Aim To identify the different parts of an embryo of a dicot seed (pea, gram or red kidneybean). Materials Required Seeds of bengal gram/red kidney bean, forceps, cloth, magnifying glass, petridish, water. Theory Procedure Soak a few bean seeds and keep them overnight. Drain the excess water. Cover the seeds with a moist cloth and […]
Aim To study homology and analogy with the help of models/charts of animals and models specimens of plants. Material Required Plant specimens such as Bougainvillea, cucurbits, potato and sweet potato. Animal models like bird, butterfly, forelimb of frog. Theory Homologous organs: The organs which perform different functions in different species but have similar basic structure […]
Aim To study (a) binary fission in Amoeba, and (b) budding in yeast with the help of prepared slides. Materials Required Compound microscope, permanent slides of binary fission in Amoeba and budding in yeast. Theory Binary Fission – This is a type of asexual reproduction which takes place in Amoeba. In this type of reproduction, […]
Aim To show experimentally that carbon dioxide is given out during respiration. Materials Required Conical flask, U-shaped delivery tube (tube bent twice at right angles), cotton wool or moist blotting paper, water, thread, beaker, test tube, rubber cork with one hole, 20% freshly prepared KOH sokution, vaseline, soaked gram seeds. Theory Respiration is a biochemical […]
Aim To show experimentally that light is necessary for photosynthesis. Materials Required A potted plant, black paper strips or Gangong’s light screen, clips or cellotape, alcohol, iodine solution, water bath, beaker, burner, water, petri dish, dropper. Theory Light is one of the requirements for photosynthesis. When a part of the leaf is covered from both […]
Aim To prepare a temporary mount of a leaf peel to show stomata. Materials Required Leaf of Tradsscantia or periwinkle or balsam, slide, coverslip, forceps, needles, cotton cloth, brush, blotting paper, watch glass, blade, dropper, glycerine, safranin and compound microscope. Theory Stomata (singular: stoma) are tiny pores present on the surface of the leaves. Through […]