Quiznetik
Biology (GK) | Set 17
1. Which of the following statements about phloem transport is correct?
A. phloem transport occurs unidirectionally
B. gravity influences phloem transport
C. Ca+ is the most abundantcation in phloem sap
D. sugar is transported in phloem as nonreducing sugar
Correct : D. sugar is transported in phloem as nonreducing sugar
2. What causes the mottling of the dental enamel?
A. High levels of chlorine in water
B. High levels of nitrate in the water
C. High levels of fluorides in the water
D. High levels of calcium in the water
Correct : C. High levels of fluorides in the water
3. Intensive cultivation refers to
A. production with intensive use of labour
B. production with intensive use of fertilizer
C. raising production by intensive use of existing land
D. raising production by large scale use of imported inputs
Correct : C. raising production by intensive use of existing land
4. Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect?
A. It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy.
B. The process occurs at a temperature above 430°C at atmospheric pressure.
C. The process occurs under high pressure at temperature above 430° C.
D. It is a thermo chemical decomposition of organic waste
Correct : B. The process occurs at a temperature above 430°C at atmospheric pressure.
5. In bio fortification technique plant breeders use breeding to overcome
A. Loss due to insect pests
B. Decrease in food production
C. Deficiencies of micronutrients and vitamins
D. Loss due to plant diseases
Correct : C. Deficiencies of micronutrients and vitamins
6. Rotation of crops is essential
A. For increasing the quantity of minerals.
B. For decreasing the quantity of proteins.
C. For getting different kinds of crops.
D. For increasing fertility of the soil.
Correct : D. For increasing fertility of the soil.
7. What do you understand by the term Dark Fermentation'?
A. It is a method to dispose nu-clear wastes.
B. It is a method to produce methane from organic wastes.
C. It is a method to reduce COD in the atmosphere.
D. It is a method to produce Hydrogen as a fuel from waste water.
Correct : D. It is a method to produce Hydrogen as a fuel from waste water.
8. Which of the following listed is not a feature of organic farming?
A. The non-use of chemical fertilizers and pesticides
B. Soil is nurtured for furture use by maintaining micro-or-danisms tin
C. Use of synthetic fertilizers
D. Very less energy consumption
Correct : C. Use of synthetic fertilizers
9. Which of the following series is true about energy flow in an ecosystem?
A. Producers Decomposers Consumers
B. Decomposers Consumers Producers
C. Producers --> Consumers --> Decomposers.
D. Consumers --> Producers Decomposers.
Correct : C. Producers --> Consumers --> Decomposers.
10. Rate of cooling depends on the
A. Temperature difference between the body and the surroundings
B. Nature of the radiating surface
C. Area of the radiating surface
D. All of these
Correct : D. All of these
11. What is the Kyoto Protocol?
A. It is an agreement among countries to take steps for reducing acid rain
B. It is an agreement among countries to take steps for planting trees to control pollution
C. It is an agreement among countries to start using nu-clear energy
D. It is an agreement among countries to take steps for reducing global warming
Correct : D. It is an agreement among countries to take steps for reducing global warming
12. For a healthy heart, one needs to take a balanced diet, adequate sleep and -
A. indulge in vigorous mental activities
B. play games like carrom, chess and cards
C. do right amount of physical exercise
D. do sedentary work
Correct : C. do right amount of physical exercise
13. Which of the following statements is true?
A. Dehusked cereals and pulses are more nutritious
B. Whole grain cereals and pulses are more nutritious
C. Processed cereal products are nutrient dense
D. Breakfast cereals are nutrient dense
Correct : B. Whole grain cereals and pulses are more nutritious
14. The main use of salt in the diet is to -
A. increase the solubility of the food particles in water.
B. produce in small amounts the hydrochloric acid required for the digestion of food
C. ease the process of cooking
D. make the taste of the food better
Correct : B. produce in small amounts the hydrochloric acid required for the digestion of food
15. Which of the following correctly explains the phenomenon of "Test Tube Bally"?
A. When every process of embryo formation is in the test tube.
B. When the embryo develops in a test tube.
C. When the fertilisation is external and development is internal.
D. When the fertilisation is internal and development is external.
Correct : C. When the fertilisation is external and development is internal.
