Study of Animal Type : Cockroach — Flashcards
Maharashtra Board · Class 11 · Biology
20 flashcards for Study of Animal Type : Cockroach (Maharashtra Board Class 11 Biology) to test yourself on key terms and facts.
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What is the complete systematic classification of cockroach (Periplaneta americana)?
Answer
Kingdom: Animalia (no cell wall, heterotrophic) Phylum: Arthropoda (jointed appendages, segmented body, chitinous exoskeleton) Class: Insecta (3 pairs of walking legs, 2 pairs of wings) Genus: Peripla…
Describe the external body division of cockroach and the connecting structures.
Answer
Body is divided into three regions: 1. Head - triangular/ovate, formed by fusion of 6 segments 2. Thorax - three segments (prothorax, mesothorax, metathorax) 3. Abdomen - 10 segments, telescoped poste…
What are the five types of mouthparts in cockroach and their specific functions?
Answer
1. Labrum (upper lip) - covers mouth from above, holds food during feeding 2. Mandibles (true jaws) - dark, hard structures with serrated margins; cut and crush food 3. Maxillae (accessory jaws) - hol…
Describe the structure and function of compound eyes in cockroach.
Answer
Compound eyes are paired, dark, kidney-shaped structures on lateral sides of head. Each eye contains about 2000 hexagonal units called ommatidia. Each ommatidium is a structural and functional unit th…
What are the five podomeres of cockroach leg and their arrangement?
Answer
Each leg has five segments called podomeres: 1. Coxa - attached to body 2. Trochanter - small connecting segment 3. Femur - largest segment 4. Tibia - long segment 5. Tarsus - terminal segment with 5 …
Compare and contrast the forewings and hindwings of cockroach.
Answer
Forewings (Tegmina): - Dark, opaque, thick, leathery - Protective function - Attached to mesothorax Hindwings: - Thin, broad, membranous, transparent - Used for flight (true wings) - Attached to meta…
Describe the three regions of cockroach alimentary canal and their main functions.
Answer
1. Foregut (Stomodaeum): - Includes pharynx, oesophagus, crop, gizzard - Functions: food intake, temporary storage, mechanical breakdown 2. Midgut (Mesenteron): - Includes stomach and hepatic caecae …
What is the structure and function of gizzard (proventriculus) in cockroach?
Answer
Gizzard is a small, spherical organ at the end of foregut. Internal structure: - Six chitinous teeth arranged in a circle - Backward-directed bristles Functions: - Teeth crush and grind food particle…
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