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Questions and Answers
What does the term 'abdomen' refer to in insects?
What does the term 'abdomen' refer to in insects?
- The first division of the insect body
- The third or posterior division of the insect body (correct)
- The entire body excluding the head and legs
- The middle division of the insect body
What is the primary function of the antennas in insects?
What is the primary function of the antennas in insects?
- To assist in digestion
- To serve as sensory organs (correct)
- To protect the head
- To aid in reproduction
The term 'diapause' refers to what condition in insects?
The term 'diapause' refers to what condition in insects?
- A period of mating
- A phase of rapid development
- A time of increased activity
- A condition of suspended animation (correct)
Which part of the insect body is modified to form a hard shell known as elytra?
Which part of the insect body is modified to form a hard shell known as elytra?
In the anatomical terminology of insects, what does 'dorsal' refer to?
In the anatomical terminology of insects, what does 'dorsal' refer to?
What defines a 'fugal feeder' insect?
What defines a 'fugal feeder' insect?
Which term describes an elevated ridge found on certain insect's bodies?
Which term describes an elevated ridge found on certain insect's bodies?
What is meant by the term 'grub' in entomological terms?
What is meant by the term 'grub' in entomological terms?
What is the primary function of mandibles in insects?
What is the primary function of mandibles in insects?
What does the term 'punctures' refer to in insect morphology?
What does the term 'punctures' refer to in insect morphology?
Which segment of the thorax bears the second pair of legs and the first pair of wings?
Which segment of the thorax bears the second pair of legs and the first pair of wings?
What is the purpose of puparia in the insect life cycle?
What is the purpose of puparia in the insect life cycle?
What characteristic does the term 'serrate' describe?
What characteristic does the term 'serrate' describe?
Which of the following describes 'pubescence'?
Which of the following describes 'pubescence'?
What does 'terminal' refer to in the context of urogomphi?
What does 'terminal' refer to in the context of urogomphi?
Which term describes the upper surface of a specific body segment in insects?
Which term describes the upper surface of a specific body segment in insects?
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Study Notes
Physiology and Toxicology
- Physiology studies the functions of living organisms and their parts.
- Toxicology focuses on the impacts, detection, and antidotes of poisons.
Insect Physiology
- Insects are self-replicating metabolic systems, similar to other life forms such as weeds and pathogens.
Key Terms Related to Insect Anatomy
- Abdomen: Posterior part of the insect body.
- Antennae: Paired sensory organs on the insect's head.
- Apex: Farthest point from the base of a body part.
- Bionomial: Scientific name comprising two parts.
- Carina: Elevated ridge on an insect's surface.
- Coleoptera: Order of insects known as beetles, meaning sheath-winged.
Anatomical Features
- Concave: A hollowed or depressed area; Convex: Curved outward.
- Elytra: Hard shell formed from the first pair of modified wings.
- Frons: Upper anterior portion of the insect's head.
- Mandibles: Insects’ first pair of jaws.
Developmental Terms
- Diapause: A state of suspended animation where no development occurs.
- Larva/Larvae: Immature stage of juvenile insects.
- Moult: Shedding of outgrown skin during larval growth.
Functional Roles in Ecology
- Fungal feeder: Insects that feed primarily on fungi associated with stored grain.
- Scavenger: Organisms that consume decaying or waste matter.
Insect Body Structure
- Mesothorax: Middle thorax segment, supports middle legs and first pair of wings.
- Metathorax: Last thorax segment, supports hind legs and second pair of wings.
- Pronotum: Dorsal surface of the prothorax appearing as mid-segment from above.
Term Clarifications
- Ocellus: A simple eye with a single lens in adult insects.
- Punctures: Small impressions on the insect's outer body.
- Pubescence: Short, soft hairs on the insect surface.
- Terga/Tergum: Upper surface of body segments; multiple segments (terga) vs. one segment (tergum).
Morphological Terms
- Crenulate: Having small scallops or rounded edges.
- Serate(d): Saw-like or toothed structure.
- Sub-basal: Below the attachment point of a structure.
Miscellaneous Terms
- Horns: Pointed projections on the head.
- Temple: Area between the eye and the back of the head.
- Tubercle: Small bumps or projections on a surface.
- Urogomphi: Structures found on the terminal segment of certain insects.
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