10 th grade biology

Food material Adulterant Cereals such as wheat, rice Mud,grit,soapstone Dal Kesari dal,metanil yellow(a dye) Haldi(turmeric)powder lead chromate Dhania powder Powdered cowdung or horsedung, starch Black pepper Dried papaya seeds Chilli powder Saw dust, brick powder ..

Classification of food - On the basis of nutrients food can be classified into seven different groups: Carbohydrates Proteins Fats Vitamins Minerals Roughage Water Table 3. Composition of some common foods Food Carbohydrate Fat Protein Bread (Chapathi) Rice(cooked) Banana Apple Egg Milk Butter Meat..

fig. 10.20 - Examples of Echinodermata The phylum is divided into five classes. Class Nature of the disc Nature of the arm Examples Asteroidea Compressed along the oro-aboral axis Five, continuous with the disc Asteria (starfish) Ophiuroidea Compressed along the oro-aboral axis Five, long..

Insects Diseases Rice 10% 15% Wheat 5% 15% Jowar 12% 18% Bajra 5% 8% Cowpea 3% 15% green gram 2% 14% Black gram 2% 11% Soyabean 3% 9% Pesticides, in general, make a class of chemicals used to control pests, which include insects, fungi..

fig. 10.9 - Examples of PlatyhelminthesThe phylum is divided into three classes Characteristics Class Turbellaria Class termatoda Class Cestoda habit and habitat free living aquatic Ecto or endoparasites Endoparasites Digestive system Present Present Absent Examples Planaria Fasciola (Liv..

Plants often get infested with disease causing pathogens. The entire crop can be destroyed if they are not controlled in time. Pathogens are transmitted by seed and soil water air Seed soil and water borne diseases mostly attack roots and plant stem. Air borne diseases attack all aerial ..

fig. 10.5 - Some Common Sponges The phylum is divided into three classes. Characteristics Class Calcarea Class Hexactinellida Class Demospongia Habitat Marine Marine Marine or fresh water Spicules Made up of calcium carbonate Made up of Silica Made up of spongin fibers or absent Examples ..

fig. 10.5 - Some Common Sponges The phylum is divided into three classes. Characteristics Class Calcarea Class Hexactinellida Class Demospongia Habitat Marine Marine Marine or fresh water Spicules Made up of calcium carbonate Made up of Silica Made up of spongin fibers or absent Examples ..

fig. 10.13 - Examples of Annelida The phylum is divided into four classes Characteristics Class Polychaeta Class Oligochaeta Class Hirudinea Class Archi annelida Habit and habitat Free living marine Free living forms found in most soil Fresh water forms Temporary ectoparasites Marine form..

="left">Gill slits in adult multiplied to form large filter-feeding pharynx. Larva in ascidian tadpole possesses the following features: notochord, pharyngeal slits, dorsal tubular nerve cord, segmental myotomes, post-anal tail. e.g,Ciona intest/ne/is Fish-like animals showing all recognisable chor..