Its matrix is called plasma cell types in blood. Question 2. Answer: Question 11. The maxillae help in holding and pushing the food into the mouth during swallowing. (Bangalore South, Bangalore Rural, Mandya, Mysore, Udupi 2005, D.Kanaada 2011) For example, the antennal nerve carries, . Answer: The nervous system of cockroach consists of a nerve ring and a ganglionated double ventral nerve cord. It consists of proximal submentum, middle mentum and distal bilobed prementum. Blood is a fluid connective tissue. (d) Adipose and blood tissue 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. Earthworms lack specialised breathing devices. Question 6. Answer: Mention the function of the following. Question 7. The insect brain is a fusion of three pairs of ganglia, each supplying nerves for specific functions. In females, the ureters and oviduct open separately in the cloaca. Sense organs include a pair of compound eyes, thigmoreceptors, chemoreceptors, auditory receptors and proprioreceptors. ... By seeing the cockroach, the sensory neurons in the nervous system that react from external stimuli from our own surroundings are then turned into internal impulses. Answer: Nervous system-Is involved in rapid transfer of short-term events and coordination of short-term events. Ligament is not part of gland. This is not called a true segment as it doesn’t contain typical organs of an annelida. Question 5. Answer: Chondrocytes. Unmyelinated nerve fibres are commonly found in spinal and cranial nerves Which of the above statements are true? Liver secretes bile into duodenum. What are mandibles? They are found in the lining of stomach and intestine and help in recreation and absorption. . Why is cockroach called an omnivorous animal? Name two groups of animal that have it. Neurosecretory cells-Neurons have electrical activity but involved in the production and release of neurosecretion that produces their effect as chemicals. A cockroach will respond to a tactile or wind stimulus directed at the body by rapidly turning away from the stimulus and running. (d) Maxilla; mandible; labrum; antenna Question 13. (g) Genitalia – (vii) Bone 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. Pharyngeal nephridia, present as three paired tufts in the 4th, 5th and 6th segments.Both are same structurally and functionally. What name is given to the cells of cartilage? Some insects, such as ants and cockroaches, are capable of learning the route, ). The supra-oesophageal ganglion or cerebral ganglion is a bilobed structure situated in the head in front of oesophagus, above the tentorium and almost between the bases of the antennae. Contractions keep blood circulating in one direction. Question 1. Striated muscles are present near articulatory joints. The thoracic ganglia give out nerves to the muscles of legs and wings and abdominal ganglia give out nerves to abdominal muscles, heart, spiracles & reproductive organs. Sarcomere. Since striated muscles are attached to the bones, they are called skeletal muscles. Question 19. 2005, Udupi.06, 08, D.K. They cover the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts. There are two types of epithelial tissues. occurs when a stimulus, irrelevant by itself, is made relevant by pairing it with something meaningful, . Their secretions are called hormones. Pharynx is narrow tubular part from where the oesophagus arises. (ii) How many types of nephridia are found in earthworm based on their location? (b) Malphlglan tubules Ganglia are segmentally arranged on the nerve cord and they give nerves to the organs of that segment. Question 4. The head holds a bit of a nervous system while the rest is situated along the ventral (belly-side) part of its body. How many cranial nerves does a frog have? Question 14. (a) Chondriocytes They carry urine from kidneys to cloaca. Answer: 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. (a) Ureters in frog These fibrous proteins provide strength, elasticity and flexibility to the tissue. What is meant by cutaneous respiration? Each tubule is lined by glandular and ciliated cells. The cells of this tissue are specialised to store fats. Name two group of animal that show it. Three ganglia lie in the thorax, and six in the abdomen. Question 8. The suboesophageal ganglion (SOG) and the segmental ganglia of the double ventral nerve-cord each send out pairs of, , in which case the lateral abdominal nerves send out nerves to innervate the, From the suboesophageal ganglion two connectives  or nerve cords run back along the ventral side (underside) of the, are contained in the ganglia, but the brain is normally required to switch them on and off. Cockroach. Spiracles are the openings of the respiratory system (trachea) in cockroach. Question 5. f – (vii) Mention any two differences between male and female cockroaches. The principle excretory organs of cockroach consists of malpighian tubules. What is tergum? (c) Ciliated epithelium Their role is to facilitate movement of organs like hands and feet. The excretory organs of Insects (Cockroach) are called Malphigian tubules. Four pairs. I and II only. Question 3 Write the scientific name of cockroach. Respiratory exchange occurs through moist body surface into their bloodstream. The larva of cockroach is called Nymph. circum – oesophageaÌ connectives and double ventral nerve cord (see figure). 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. Dissection of Salivary Apparatus 3. Answer: (This, , which resides in the protocerebrum and is both, This consists of two nerve centres - the main, or dorsal lobe. The excess of nutrients which are not used immediately are converted into fats and are stored in this tissue. Answer: What are spiracles? Periplaneta americana (Kolar 2005). Central Nervous System of Cockroach: The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord. Prostomium is the front most part of the earthworm. 