ANIMAL MORPHOLOGY- COCKROACH Flashcards
The dorsal segment of each segment in cockroach consists of
Dorsal tergum, ventral sternum and lateral pleura
The chitinous plate in covkroaches are k/a
Sclerites
The sclerites are joined by a ___ membrane k/a ____
The sclerites are joined by an articular membrane known as arthrodial membrane
The body of cockroach is divided into
- Head
- Thorax
- Abdomen
The head is ___ in shape
Triangular
The head of cockroach is ___ type
Biting and Chewing type
The antenna bears ___ receptors
Tactile and olfactory receptors
Which mouth part acts as tongue
Hypopharynx
The thorax is divided into __ segments, they are
3 segments:
1. Anterior Prothorax
2. Middle Mesothorax
3. Posterior Metathorax
The forewing are also known as
Wing cover/ tegmina/ elytra
Which pair of wings is used for flight
Hind wings
Abdomen has __ segment in adults and ____ in embryo
Abdomen has 10 segments in adults and 11 segments in embryo
What is the functional of anal cerci
They are sensitive to sound and other vibrations
The anal cerci is present in
10th tergum
Anal styles is present in
9th sternum in male cockroaches only
The genital aperture is surrounded by some sclerites known as
Gonapophyses or Phallomeres
Anus lies in
10th abdominal segment
The alimentary canal of cockroaches consists of
- Foregut/ stomodaeum
- Midgut/mesenteron
- Hindgut/ proctodaeum
The foregut consists
Mouth, pharynx, oesophagus, crop, gizzard
Between the junction of gizzard and mid gut there is presence of
Hepatic or gastric caecae.. they are 6-8 in number
The junction between midgut and hindgut is
Malphigian tubules… it is 100-150 in number
The hindgut comprises of
Illeum, rectum and colon
The circulatory system of cockroach consists of
Blood/haemolymph, heart, haemocoel and anterior aorta
The heart of cockroach is myogenic/neurogenic
Neurogenic
What is Haemocoel
The body cavity of cockroach is filled with blood and thus, it is k/a Haemocoel
How many pairs of alary muscles are found in the heat of cockroach
12 pairs
