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Doctors Medicines MCQs Q&A

Consider the following statements and choose the correct answer:
1. In order to increase the photosynthetic efficiency leaf area index should be increased
2. To increase leaf area index plants should be with horizontal leaves
3. If the time of grain-growth is increased, the grain-yield will decrease
4. Photosynthetic efficiency can be increased by monitoring moisture stress, transpiration loss and light intensity

Consider the following statements and choose the correct answer:
1. In order to increase the photosynthetic efficiency leaf area index should be increased
2. To increase leaf area index plants should be with horizontal leaves
3. If the time of grain-growth is increased, the grain-yield will decrease
4. Photosynthetic efficiency can be increased by monitoring moisture stress, transpiration loss and light intensity Correct Answer 1 and 4 are true

Related Questions

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 and choose the correct answer:
1. Transpiration usually occurs during day-time whereas guttation takes place in night
2. In transpiration water comes out in the form of liquid, whereas in guttation the water is given off in the form of vapour
3. Transpiration water is pure but guttation water contains inorganic salts and sugars
4. Transpiration is a controlled phenomenon whereas guttation is an uncontrolled phenomenon
In the question below are given six statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: All Petrol are Gasoline. No petrol is Water. Some Water are Gas. Some Moisture are Gas. All Gasoline are Fire No Moisture is Fire Conclusions: I. Some Moisture are Gasoline. II. Some Water are Moisture. III. Some Gasoline are Gas. IV. Some Petrol are Moisture.
Which of the following statements about transpiration are correct? Statement 1: Low temperature increases the transpiration rate. Statement 2: Transpiration leads to water and vapor loss.
Consider the following statements and choose the correct answer:
1. Intense or strong light retards the growth of shoot
2. Shade plants are shorter and stockier than sun plants
3. Shade plants have dense covering of hairs while sun plants are less hairy
4. The stems of shade plants are taIler and more branched than that of sun plants
Consider the following statements and choose the correct answer:
1. Evaporation is a vital physiological process
2. Transpiration is restricted to living bodies only
3. Evaporation is as low loss of water molecules to the unsaturated atmosphere from the free exposed surface among living and non-living bodies
4. Transpiration is simply a loss of water molecules which do not involve any pressure
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?
Consider the following statements about Light year: 1. Light year is a unit for measurement of very large distances. 2. Light year is a unit for measurement of very large time intervals. 3. Light year is a unit for measurement of intensity of light. Which of the statements given above is/are correct?
Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.
The human eye is a complex part of the body that is used for seeing. Eyes enable people to perform daily tasks and to learn about the world that surrounds them. Sight, or vision, is a rapidly occurring process that involves continuous interaction between the eye, the nervous system, and the brain. When someone looks at an object, what he really sees is the light reflected from the object. This reflected light passes through the lens and falls on the retina of the eye. Here the light induces nerve impulses that travel through the optic nerve to the brain and then over other nerves to muscles and glands.
The eye is similar to a television camera. Both the eye and the television camera convert light energy to electrical energy. The eye converts light to nerve impulses that are interpreted by the brain as the sense perception called sight. A television camera converts light to electronic signals that are broadcast and transformed into light images in a television receiver. It is wonderful that human eyes blink an average of once every six seconds. This washes the eye with the salty secretion from the tear or lachrymal glands. Each tear gland is about the size and shape of an almond. These glands are situated behind the upper eyelid at the outer corner of the eye. After passing over the eye, the liquid from the gland is drained into the nose through the tear duct at the inner corner of the eye. The sense perception that the brain releases after the eye converts light to nerve impulses is known as
Choose the correct relation for a combination of two prisms to be achromatic. (Where for the first prism: μv = refractive index of the medium in violet light, μr = refractive index of the medium in red light A = angle of the prism; For the second prism: μ′v = refractive index of the medium in violet light, μ′r = refractive index of the medium in red light, A’ = angle of prism.)