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. What are the following and where do you find them In animal body. Question 3. This is one of the reasons why a headless roach can live for more than a week. It represents the tongue of the cockroach. Answer: In contrast, the ant starts all-over again, treating the maze as entirely, . Supra oesophageal ganglion:- are a pair of ganglia found in the head & form the brain. : 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. Answer: 2009) Describe the nervous system of an earth-worm. Where are blood cells manufactured in the bone? Question 14. 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They are S-shaped. Sub oesophageal ganglia:- are a pair of ganglia the oesophagus. Name the type of tissue that is most abundant in animal body. Question 1. (a) Prostomium and peristomium E.g. However, much of their nervous system activity takes place in nerve ganglia located throughout their bodies. What is pscudostratified epithelium? Question 12. Ten segments. Integumentary nephridia: attached to lining of the body wall of segment 3 to the last that open on the body surface. Answer: Question 7. It consists of ileum, colon, rectum. It leads into the buccal cavity. The digestive system mainly consists of the foregut, midgut and hindgut. In dense regular connective tissues, the collagen fibres are present in rows between many parallel bundles of fibres. Mechanism. (v) Where do you find Malphigian Tubules? 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, . Red blood cells and white blood cells are the cellular components of blood. Answer: What is their functions? Found in the inner lining of bronchioles. Answer: (ii) Where is It found In human body? (iii) How does it differ from adipose tissue? 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. Name the excretory organs of an earthworm. What is their shape? 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. (f) Osteocytes – (vi) Phallomere What do fibroblasts synthesize? Mention the function of the following. (v) Hypopharynx: This is also known as lingua. They show alternate dark and light bands called striations. Answer: Answer: Answer: diagram of a combine harvester diagram of a dragonfly diagram of a hammerhead shark diagram of a hydraulic system diagram of a computer system with label diagram of a crayfish diagram of a four stroke engine diagram of a cutlass. Name their secretion. Most of this food is ingested in the form of macromolecules and other complex substances (such as proteins, polysaccharides, fats, nucleic acids, etc.) 3. (e) Protonema; mesothorax; metathorax; coxa Answer: Describe various types of epithelial tissues with the help of labelled diagrams. (Belgaum 2004) Integration is the sorting and evaluation of information. (ii) Cuboidal: Composed of a single layer of cube-like cells. The terminal abdominal segment has anal styles and anal cerci. Neural adaptation is a change over time in the responsiveness of the sensory system to a constant stimulus. Adipose tissue is a type of loose connective tissue located mainly beneath the skin. Digestive and Excretory Systems . c – (y) Answer: Write two characteristic points about the structure of each of them. Subject Matter of Circulatory System in Cockroach: Cockroach being an insect possesses an open circulatory system. Question 12. Respiration by skin is known as cutaneous respiration. which must be broken down by catabolic reactions into smaller molecules (i.e. Answer: Name two proteins produced by fibroblasts. Nephridia is the excretory organ of the earth worm or pheretima. Answer: 1. Explain the nervous system of cockroach. Question 6. 2. Answer: Question 6. Smooth muscles are called involuntary muscles because their functioning cannot be controlled by our will. Provide a place for attachment of muscles and help in movement and locomotion. The Nervous System and the Cockroach It all started when I walked into my kitchen for a quick snack. (iii) Maxillae: A pair of maxillae are present beneath the mandibles and treated as additional jaws. Answer in one word or one line. Answer: The sensory cells, central nervous system component, and … Answer: Question 3 What is pulmonary respiration? List the mouthparts of Cockroach. The Peripheral Nervous System Peripheral nerves may be sensory or motory, but in insects are generally mixed. Answer: Answer: The hypopharynx lies on the floor of the buccal cavity. Question 2. It has sensory/receptor cells. They act as depot of calcium and phosphorous. Draw a neat diagram of digestive system of frog. Answer: ADVERTISEMENTS: In this article we will discuss about the Circulatory System in Cockroach:- 1. Simple epithelium is composed of one layer of cells while compound epithelium is composed of more than one layer of cells. Each leg consists of five joints. Supra oesophageal ganglion:- are a pair of ganglia found in the head & form the brain. 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. Name one specialised connective tissue. Insects enter a dormant or semi-dormant state, occurs in insects. Answer: Due to closed circulatory system, blood is confined to the heart and blood vessels. They are found in the walls of blood vessels and air sacs of lungs and are involved in functions like forming a diffusion boundary. Answer: Peripheral Nervous System: It consists of nerves, which are given off from the ganglia so as to innervate all the parts of the body. The foregut/stomodium consists of the mouth, pharynx, oesophagus, crop and gizzard. Answer: Endocrine system - Endocrine system - Class Insecta: Neurosecretory, neurohemal, and endocrine structures are all found in the insect endocrine system. Question 10. Circum oesophageal Connectives:-These are thick ends of nervous tissue arising from the base of the brain and called commissures. Malpighian tubules are the main excretory organs of the cockroach. Answer: Autonomic neural system transmits impulses from CNS to involuntary organs and smooth muscles. (B.North, Shimoga, Gulbarga, Belgaum, Chikmagalur 2004, D.Kannada, Hassan, Mysore, Kolar, M.Q.P. Mouth parts: On the ventral side of the head mouth is present. Question 12. Answer: Answer: Answer: How are they distributed in cockroach. The tritocerebrum also innervates the labrum. Mandibulate/ Chewing type. Crop is thin-walled sac, present in the whole of the thorax and serves as a reservoir for food storage. Peripheral Nervous System of Cockroach: The nerves originating from the nerve ring and ventral nerve cord to innervate different parts of the body constitute the peripheral nervous system. 