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Write a short note on ootheca. |
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Answer» A pair of white and branched collaterial glands present behind the ovaries forms a hard egg case called oothcca around the eggs. Ootheca is a dark reddish to blackish brown capsule about 12 mm long which contains nearly 16 fertilized eggs and dropped or glued to a suitable surface, usually in crack or crevice of high relative humidity near a food source. On an average, each female cockroach produces nearly 15 – 40 oothecae in its life span of about one to two years. |
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