Question

a paragraph on morphology of cockroaches

Answer 1

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● The adults of the common species of cockroach, Periplaneta Americana are about 34 to 53 mm long. With wings that extend beyond the tip of the abdomen in males.


●The body of cockroach is segmented and divided into 3 parts. i.e. head , thorax and abdomen.

●The entire body is covered by hard exoskeleton has hardened plates called sclerites that are joined to each other by a thin and flexible articular membrane.


●Head is triangular in shape . Neck is flexible made from 6 segments. A pair of thread like antenna arise from socket or skull.


●Eyes are compound. Anterior ennd of the head bears appendages forming biting and chewing type type of mouth parts.


● Thorax consists of 3 parts. i.e.

↔ Prothorax

↔Mesothorax

↔Metathorax.


●Head and neck are connected with the help of Prothorax.

● Wings are arise from Mesothorax and metathorax.

● The abdomen in both male and female are contains 10 segments. males bears a pair of short, thread like anal style which is absent in female s.




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