XI Biology First Unit Test Exam Model Ans. Paper

Excellence in all spheres RC Patel Junior College Shirpur First unit test 2017-18 marks 25 subject biology Section - A Que. Multiple choice questions(3) 1. b) Taxonomy 2. b) Pneumatic bone 3. a) A.P.de Candole Section - B Que. Very short answer questions. (4) 4) H1 N1 5) Arthropoda 6) Protista 7) Bilateral symmetry Section - C Que. Short answer questions. (8) 8) "Bat" is a flying mammal Reason - i) Bats are warm blooded ii) Bats nurse their babies with milk III) Bats have fur OR 8) Phylum Echinodermata includes spiny skinned animals. Reason - i) Radial symmetry ii) Presence of water vascular system iii) Body covered with Spines for Protection. 9) Categories in correct sequence order family genus species 10) Fig. Agaricus shows Pileus and Stipe 11) Coelom Definition - The cavity presence between body wall and alimentary canal form by splitting of mesoderm. Sanguivorous Annelid is Leech. Section - D Que. Long answer questions. (10) 12) classification definition it is the arrangement of organisms into categories according to a systematic plan this term was given by a p d candle need of classification 18 to explain unity in diversity of organisms classification places in organisms among these those groups which have common characteristics 3 it gives specific and scientific names which are accepted universally for it reveals the relationship among various groups of organisms OR 12) lichens definition they are formed by close Association of two different organisms of which is an alga alga components phycobiont and other is fungal component mycobiont economic importance of lichens lichens 1 as food - lichens have like a name which is like carbohydrate example Lecanora esculenta . Parmelia is used in making chocolate pastries and curry powder 2.as fodder - species of Cladonia Parmelia Evernia are used as fodder for cattle 3 AS medicines - 4. In industries - a.Antibiotic is Usnic acid obtained from Usnia and cladonia be in respiratory disease like TV Labo labari are used epilepsy Parmelia is useful is useful in urinary diseases hydrophobia - Peltigera is useful 13) General Characters of Phylum Arthropoda Arthropods are metameric segmented, bilaterally symmetrical having jointed appendages triploblastic. Body Covered by exoskeleton of chitin. Body divisible into head Thorax and abdomen. True body cavity or Coelom filled with blood it is called Haemocoel. Circulatory system open type. Complete digestive system. Respiration by gills,trachea,book lungs,book gills. Excretion by malpighian tubules. Nervous system is ganglionated type. Sexes are usually separated. Fertilization internal. In some arthropods like Honey Bee shows parthenogenesis (Development without fertilization). Some animals are economically important such as honey bee for their honey and wax. Slkworm for silk.Prawns,Crabs and lobsters for food Some Vectors are harmful and transmitted diseases eg.Mosquito and Cockroach. Ex. OR 13) Symmetry- The Definite arrangement of organs and body parts of the animal is called symmetry. Types of symmetry - 1) Asymmetry - the animal cannot be divided into similar parts amoeba sponges 2) Radial symmetry - the animal can be divided into many similar parts when device is across the plane passing through the raiders starfish jellyfish Hydra 3) Bilateral symmetry - If you cut the animal then that are divided into two equal halves. Example-Butterfly,Man,Fish.