Biology Practical Archives

दुई दलीय बिरुवाको डाँठको क्रस सेक्सनको अस्थायी स्लाइड तयार गरी विभिन्न वनस्पति तन्तुहरूको अवलोकन गर्ने।

उद्देश्य दुई दलीय बिरुवाको डाँठको चाना (T.S.) को अस्थायी स्लाइड तयार गरी सूक्ष्मदर्शकको सहायताले विभिन्न वनस्पति तन्तुहरू, जस्तै परेन्काइमा, कोलेन्काइमा, स्क्लेरेन्काइमा, जाइलम र फ्लोएम आदिको अवलोकन तथा पहिचान गर्नु। आवश्यक सामग्री दुई दलीय बिरुवाको नरम डाँठ, धारिलो ब्लेड, सूक्ष्मदर्शक, स्लाइड, कभर स्लिप, ड्रपर, सुई/ब्रस, ग्लिसिरिन, पानी, सेफ्रानिन वा आयोडिन जस्ता रङद्रव्य, टिस्यु पेपर/ब्लटिङ पेपर सिद्धान्त […]

दुई दलीय बिरुवाको डाँठको क्रस सेक्सनको अस्थायी स्लाइड तयार गरी विभिन्न वनस्पति तन्तुहरूको अवलोकन गर्ने। Read More »

TO PREPARE TEMPORARY SLIDE OF ONION CELL FROM EPIDERMAL PEEL OF ONION BULB

OBJECTIVES MATERIALS REQUIRED Fresh onion bulb, Safranin, Dropper, Glycerol, No. 0 painting round tip brush, forceps, needle, blade, scissor, wash bottle, petri dish, watch glass, cover glass, slide, compound microscope . THEORY Onion cells are commonly used for microscopic studies because they have large and easily observable cells. The onion cell has a rectangular shape

TO PREPARE TEMPORARY SLIDE OF ONION CELL FROM EPIDERMAL PEEL OF ONION BULB Read More »

TO PREPARE TEMPORARY SLIDE OF STOMATA FROM VENTRAL PEEL OF DICOT LEAF

Leave a Comment / Biology Practical, SCIENCE PRACTICAL / Sugam

OBJECTIVES MATERIALS REQUIRED Fresh leaf of Senna tora (or Bidens pilosa /Tradescantia /Celosia cristata/ Dioscorea bulbifera) or other soft dicot leaf, Safranin, Dropper, Glycerol, No. 0 painting round tip brush, forceps, needle, blade, scissor, wash bottle, petri dish, watch glass, cover glass, slide, compound microscope . THEORY Stomata are specialized structures found on the ventral

TO PREPARE TEMPORARY SLIDE OF STOMATA FROM VENTRAL PEEL OF DICOT LEAF Read More »

TO DEMONSTRATE THAT GREEN LEAF CONTAIN STARCH

Leave a Comment / Biology Practical, SCIENCE PRACTICAL / Sugam

MATERIAL REQUIRED Iodine Solution (Potassium Iodide), Ethanol, Beaker, Green Leaf of Sunny Place, Bunsen burner, Tripod stand with wire gauze. THEORY The process of preparation of food(Glucose/Starch) by green plant by using water and carbon dioxide in presence of sunlight absorbed by chlorophyll is called photosynthesis. The leaf is the chief parts of plant which

TO DEMONSTRATE THAT GREEN LEAF CONTAIN STARCH Read More »

TO DEMONSTRATE THAT OXYGEN IS EVOLVED DURING PHOTOSYNTHESIS.

Leave a Comment / Biology Practical, SCIENCE PRACTICAL / Sugam

MATERIAL REQUIRED Beaker, short stem funnel, test tube, spirogyra or hydrilla plant, sodium bicarbonate. THEORY The process in which green plant prepare their food in their body by using carbon dioxide and water in presence of sunlight absorbed by chlorophyll called photosynthesis. Water + Carbondioxide ➡ Glucose + Oxygen 6H2O + 6CO2 ➡ C6H12O6 +6O2↑

TO DEMONSTRATE THAT OXYGEN IS EVOLVED DURING PHOTOSYNTHESIS. Read More »