Describe the typical insect's head and list it's three functions
Hollow capsule formed from six fused segments that contain the brain.
Locating and taking food.
Recognizing mates, cohorts, and enemies.
Sensing danger.
Name and describe the hardening of the cuticle of an insect
Sclerotization- Sclerotin molecules bond together to form a protein matrix. Chitin fills the gaps in the matrix. The epicuticle is coated with wax, and sometimes cement, which produces the waterproof outer layer.
If an insect has a bead like antennae, it's called
Moniliform
Define epicuticle
Wax coating found on the outer most layer that provides a barrier to water loss from the insect's body. Disruption of this layer can cause water imbalance, which leads to death from desiccation. It is believed that inorganic pesticides such as diatomaceous earth kill in this manner.
Insects antennae has a head, it's called
Capitate
If an insect has a leaf like antennae, it's called
Lamellate
Describe piercing-sucking insect mouthparts
A proboscis, or snout, a slender tubular beak within which are are enclosed four long, slender stylets. Stylets pierce the tissue and suck up the liquid food.
Name the living and nonliving layers of cells making up an insect's exoskeleton
Epidermis (living)
Cuticle (nonliving)
Describe the five functions of an insect's antennae
Navigation, food location, communication with other members of the same species, mate location, and grasping in some species.
Describe a capitate antennae
Having a head
Insects respond instinctively in a largely automatic manner. There is no intelligence involved in their reactions. True or false?
True
Name three functions of functional insect wings
Forage for food over great distance, dispersal over wide geographic ranges, quickly escape danger
List six principal types of insect mouthparts
Chewing, chewing-lapping, piercing-sucking, rasping-sucking, siphoning, and sponging
Describe a pectinate antennae
Comb like (pyrochorid beetle)
Name the three segments of an insect
Head, thorax, abdomen
Describe the leg of an insect and its function
Always jointed. Consists of six parts: coxa and trochanter connect insect leg to the body, with the trochanter being between the coxa and femur. The femur corresponds more or less to the thigh of humans, and the tibia to the lower leg. The tarsus is composed of several joints and corresponds to the foot. The last tarsal segment usually bears a pair of claws, and frequently pads or lobes between the claws. These claws and pads form the pretarsus.
Insect has a saw-like antenna, it's called
Serrate
And insect's cuticle is primarily made up of what two substances?
Sclerotin (protein)
Chitin (polysaccharide)
Describe siphoning mouth parts in insects and describe their function
Identifiable by the elongated lower jaw in moths and butterflies. The parts are interlocked to form a long slender tube through which exposed liquids are sucked up. This tube or "tongue" is coiled like a watch spring when not in use.
Define ocelli
Simple eyes located on the upper part of the head between the compound eyes, and only perceive light. Insects may have 0 to 3 simple eyes in adult stage.
Describe an aristate antennae
Feathery bristles (flies)
What two structures can be found on the thorax of an insect?
