Question

Which are the two common Indian cockroaches?
(a) Periplaneta americana and Blatta indica
(b) Periplaneta indica and Blatta orientalis
(c) Periplaneta orientalis and Blatta americana
(d) Periplaneta americana and Blatta orientalis

Answer 1

One is derived from America and the other one is very dark brown in color.
The American cockroach Periplaneta americana and the Oriental cockroach Blatta orientalis common species known to India.
Complete answer:
Periplaneta Americana
The adult of the American Cockroach is around 35 to 40 mm in length. It is identified for its large size. The color is shiny and ranges from red to chocolate brown. The female species can lay between 10 to 90 egg cases. The young of this species take 150 days to become adults. Now, do not gasp at the duration. It is from 100 days to three years. These cockroaches are mainly found in humid and warm environments such as drains and sewers.
Blatta orientalis
The adult becomes a minimum of 25 to 32 mm in length. Its color is very dark brown. The wings are undeveloped in the females and cover three by fourth lengths of the abdomen of the male. The female species can lay 14 eggs in an egg case. Nymphs take up to 1 year to develop into adults. But the development period of young is more in the Oriental Cockroaches. And the lifecycle of an adult is six months. This species rather runs than flies and has the ability to tolerate low temperatures. The main feed of Oriental Cockroaches is garbage and organic material.
So, the correct answer is “ Periplaneta americana and Blatta orientalis.”
Note: There are over 4,000 different species of cockroaches across the planet of which only about 40 species are considered pests while others have seen to be beneficial in their natural habitats.