Blood. Periplaneta americana (Kolar 2005). Answer: Draw a neat diagram of digestive system of frog. b – (iv) Answer: Answer: Question 14. Answer: In males, it also conducts the sperms. The hypopharynx lies on the floor of the buccal cavity. II and III only. Answer: how to draw respiratory system of cockroach. Answer: (i) What is the function of nephridia? Answer: Answer: Answer: Psudostratified Epithelium is the epithelial tissue made up of a single layer of columnar cells, but appears two layered because some cells are shorter than others and have their nuclei at different levels. 2. (a) Simple epithelium: Composed of a single layer of cells and functions as a lining for body cavities, ducts and tubes. It serves as a support framework for epithelium. Name the fluid connective tissue in our body. Sensory inputs have, Learning, Memory and Intelligence in Insects, Although the mushroom bodies of the brain have been shown to be involved in learning, ganglia other than the brain are, . Question 21. Question 4. Explain the mouth parts of Cockroach. An insect uses its digestive system to extract nutrients and other substances from the food it consumes. The nervous system of cockroach consists of the central and periphernal systems, The central nervous system is made of ganglia and nerve, cords, whereas the peripheral nervous system is made of nerves arising from the ganglia. : Tendon, It is a solid, rigid and strong connective tissue, It is a solid, semi-rigid and flexible connective tissue, Occur in clusters of 2 or  3 in each lacuna, Matrix is deposited with salts of calcium and phosphorous. Question 15. Cartilage is not part of blood. Answer: Answer: Connective tissue. It is a small flap like structure which covers the mouth dorsally. Pharyngeal nephridia: present as three paired tufts in the 4th, 5th and 6th segments. Answer: ROLE OF CARDIAC NEURONS IN THE COCKROACH HEARTBEAT 1267 1 A4 FIG. Name the type of connective tissue that serves as a support framework for epithelium. (ii) Cuboidal: Composed of a single layer of cube-like cells. 1. (iii) What is the position of ovaries in cockroach? Three pairs of nerves originate from the supra-oesophageal ganglion—optic, antennary and labrofrontal nerves. Smooth muscles are called involuntary muscles because their functioning cannot be controlled by our will. Answer: What is tergum? Where are blood cells manufactured in the bone? Answer: Question 9. What are the cellular components of blood? Answer: Also learn about:- 1. Answer: Cardiac muscle are present in the cells of heart only. Question 5. What Is a nymph? Integumentary nephridia: attached to lining of the body wall of segment 3 to the last that open on the body surface. Question 3 : Areolar tissue, The cells and fibres are compactly arranged. Answer: Answer: When an insect has just completed a task, learning is abolished if a new task is, Hard to say. suh-oesophageal ganglion. 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. Answer: Question 19. The oeophagus is narrow and connects the buccal cavity to the crop. Simple gland is composed of single-cell while compound gland is composed of multiple cells. 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. What are Malpighian tubules? Question 3. Answer: Respiration by skin is known as cutaneous respiration. For example, the antennal nerve carries many sensory fibres conveying inputs from the many antennal sensors to the brain, but it also contains some motor fibres carrying output signals to the muscles in the base of the antenna. Answer: Question 10. Three ganglia lie in the thorax, and six in the abdomen. Septal nephridia: present on both sides of intersegmental septa of segment 15 to the last that open into intestine. What is its matrix called? Question 10. The main function of blood is to transport gases, nutrients and waste products in the body. Tendon. Question 6. In addition to learning routes, insects can, a type of digger wasp, which brings back food to its developing young in the nest, the wasp. Question 3. Question 17. 