Question

Give the external features of cockroach

Answer 1

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Systematic position

-kingdom

animalia (cell wall absent, heterotrophic nutrition)

-phylum

Arthropods (jointed appendages are present, segmented body, chitinous exoskeleton

-class

Insects (Two pairs of wings and three pairs of walking legs are present)

-Genus

periplaneta (Nocturnal, straight wings)

-species

Americana (origin is in continent of America)

Answer 2

The exoskeleton is coated with wax impermeable to water. It protects the body from loss of water and provides rigidity and surface for attachment of body muscles. The adjacent segments are joined by thin, soft and flexible arthroidal membrane. The body is divisible into head, thorax and abdomen.

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