a slender long-legged fly with aquatic larvae. The bite of the bloodsucking female can transmit a number of serious diseases including malaria and encephalitis.

Answer 23

mosquito

Question 24

a crustacean with a broad carapace, stalked eyes, and five pairs of legs, the first pair of which are modified as pincers. Crabs are abundant on many shores, especially in the tropics, where some have become adapted to life on land.

Answer 24

crab

Question 25

a large marine crustacean with a cylindrical body, stalked eyes, and the first of its five pairs of limbs modified as pincers.

Answer 25

lobster