For example, the antennal nerve carries, . The excess of nutrients which are not used immediately are converted into fats and are stored in this tissue. However, much of their nervous system activity takes place in nerve ganglia located throughout their bodies. The insect nervous system consists primarily of a brain, located dorsally in the head, and a nerve cord that runs ventrally through the thorax and abdomen. (b) Malphlglan tubules Striated muscles are present near articulatory joints. Answer: (ii) Where is It found In human body? Why is cockroach called an omnivorous animal? Dissection of Salivary Apparatus 3. What are anal styles? How are they distributed in cockroach. Answer: Imagine this: You are just coming home from a long day of school, and the minute you step in the door, you set your backpack down on the ground. (iii) What is the position of ovaries in a cockroach? Provide a place for attachment of muscles and help in movement and locomotion. Distinguish between the followings. The head holds a bit of a nervous system while the rest is situated along the ventral (belly-side) part of its body. Question 11. (v) Where do you find Malpighian tubules? Periplaneta americana (Kolar 2005). I and III only. Name two proteins produced by fibroblasts. Why are striated muscles called Skeletal muscles? Male cockroach. The outer border of stipes bears long five jointed maxillary palp which is five jointed structure. Answer: Insect - Insect - Circulatory system: The circulatory system is an open one, with most of the body fluid, or hemolymph, occupying cavities of the body and its appendages. Insects certainly exhibit circadian cycles. (v) Hypopharynx: This is also known as lingua. How many cranial nerves does a frog have? Question 12. Common salivary receptacular duct opens at its base. Answer: Answer: II. Also learn about:- 1. There are nine segmental ganglia, of which three pairs are thoracic, six pairs in the abdomen i. e 1st five lie in the first five abdominal segments, the last is large & found farther behind. Write four functions of bones. Mention any two differences between male and female cockroaches. Found in the inner lining of bronchioles. E.g. Answer: Red blood cells and white blood cells are the cellular components of blood. You can Download Chapter 7 Structural Organisation in Animals Questions and Answers, 1st PUC Biology Question Bank with Answers, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations. Give reason. If the head of cockroach is cut off, it will still alive for as long as one week. Notify me of follow-up comments by email. Tendon. Neural adaptation is a change over time in the responsiveness of the sensory system to a constant stimulus. Septal nephridia, present on both sides of intersegmental septa of segment 15 to the last open into intestine. Write the scientific name of cockroach. This is one of the reasons why a headless roach can live for more than a week. (ii) How many spermathecae are found In earthworms? Answer: Circulating Fluid in Cockroach 3. Name two group of animal that show it. Each tubule is lined by glandular and ciliated cells. It is connected to two sub-pharyngeal ganglia lying below the pharynx. Although diverse, insects are quite similar in overall design, internally and externally. Respiration by lungs is called pulmonary respiration Reptiles, Mammals have that. Question 7. Ligament is not part of gland. Answer: 3. : Salivary glands secrete saliva into buccal cavity. The foregut/stomodium consists of the mouth, pharynx, oesophagus, crop and gizzard. The muscle layers help in locomotion. Autonomic neural system transmits impulses from CNS to involuntary organs and smooth muscles. The midgut/mesenteron is a short narrow tube lined by glandular epithelium. Blood. Sub oesophageal ganglia:- are a pair of ganglia the oesophagus. (i) Give the common name of Periplaneta Americana. Answer: d – (ii) The body wall of earthworm is covered externally by a thin noncellular cuticle below which is the epidermis, two muscle layers and an innermost coelonic epithelium. (c) The body wall of earthworm The jaws of cockroach are called mandibles. I and II only. Central Nervous System of Cockroach: The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord. Answer: (a) Ureters in frog Circum oesophageal Connectives:-These are thick ends of nervous tissue arising from the base of the brain and called commissures. Question 10. The escape response due to air currents on the anal cerci is well studied. Dissection of Reproductive System. (ii) How many types of nephridia are found in earthworm based on their location? With the help of a neat labelled diagram Explain the nervous system of cockroach. Brain is formed by the fusion of a pair of cerebral ganglia, it lies in the anterior and dorsal part of the third segment. : Areolar tissue, The cells and fibres are compactly arranged. The network of neurons acts as a central pattern generator.It is a model system for motor pattern generation because of the small number of cells, which are comparatively large and can be reliably identified. Cardiac motor system is cross-hatched and neurosecretory system is dotted. Blatta Orentalis. Answer: Answer: 06, 07, 08, Koppala, Tumkur. To cloaca thorax and eight pairs in the head mouth is situated below! Ligament is not called a true segment as nervous system of cockroach diagram does in our skin and irregular... In functions like forming a diffusion boundary midgut consists of the body wall subject of. This article we will discuss about the structure and function of nephridia are in. 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