1st PUC Biology Structural Organisation in Animals Five Marks Questions. e – (i) In nonmyelinated axons, the wrapping may be a simple sheath, , which folds tightly around the axon several times, except at exposed, http://www5.pbrc.hawaii.edu/~danh/InvertebrateMyelin/, http://casas-lab.irbi.univ-tours.fr/Circadian%20rhythms%20in%20insects.pdf. (i) Draw a labelled diagram of areolar connective tissue. Answer: The epithelium of proximal convoluted tubule of nephron in the kidney has microvilli. Draw a labelled diagram of the reproductive organs of an earthworm. Antenna is not a masticating part of cockroach. How does a frog take in water? It is a cylindrical and tubular structure present above the labium between maxillae. Free surface may have microvilli. Ten segments. What are the cellular components of blood? Answer: Differentiate between loose connective tissue and dense connective tissue. Answer: They produce blood cells and haemoglobin which is dissolved in blood plasma. These are thought to function as higher centres, receives inputs from the mushroom bodies and integrates, which send their axons to the pair of corpora cardiaca (see the, Another function associated with the protocerebrum is time-keeping. The Stomatogastric Nervous System (STNS) is a commonly studied neural network composed of several ganglia in arthropods that controls the motion of the gut and foregut. This tissue is present in the skin. Answer: Answer: Ten pairs. Septal nephridia: present on both sides of intersegmental septa of segment 15 to the last that open into intestine. Answer: Question 11. If the head of cockroach is cut off, it will still alive for as long as one week. (a) Ureters In frog The outer border of stipes bears long five jointed maxillary palp which is five jointed structure. Question 24. how to draw respiratory system of cockroach. Resulting in reactions like this one. A double ventral nerve cord runs up to the last segment. Answer: (a) Simple epithelium: Composed of a single layer of cells and functions as a lining for body cavities, ducts and tubes. Question 5. Answer: Answer: Question 21. If the columnar or cuboidal cells bear cilia on their free surface they are called ciliated epithelium. Answer: In a cockroach, the nervous system is spread throughout the body. Write four functions of bones. Question 13. Draw a labelled diagram of alimentary canal of a cockroach. 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. The first sting targets the first thoracic ganglion, part of the central nervous system. (iv) How many segments are present in the abdomen of cockroach? 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. I. Somatic neural system relays impulses from CNS to skeletal muscles. Tendons, which attach skeletal muscles to bones and ligaments which attach one bone to another are examples of this tissue. It can be killed successfully by drowning in water. (i) Labrum: This is also known as upper lip. Question 11. Answer: Midgut- It is also known as mesenteron or ventriculus. Question 4. Answer: (c) Dense regular and dense irregular connective tissues They give off several nerves to the mouth parts. It synthesises, stores and metabolises fat. Excretion is performed by un malphigian tubules in cockroaches. Answer: Their function is to move particle or mucus in a specific direction over the epithelium. If a, . The system is poor­ly developed and consists of following organs: … (b) Compound epithelium: consists of two or more cell layers and has protective function as it does in our skin. The Nervous System and a Cockroach By: Cassidy Widlowski. What are the three types of muscle tissue? Draw a neat labelled diagram of the digestive system of cockroach. Question 8. Question 4. Many of the nerves of the peripheral nervous system or pns branch out from the spinal cord and travel to various Mark the odd one in each series: (a) Areolar tissue; blood; neuron; tendon g – (vi). : Salivary glands secrete saliva into buccal cavity. This is commonly found in ducts of glands and tubular parts of nephrons in kidneys and its main functions are secretion and absorption. Fat bodies and nephrocytes are subsidiary organs of excretion. This paralyzes the front legs of the cockroach. Why are smooth muscles called Involuntary muscles? In the locust, the HG sends out one pair of outer oesophageal nerves (and one pair of inner. Question 22. Anal styles are unsegmented hair like out-growths arising from the end of the abdomen in male cockroach. They are the excretory organs of a cockroach. Periplaneta Americana Answer: I and III only. Contrary to popular perception, their heads also house their brains. The structure and function of the deuterocerebrum in insects. A pair of ovaries extend between 4th and 6th segments. (c) Septal nephrldla – (iii) Skin Collagen and elastin fibres. They have toothed inner edge helps in biting the food materials into small pieces. Functional diagram of the synthetic nervous system used for one leg. The midgut/mesenteron is a short narrow tube lined by glandular epithelium. The glands which have ducts to pour their secretions directly into the cloaca again, the... 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Phenomenon related to learning - sensory habituation body wall a functional diagram Areolar. Of Spiracles of which two pairs are located in human body one immediately the! Cuboidal cells bear cilia on their free surface they are found lying in...