write an essay about the grate life history of Cockroach
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Answer:
The cockroaches are an ancient group, dating back at least as far as the Carboniferous period, some 320 million years ago. Those early ancestors, however, lacked the internal ovipositors of modern roaches. Cockroaches are somewhat generalized insects without special adaptations like the sucking mouthparts of aphids and other true bugs; they have chewing mouthparts and are likely among the most primitive of living Neopteran insects. They are common and hardy insects, and can tolerate a wide range of environments from Arctic cold to tropical heat. Tropical cockroaches are often much bigger than temperate species, and, contrary to popular belief, extinct cockroach relatives (Blattoptera) and 'roachoids' such as the Carboniferous Archimylacris and the Permian Apthoroblattina were not as large as the biggest modern species.
Some species, such as the gregarious German cockroach, have an elaborate social structure involving common shelter, social dependence, information transfer and kin recognition. Cockroaches have appeared in human culture since classical antiquity. They are popularly depicted as dirty pests, although the majority of species are inoffensive and live in a wide range of habitats around the world.
Explanation:
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Explanation:
Cockroaches are found in warm, dark and damp places. They commonly inhabit kitchens, restaurants, store houses, godowns, railway wagons, ships, etc. They are numerous in underground drains.
They are nocturnal insects preferring darkness and become active during night, but remain hidden under some objects and take rest during day time.
Cockroaches are omnivorous in diet, feeding on almost all kinds of food matter including human food, paper, leather, cloth and even dead bodies of their fellows (show cannabilism). They prefer starch containing food. Cockroaches are cursorial insects, viz., run very fast. They fly very rarely as they are not good fliers.
Cockroaches are unisexual, viz., male and female sexes are found in different individuals. They show sexual dimorphism, viz., one sex can be distinguished from the other externally. Cockroaches are oviparous, viz., they lay eggs. Parental care is seen in these insects.
The young cockroaches, called the nymphs, resemble the adults in most of the characters, but are smaller in size, pale in colour, devoid of wings. Nymphs undergo moulting or ecdysis, in which the casting of older skin takes place. The nymphs gradually change into adults.
Lizards, birds, moles and even toads are the chief enemies of the cockroaches.
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