Related InterviewSolutions

• Given alongside is a sketch of a leaf partially covered with black paper and which is to be used in the experiment to show that light is compulsory for the process of photosynthesis. At the end of the experiment, which one of the leaf parts labelled I, II and III will become blue black when dipped in iodine solution? A. I onlyB. II onlyC. I and IIID. II and III
• A leaf of destarched healthy potted plant was covered by black paper strip as shown in Figure I, and kept in sunlight in the morning. In the evening, it was plucked off and tested for the presence of starch by using iodine solution. The observation is matched with the Figure No.:A. IIB. IIIC. IVD. V
• A portion of each of four destarched leaves of a plant was covered with paper strips of various kinds. The plant was exposed to sunlight for 5 hours. Thereafter, the strips were removed and the leaves tested for starch in the covered portion. Which one of the four leaves gave the starch test in the covered portion?A. that covered with black paper stripB. that covered with green paper stripC. that covered with white paper stripD. that covered with transparent paper strip
• A star-shaped figure was cut in the black paper strip used for covering the leaf of a destarched plant used for demonstrating that light is necessary for photosynthesis. As the end of the experiment when the leaf was tested for starch with iodine, the star-shaped figure on the leaf was found to be: A. colourlessB. green in colourC. brown in colourD. blue-black in colour
• In the experiment to show that `CO_(2)` is given out during respiration by germinating seeds, the student uses:A. Lime waterB. AlcoholC. KOH solutionD. Iodine solution
• Why is some KOH placed in a small test tube in the flask with germinating seeds in the experiment to demonstrate occurrence of respiration in germinating seeds?A. To provide oxygen required by the seeds for respiration.B. To absorb carbon dioxide and create partial vacuum in the flask.C. To absorb water from the seeds to make them dry.D. To make the air present in the flask alkaline.
• The most appropriate reason for taking germinating seeds in the experiment to show that carbon dioxide is produced during respiration, is:A. germinating seeds create high temperatureB. germinating seeds are easy to handleC. germinating seeds are living thingsD. germinating seeds are in dormant state
• Which one of the following is the correct set of three precautions for setting up the experiment to demonstrate that carbon dioxide is evolved during respiraition?A. Air tight set up, delivery tube dips in water in beaker, flask has seeds which have just germinated.B. Thread holding KOH test tube, air tight flask, delivery tube above surface of water in the beaker.C. Germinated seeds under water in the flask, experimental set up not air tight, delivery tube above water level.D. Delivery tube touching bottom of water, KOH test tube held by a thick wire, seeds covered by water.
• Bottle containing the undermentionel liquids were available in the laboratory. Which liquid did a student use for putting a drop on the slide before placing the coverslip while preparing the mount of leaf epidermal peel?A. waterB. SafraninC. GlycerineD. Iodine
• A student had drawn the diagram of stomata in a hurry, as shown alongside. He could not be given full marks as he: A. forgot to draw nuclei in guard cells and also to label the diagram.B. did not draw nuclei in guard cells and other cells.C. should have drawn nuclei and chloroplasts in guard cells and nuclei in all epidermal cells.D. did not label the stoma in its correct position.