Cockroach and Frog Anatomy PDF

# Level-l (For Board & Competitive Exams) ## Structural Organisation in Animals (Animal Morphology) ### Contents - Introduction - Frog - Morphology - Habits - Locomotion - Feeding - Hibernation and Aestivation - Mimicry - Se...

# Level-l (For Board & Competitive Exams) ## Structural Organisation in Animals (Animal Morphology) ### Contents - Introduction - Frog - Morphology - Habits - Locomotion - Feeding - Hibernation and Aestivation - Mimicry - Sexual Dimorphism - Morphology - Anatomy - Digestive System - Respiratory System - Blood Vascular System - Excretory System - Nervous System - Reproductive System - Importance to Mankind - Cockroach - External Morphology - Shape, Size and Colour - Exoskeleton - Division of body - Head - Compound eyes - Antennae - Mouth parts - Thorax - Fore wings (Mesothoracic wings) - Hind wings (Metathoracic wings) - Abdomen - Anal cerci - Anal styles (male only) - Gonapophyses (male and female) - Anatomy - Digestive System - Foregut or stomodaeum - Midgut or mesenteron - Hindgut or proctodaeum - Circulatory System - Blood or haemolymph - Haemocoel - Heart - Anterior aorta - Respiratory System - Spiracles - A network of trachea and tracheoles - Excretory System - Malpighian tubules - Fat body - Nephrocytes - Uricose glands - Nervous System - Sensory Organs - Reproductive System - Male reproductive system - Female reproductive system - Fertilisation and Development - Try Yourself # Exercise ## True or False 1. The alimentary canal of cockroach is a straight tube. 2. In frog, hepatic portal vein joins the posterior vena cava. 3. In frog, right atrium receives deoxygenated blood from lungs. 4. The blood vascular system of frog consists of a four-chambered heart. 5. The digestive system of frog is short because it is a carnivore. 6. The cockroach is a dioecious animal. 7. In male cockroach, the testes are attached to the dorsal side of the alimentary canal. 8. Malpighian tubules are excretory organs of frog. 9. In the central nervous system, the brain of frog has 10 pairs of cranial nerves. 10. The development of _Periplaneta americana_ is called paurometabolous. ## Choose the correct answer 1. Which of the following structures is present only in male cockroach? * a. Anal cerci, pair of jointed filamentous structure which arise from 10th segment * b. A pair of short thread like anal styles * c. Arthrodial membrane * d. Chitinous exoskeleton 2. Which of the following is a common example of cockroach? * a. _Blatta orientalis_ * b. _Pheretima posthuma_ * c. _Periplaneta americana_ * d. _Bombyx mori_ 3. The excretion in _Rana tigrina_ occurs through * a. Ammonia * b. Urea * c. Uric acid * d. All of these 4. The mode of respiration in tadpoles is * a. Pulmonary * b. Branchial * c. Buccopharyngeal * d. Cutaneous 5. The correct sequence of the organs in the alimentary canal of cockroach is * a. Mouth →crop→pharynx→oesophagus→gizzard * b. Mouth→pharynx→oesophagus→crop→gizzard * c. Mouth→oesophagus→pharynx→crop→gizzard * d. Mouth→crop→oesophagus→pharynx→gizzard 6. Blood vascular system of cockroach is * a. Open type * b. Closed type 7. The correct sequence of the organs in the excretory system of cockroach is * a. Uricose glands →nephrocytes→Malpighian tubules→fat body * b. Malpighian tubules→fat body→nephrocytes→Uricose glands * c. fat body→Malpighian tubules→nephrocytes→Uricose glands * d. nephrocytes→Malpighian tubules→fat body→Uricose glands 8. In cockroach, the heart is * a. 4 chambered * b. 3 chambered * c. 2 chambered * d. 13 chambered 9. The head region of cockroach bears * a. Two simple eyes * b. A pair of antennae * c. A pair of compound eyes * d. Both (b) and (c) 10. The functional units of kidneys in frog are * a. Malpighian tubules * b. Bowman’s capsule * c. Nephrons * d .Glomerulus 11. The external genitalia in both male and female cockroach are called * a. Phallic gland * b. Genital pouch * c. Collaterial gland * d. Gonapophyses 12. The body cavity of cockroach is called * a. coelome * b. haemocoel 13. A thin transparent membrane covering the eye of frog is known as * a. Nictitating membrane * b. Eyelids * c. Tympanum * d. Retina 14. The excretion in cockroach occurs through * a. Ammonia * b. Urea * c. Uric acid * d. All of these 15. The common name of the insect _Periplaneta americana_ is * a. Silk moth * b. Cockroach * c. Grasshopper * d. Earthworm 16. The respiratory organs of cockroach are * a. Gills * b. Lungs * c. Trachea * d. Skin 17. The development of cockroach is * a. Holometabolous * b. Paurometabolous 18. How many pairs of spiracles are found in cockroach? * a. 10 pairs * b. 20 pairs * c. 15 pairs * d. 12 pairs 19. Select the correct option with respect to tadpoles. * a. Free-swimming aquatic larvae * b. Feed on planktons * c. Initially possess internal gills which are replaced by external gills later * d. Require thyroxine for metamorphosis 20. Select the incorrect option with respect to tadpoles. * a. Free-swimming aquatic larvae * b. Feed on planktons * c. Initially possess internal gills which are replaced by external gills later * d. Require thyroxine for metamorphosis ## Answer the following questions in brief 1. What is the odd one with respect to the excretory system of frog? 2. Name the excretory organs present in cockroach. 3. Write the scientific name of the common household cockroach. 4. What is the function of crop in cockroach? 5. What is the function of the gizzard of cockroach? 6. Name the mode of excretion in _Rana tigrina_. 7. What is amplexus? 8. What is the main difference between blood of frog and cockroach? 9. What is the importance of aestivation in frog?