Cockroaches belong to the class Insecta of phylum Arthropoda.The scientific name of cockroach is Periplaneta americana. The body of a cockroach is dorso-ventrally flattened and is covered in a hard, brown chitinous exoskeleton. Body of Periplaneta is segmented (Fig. The body of a cockroach is dorso-ventrally flattened and is covered in a hard, brown chitinous exoskeleton. 700+ SHARES ... Also called mesothoracic wings or tegmina Opaque, dark and leathery Cover the hind wings when at rest Used in flight Answer : D Solution : Forewings are not used in flight. (4) They cover hindwings when at rest. The male’s forewings extend past the end of the abdomen and are marked with two dark patches in the basal half. To view Explanation, Please buy any of the course from below. This article is about an insect's wing. Almost all cockroaches are nocturnal. For the inner coat of plant seeds, see, Learn how and when to remove this template message, "tegmen | Definition of tegmen in English by Oxford Dictionaries", https://en.wikipedia.org/w/index.php?title=Tegmen&oldid=994656023, Articles needing additional references from December 2009, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 16 December 2020, at 21:08. The hindwings are transparent, membranous and are used in flight. Malpighian tubules of cockroach are lined by which of the following cells ? Match the structure (i), (ii), (iii), (iv) with their correct location respectively: Which among the following statements are incorrect about cockroach? (1) It has mosaic vision with high sensitivity and less resolution. ... Also called mesothoracic wings or tegmina Opaque, dark and leathery Cover the hind wings when at rest Used in flight Answer : D Solution : Forewings are not used in flight. Also in public buildings and domestic premises eg apartment blocks. Gregarious and nocturnal, they spend the day hiding in cracks and crevices around such areas as sinks, drains, cookers, the backs of cupboards and in refrigerator motor compartments. Log in. Biology. The forewings are sometimes extended to cover the body of the roach. Which of the following features is used to identify a male cockroach from a female cockroach? The first pair of wings arise from mesothorax and the second pair from metathorax. Ans. They can fly short distances and are very attracted to outdoor lighting. Which among the following statements are incorrect with respect to cockroach ? The American roach (also known as a “water bug” or “palmetto bug”) is a large cockroach that can measure up to two inches in length. Most species are glass-like although some are opaque. They are called hemelytron (pl. Presence of a boat-shaped sternum on the 9th abdominal segment. Midgut- It is also known as mesenteron or ventriculus. The entire body is segmented and divisible into the head, thorax and abdomen. Another difference between the two is the light yellow bands found on the forewings of the Australian cockroach. Both forewings and hindwings of Cicada are membranous. (2) Salivary reservoir has eight highly chitinous plates called as teeth. Join now. You’ve gone to the bathroom and there, on the shower’s tile wall, you see it – a black spot, a bug… a cockroach. 1.118) and are organised to form three distinct spe­cialised parts, each of which is called a tagma. In the following diagram, A, B, C, D and E respectively are: (1) Salivary ducts, crop, gizzard, malpighian tubules, ileum, (2) Salivary reservoir, gizzard, hepatic caeca, malpighian tubules, ileum, (3) Salivary reservoir, gizzard, ileum, malpighian tubules, hepatic caeca, (4) Salivary duct, midgut, hepatic caeca, malpighian tubules, ileum. 3. Blattodea (cockroaches, termites) In cockroaches, 2 pairs of wings; thickened forewings called tegmina; hindwings folded longitudinally fanwise; hindlegs similar to middle ones, adapted for running; tarsi of legs 5-segmented; mandibulate mouthparts, adapted for chewing. They are particularly fond of living in restaurants, … Complete the following sentence by choosing the appropriate option: Digestive juice in cockroach is secreted by a ring of blind tubules which are ______ in number. Mention tne functions of following organs forewings of cockroach - 13070911 1. (3) Tracheoles carry oxygen from air to all other body parts. Which of the following is incorrect for forewings of cockroach ? These wings are anteriorly present. The large (40 mm), shiny red American cockroach, Periplaneta Americana and the so-called Australian cockroach, P. australasiae, which originated in Asia, are an integral part of domestic life. 2.2k LIKES. 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