The body of cockroach is narrow, elongated and bilaterally symmetrical. 2. Antennae: Each antenna is long, slender and many-jointed (Fig. Mandibles, 1st maxillae, 2nd maxillae and hypo pharynx constitute the mouth parts. The excretory organs consist mainly of numerous Malpighian tubules and nephrocytes (Fig. The female reproductive system consists of a pair of ovaries, a pair of oviducts, a pair of colleterial glands, a pair of spermathecae and a gonopore (vulva) (Fig. The nervous system comprises of central nervous system, peripheral nervous system and visceral nervous system (Fig 25.32): It consists of a brain or supraoesophageal ganglia, sub-oesophageal ganglia, circumoesophageal connectives and a double ventral nerve cord with ganglia. Cellular aggregate level C. Tissue level D. Organ system level i. Pheretima ii. Paired, given off from the brain and end in the compound eyes and the antennae. Cite . cephalic vein. The walls of the tracheoles allow gaseous exchange and diffusion takes place between the cell sap and the lumen of the tube. Which of the following digestive enzyme is present in the saliva of cockroach? 25.25). The pair fused to form a labium. It represents a) tergum of the first abdominal segment b) sternum of the first abdominal segment c) tergum of the first thoracic segment d) sternum of the first thoracic segment 5. Ten pairs of respiratory apertures called stigmata, two in the thorax and eight in the abdomen are present on the sides of the body. The anal cerci are possibly the relics of last abdominal appendages (Fig. A pair of small spherical glands, 0.5 mm in diameter, ectodermal in origin, close to the oesophageal glands, behind corpora cardiaca. The thoracic ganglia are large in size. Q52) From the following statements select the wrong one. Paired nerves from each abdominal ganglion end in the organs of the corresponding segment. A round, thick- walled, muscular structure, posterior to the crop. The styles of male and the gonapophyses are possibly relics of appendages. Pes or pod. A pair of many jointed, long, slender feelers or antennae are present just below the eyes. Here we have given NCERT Exemplar Class 11 Biology Chapter 4 Animal Kingdom. (CBSE AIPMT 2005) Euglena Amoeba Paramecium Trypanosoma. These are in the form of hairs, bristles, plates, spines, etc. TOS4. ii. The tracheoles end in tissues. (1) Mouth is located anteriorly beneath the labrum and between the mandibles; the mouth parts are adapted for biting. Solution: The main characteristics of class Crustacea and insecta are as follows: (i) Class Crustacea: Mostly aquatic with gills, two pairs ofjaws, appendages mostly biramous and always more than four in the trunk region.Example : prawn, crab, lobster etc. iii. a. NCERT Exemplar Class 11 Biology Chapter 4 Animal Kingdom Multiple Choice Questions Q1. Clam worm, apple snail. The pronotum of cockroach is largest sclerite. The German cockroach is particularly successful for the following reasons: 1. A pair of compound eyes, appearing as Reni form black patches, are present on the sides of the head. Cockroach. Animal Kingdom - Live Session - 04 June 2020 Contact Number: 9667591930 / 8527521718 Male and female Cockroach. Abdomen. The respiratory organs consist of tracheae or air tubes and their branches or tracheoles which are directly communicated with the exterior (Fig. Lack of an ovipositor; Female cockroaches lack an ovipositor, which is an appendage used to lay eggs. It maintains equilibrium of the animal. Which of the following digestive enzyme is present in the saliva of cockroach? Liver fluke has bilateral symmetry, sea anemone has radial symmetry and sea-cucumber has bilateral symmetry in larval form and radial symmetry in adult form. With Plate XXXV. Holding and masticating the food and sensory. A. 33). 25.30). 269 ATPD SSTEMATICS PLGEN — 74 )(3 2016 only partly covered in Beutel et al. The heart is anteriorly continued into the head as a slender tube, the aorta. Sixteen centrolecithel eggs from each ovary pass to the genital pouch through the oviduct and fertilized there. Body Cavity of Cockroach 3. The haemolymph bears no respiratory pigment and, as such, it is not concerned with respiration. NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. 25.28) lie on the dorsolateral aspects of the crop. Apparently it seems that with Clione they are inserted around the mouth, while with Pneumodermon and Cirrifer they are inserted on the internal wall of the buccal cavity. The embryonic blastocoel and coelom unite to form the adult body cavity, known as haemocoel. Cephalic. NCERT Exemplar Class 11 Biology Chapter 4 Animal Kingdom are part of NCERT Exemplar Class 11 Biology. Major part of the haemocoel is occupied by fat bodies, digestive, excretory and reproductive organs and these structures are bathed in haemolymph. The models' cephalic boundaries (figure 2) were approximated on the basis of the preserved lateral margins. By Paul Pelaeneer, ».S©BS Brussels. In short their homologies are very obscure.3 We have stated that in the Gymnosomata there exists in a constant manner two pairs of tentacles properly so called. Present on the labial palps and their adjacent areas and ridges on the segments of the leg. Sensitive to chemical stimuli—smell or touch. Endocrine organs, corpora cardiaca, corpora allata and prothoracic glands constitute the endocrine system. Each spiracle is controlled by muscular valves. Homometabolous insects have different types of mouthparts in their larvae and adults. The wall of the trachea is strengthened by chitinoid lining in the firm of spiral threads. The nerve cord bears nine pairs of ganglia, three pairs in the thoracic segments and six pairs in the first six abdominal segments. Please log in to add an alert for this article. Which of the following is a part of a lower appendage? 4. Eight occur on each side of the abdomen between terga and sterna of the first eight segments. CEPHALIC NEUROENDOCRINE REGULATION OF INTEGUMENTARY WATER LOSS IN THE COCKROACH PERIPLANETA AMERICANA L. BY JOHN NOBLE-NESBIT ANTD MARWAN AL-SHUKUR* School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ Accepted 4 January 1988 Summary Our experiments show that the brain of cockroaches produces, stores (tempor-arily or otherwise) and … The nerve cord is formed by the fusion of two solid nerve cords and run backwards from the sub-oesophageal ganglia along the mid-ventral line of the thorax and abdomen. 1. 25.25; 25.26): 1. They are tactile sense organs. Disclaimer Copyright, Zoology Notes | Exclusive Notes on Zoology for Students, Essay on Earthworm: Feeding and Digestion, Cockroach: Digestive and Reproductive System | Invertebrates | Zoology, Cockroach: Introduction, Feeding and Digestion in Cockroach, Frog: Digestive, Respiratory & Reproductive System | Zoology, Neanthes (Sandworm): Description and Features | Phylum Annelida, Essay on the External Features of Cockroach, Essay on the Digestive System of Cockroach, Essay on the Respiratory System of Cockroach, Essay on the Circulatory System of Cockroach, Essay on the Excretory System of Cockroach, Essay on the Endocrine System of Cockroach, Essay on the Reproductive System of Cockroach, Essay on the Fertilization and Development in Cockroach. It is a large bilobed mass at the posterior part of the head, below the epicranial plates and above the oesophagus and formed by the fusion of three pairs of ganglia (Fig. 25.29). 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