Hexapoda

Question 1

What are compound eyes?

Answer 1

Visual organs found in arthropods, primarily insects and crustaceans.

Question 2

What are ommatidia?

Answer 2

Numerous individual lens units that compose compound eyes.

Question 3

How does each ommatidium function?

Answer 3

As a small, independent visual unit.

Question 4

What type of image do compound eyes produce?

Answer 4

A mosaic of images from individual ommatidia.

Question 5

What are ocelli?

Answer 5

Eyespots that detect light.

Question 6

What is Entognatha?

Answer 6

A class within Hexapoda that are wingless and have internal mouthparts.

Question 7

What is Collembola?

Answer 7

Springtails.

Question 8

What is Diplura?

Answer 8

Two tails.

Question 9

What is Protura?

Answer 9

Cone-headed soil organisms.

Question 10

What is Coleoptera?

Answer 10

Beetles.

Question 11

What is Insecta?

Answer 11

Class of arthropods with three body segments.

Question 12

What is Pterygota?

Answer 12

Winged insects.

Question 13

What is Apterygota?

Answer 13

Wingless insects.

Question 14

What is Lepidoptera?

Answer 14

Butterflies and moths.

Question 15

What is Diptera?

Answer 15

Flies.

Question 16

What is Hymenoptera?

Answer 16

A family of insects that includes bees, wasps, ants, and yellow jackets.

Question 17

What are halteres?

Answer 17

Highly modified wings used for balance rather than flight. Usually are club-shaped structures; found on the metathorax of true flies (Diptera).

Question 18

What are elytra?

Answer 18

The hard, shell-like forewings of beetles.

Question 19

What is direct wing movement?

Answer 19

Wing muscles are directly attached to the wing base, allowing for a direct and controlled movement of the wings.

Question 20

What is indirect wing movement?

Answer 20

The muscles responsible for flight are located within the thorax and are not directly connected to the wings.

Question 21

What is asynchronous flying?

Answer 21

Wing movement is not directly synchronized with nerve impulses.

Question 22

What is the paranotal lobe hypothesis?

Answer 22

This hypothesis suggests that the insect’s wings developed from paranotal lobes.

Question 23

What is haploidiploidy?

Answer 23

Females are diploid, males develop from unfertilized eggs and are haploid. Found in bees, ants, and wasps.

Question 24

What is incomplete metamorphosis?

Answer 24

Egg, nymph, adult.

Question 25

What is complete metamorphosis?

Answer 25

Egg, larva, pupa, adult.

Question 26

What is ametabolous?

Answer 26

No metamorphosis.

Question 27

What is hemimetabolous?

Answer 27

Incomplete metamorphosis; egg, nymph, adult.

Question 28

What is holometabolous?

Answer 28

Complete metamorphosis; egg, larva, pupa, adult.

Question 29

What is a nymph?

Answer 29

The juvenile stage of insects that undergo incomplete metamorphosis.

Question 30

What is a naiad?

Answer 30

An aquatic insect nymph.

Question 31

What is a pupa?

Answer 31

An insect in the inactive stage of development (when it is not feeding) intermediate between larva and adult.

Question 32

What is a larva?

Answer 32

A juvenile stage in the life cycle of many animals, occurring after hatching and before the adult form is reached.

Question 33

What is a tympanum in insects?

Answer 33

A specialized hearing organ consisting of a thin membrane stretched across an opening, often backed by an air-filled space.

Question 34

What are caspases enzymes?

Answer 34

These enzymes dismantle cells during development, remodeling tissues and organs. In metamorphosis, caspases help eliminate larval tissues and facilitate the formation of adult structures.

Question 35

What are imaginal discs?

Answer 35

Group of undifferentiated cells in insect larva that develop into a specific adult structure.

Question 36

What is a tripod gait?

Answer 36

The locomotory mechanism found in hexapods in which three legs support the body (fore- and hind leg on one side, midleg on the other) while the other three legs are lifted to be swung forward.

Question 37

What is a labrum?

Answer 37

A flap-like structure that lies immediately in front of the mouth (upper lip).

Question 38

What is a labium?

Answer 38

The combined second maxillae (the most posterior pair of head appendages) of some insects and myriapods, forming a 'lower lip'.

Question 39

What is a maxilla?

Answer 39

One of a pair of feeding appendages behind the mouth (in front of the mandibles) in most insects and crustaceans.

Question 40

What is a mandible?

Answer 40

Paired appendages just behind the mouth in many insects and crustaceans; hard structure used for seizing and biting food.

Question 41

What is stridulation?

Answer 41

Sound produced by dragging a row of peg-like structures across a file-like structure.

Question 42

What is a tymbal?

Answer 42

In insects, a thickened plate of chitin connected to powerful asynchronous muscles; deflection of this by the muscle produces sound. Typified by cicadas.