3 types of nephridia. They produce blood cells and haemoglobin which is dissolved in blood plasma. Question 13. Ventral nerve end cord segmental ganglia:- The double ventral nerve cord arises from the base of the sub oesophageal ganglia, and runs to the end of the body. Tail like structure of a neuron. Answer: Describe various types of epithelial tissues with the help of labelled diagrams. Mechanism. Question 5. If a, . Epithelial tissues provide covering to the inner and outer lining of various organs. Circum oesophageal Connectives:-These are thick ends of nervous tissue arising from the base of the brain and called commissures. It is located in trachea and bronchi. Their nuclei are located at the base. Answer: Question 8. Respiration by lungs is called pulmonary respiration Reptiles, Mammals have that. Labrum, Mandible, hypopharynx, manillary palp (cardo, stipes, lacinia, galea) submentum, mentum, prementum, glossa, paraglossa, labial palp. c – (y) How are they distributed in cockroach. Respiratory exchange occurs through moist body surface into their bloodstream. The appendages surrounding the mouth which are helpful in feeding are called the mouth parts or trophi. These are: (i) Squamous: Made of a single thin layer of flattened cells with irregular boundaries. Question 12. Name the type of tissue that is most abundant in animal body. Name the functional contractile unit of the muscle. They carry urine from kidneys to cloaca. Male cockroach. 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. On the basis of structural modification of the cells, simple epithelium is further divided into three types. Each tubule is lined by glandular and ciliated cells. Question 23. circum – oesophageaÌ connectives and double ventral nerve cord (see figure). What are anal styles? I and II only. Subject Matter of Circulatory System in Cockroach: Cockroach being an insect possesses an open circulatory system. It consists of proximal submentum, middle mentum and distal bilobed prementum. Neuron is not a connective tissue. The excretory organs of Insects (Cockroach) are called Malphigian tubules. Cockroach. Answer: Functional diagram of the synthetic nervous system used for one leg. The nervous system has two major parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The jaws of cockroach are called mandibles. Question 10. Question 11. They act as depot of calcium and phosphorous. Frogs take in water through their skin. The junction between midgut and hindgut. (a) Simple epithelium and compound epithelium 06, 07, 08, Koppala, Tumkur. List the mouthparts of Cockroach. They are the excretory organs of a cockroach. (ii) How many types of nephridia are found in the earthworm, based on their location? Peripheral Nervous System: It consists of nerves, which are given off from the ganglia so as to innervate all the parts of the body. Question 4. Answer: Notify me of follow-up comments by email. The excess of nutrients which are not used immediately are converted into fats and are stored in this tissue. An isolated cockroach leg exhibits another phenomenon related to learning - sensory habituation. Answer: Name two groups of animal that have it. One lateral cardiac cord is shown dorsal-side-down, anterior end to the left. Circulating Fluid in Cockroach 3. 1. Answer: Answer: Question 25. (B’lore North 2004) These fibrous proteins provide strength, elasticity and flexibility to the tissue. Sense organs include a pair of compound eyes, thigmoreceptors, chemoreceptors, auditory receptors and proprioreceptors. What is meant by cutaneous respiration? 2. Resulting in reactions like this one. Answer: The structure and function of the deuterocerebrum in insects. Question 7. Sympathetic or Stomatogastric Visceral Nervous System: It consists of a frontal ganglion, which is situated on the dorasl side of the oesophagus in the head. Question 8. What is pscudostratified epithelium? Answer: Midgut- It is also known as mesenteron or ventriculus. Answer: Question 2. Dissection of Reproductive System. What are the three types of muscle tissue? Answer: Nephridia. Mention briefly about the circulatory system of earthworm Dissection of Nervous System 4. It can be killed successfully by drowning in water. Question 24. Smaller blood vessels supply the gut, nerve cord and the body wall. Where are they attached to the body? Dense irregular connective tissue has fibroblasts and many fibres that are oriented differently. Its matrix is called plasma cell types in blood. e – (i) Answer: Question 15. A cockroach will respond to a tactile or wind stimulus directed at the body by rapidly turning away from the stimulus and running. The hindgut/proctodaeum is a long tube like structure with 60 – 70 narrow thread like yellow structures called Malpighian tubules. Roaches' heads house their eyes, antennae and mouthparts. (ii) How many spermathecae are found In earthworms? Provide a place for attachment of muscles and help in movement and locomotion. Three types of nephridia are found. Cockroach feeds on all kinds of substances like leather, paper, cloth etc., hence called omnivorous. ‘The external body covering of the cock-roach is called Exoskeleton. 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