Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

In a dicot pot herb, vaseline/vegetable oil was applied on the upper surface of one leaf (Experimental leaf 1) and on the lower surface of another leaf (Experimental leaf 2). Vaseline/Vegetable oil was not applied to the control leaf. The plant was deliberately not watered for several days. Which leaf will dry up last?
Three statements are followed by four conclusions numbered I, II, III and IV. You have to consider these statements to be true, even if they seem to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: 1. No plant is a flower. 2. No flower is a leaf. 3. Some plants are leaf. Conclusions: I. No leaf is a plant. II. No leaf is a flower. III. Some flowers are plants. IV. All leaf are plants.
Consider the following statements in respect of effect of air pollutants on vegetation: 1. Necrosis refers to killing of tissue 2. Chlorosis refers to loss or reduction of green plant pigment 3. Leaf abscission refers to the dropping of leaves 4. Leaf epinasty refers to a downward curvature of a leaf due to a higher rate of growth on the upper surface Which of the above statements are correct?
A teacher of Class VII demonstrates the following activity in the class: “A leaf is put in a test tube and spirit is poured over it. Then the test tube is put in a beaker half-filled with water and heated till the leaf is discoloured. The leaf is then taken out and a few drops of iodine are put on it. The leaf turns blue-black in colour.” After this activity, the teacher gives some questions for the assessment of various indicators of learning. Which of the following would assess ‘analysis’?
A teacher puts a leaf in a test tube and puts sprit (alcohol) in it. Now he heats the test tube till all the green colour comes out. Then he takes out the leaf and pour some iodine solution on it.  The students write the following statements in their notebooks. A) The leaf turns blue black in colour  B) The leaf contains starch  Which of the following statements is correct. 
In mouse agouti locus is hypostatic to pigment development locus. If C is for pigment development, and A is for agouti, and recessive alleles in agouti locus gives black colour and recessive in pigment locus gives white colour, what will be the phenotype of A/- c/c and a/a c/c.
The Rf value of a pigment is the ratio of the distance traveled by a pigment to the distance traveled by the solvent. Which pigment has the greatest Rf value?
The use of energy from sunlight by plants doing photosynthesis is the basis of life on earth. Which of the following statement is correct for photosynthesis? 1. chlorophyll (green pigment of the leaf), light, and CO2 are required for photosynthesis to occur. 2. photosynthesis occurs only in the green parts of the leaves in the presence of light.  3. chlorophyll is the chief pigment associated with photosynthesis.
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. At the end of the experiment, when the leaf was tested for starch with iodine, the star-shaped figure in the leaf was found to be:
Shaurya went for a trekking trip. During the trek he accidently placed his hand on the bush. He felt the sting and his hand started itching. The instructor immediately took a leaf of one of the plants, crushed it and rubbed it on the affected area. What could be the nature of the chemical which caused sting and nature of the leaf respectively?  Nature of chemical which cause sting Nature of juice in the leaf