16. Which of the following events occurred first?
A. DNA structure of genes was discovered by James D Watson and Francis Crick
B. Yuri Gagarin became the first man in space
C. World's first human heart transplant was performed by Dr. Christian Barnard
D. World's first test tube baby Louise Brown was born in U.K.
Correct : A. DNA structure of genes was discovered by James D Watson and Francis Crick
17. Identify the correct statement with respect to Biogas.
A. Mixture of gases from volcanoes
B. Gas produced from certain crude oil wells
C. Gas produced by incomplete combustion of biomass
D. Gas produced by fermentertian of biomass
Correct : D. Gas produced by fermentertian of biomass
18. Heart attack occurs due to –
A. Bacterial attack on the heart
B. Stopping of heart beat
C. Lack of supply of blood to the heart itself
D. Impairment of heart's working due to unknown reasons
Correct : C. Lack of supply of blood to the heart itself
19. 'Green House Effect' means -
A. cultivation of crops in green house to conserve heat
B. trapping of solar energy due to carbon dioxide gases
C. trapping of solar energy by earth upper surface
D. increase of heat due to atmospheric pollution
Correct : B. trapping of solar energy due to carbon dioxide gases
20. Fat present below the skin surface in our body acts as a barrier against –
A. loss of heat from the body
B. loss of essential body fluids
C. loss of salt from the body
D. entry of harmful micro-organisms from the environment
Correct : A. loss of heat from the body
21. Xylem fibres are made up of –
A. Scierenchyma cells with thin walls
B. Scierenchyma cells with thick walls
C. Parenchyma cells with thin walls
D. Scierenchyma cells with no obliteration in central lumen
Correct : B. Scierenchyma cells with thick walls
22. Which of the following item is not included in Environmental Auditing?
A. Pollution monitoring schemes
B. Scrutiny by the government agencies
C. Safety provisions for industrial workers
D. Storage of toxic chemicals
Correct : B. Scrutiny by the government agencies
23. Membrane lipids of chillsensitive plants contain -
A. low proportion of saturated fatty acids.
B. low proportion of unsaturated fatty acids.
C. equal proportion of saturated and unsaturated fatty acids.
D. high proportion of unsaturated fatty acids.
Correct : D. high proportion of unsaturated fatty acids.
24. Natural organic fertilizers are found to be better then chemical fertilizers because –
A. chemical fertilizers are less productive
B. organic fertilizers are more productive
C. organic fertilizers sustain soil productivity
D. chemical fertilizers are toxic
Correct : C. organic fertilizers sustain soil productivity
25. Select the High Yielding Varieties of seed-crops developed under Green Revolution in India.
A. Rice, Wheat, Pulses, Oil seeds and Sugarcane
B. Maize, Black-gram, Jowar, Coffee arid Tea
C. Rice, Wheat, Jowar, Bajra, and Maize
D. Wheat, Rice, Sugarcane, Pulses and Maize
Correct : A. Rice, Wheat, Pulses, Oil seeds and Sugarcane
26. Among the following sets of salient features, which set does not exclusively characterize mammals?
A. Presence of sweat, glands, hairs on skin and diphyoclonts
B. Presence of mammary glands, sweat glands and diaphragm
C. Presence of mammary' glands, sweat glands, and diaphragm
D. Presence of mammary glands, hairs on skin and diaphragm.
Correct : C. Presence of mammary' glands, sweat glands, and diaphragm
27. A person with 'AB' blood group is sometimes called a universal recipient because of the –
A. lack of antigen in his blood
B. lack of antibodies in his blood
C. lack of both antigens and antibodies in his blood
D. presence of antibodies in his blood
Correct : B. lack of antibodies in his blood
28. The duration 19-21 days refers to:
A. incubation period of hen's egg
B. average life-span of a red blood cell in humans
C. the period of menstrual cycle soon after menstruation, during which fertilisation is most likely to occur
D. period of completion of one schizogony cycle of malarial parasite inside a red blood cell
Correct : C. the period of menstrual cycle soon after menstruation, during which fertilisation is most likely to occur
29. 'Kyoto Protocol', an agreerne; signed by various =Indies, is associated with -
A. Clean Environment and Climate Change
B. Building common food stock to save human beings from any natural disaster
C. International Trade
D. Deep Sea 011 and Mineral Exploration
Correct : A. Clean Environment and Climate Change
30. Carbon monoxide poisoning can be cured by -
A. exposing the affected person to fresh oxygen.
B. eating butter.
C. drinking lemon-water.
D. consuming multi-vitamin tablet.
Correct : A. exposing the affected person to fresh oxygen.
31. The main function of insulin in the human body is –
A. to maintain blood pressure
B. to help in digestion of food
C. to control the level of sugar in the body
D. to check the level of iodine in the body
Correct : C. to control the level of sugar in the body
32. The DPT vaccine is given toyoung babies to protect them from –
A. diphtheria, polio and tetanus
B. diphtheria, pneumonia and tuberculosis
C. diphtheria, smallpox and tetanus
D. diphtheria, whooping cough and tetanus
Correct : D. diphtheria, whooping cough and tetanus
33. Which one of the following is not a benefit of saliva –
A. It facilitates swallowing
B. It increases RBCs in the body
C. It keeps the mouth and teeth clean
D. It aids speech by facilitating movements of lips and tongue
Correct : B. It increases RBCs in the body
34. The process of photosynthesis involves conversion of
A. chemical energy into radiant energy
B. chemical energy into mechanical energy
C. solar energy into chemical energy
D. mechanical energy into solar energy
Correct : C. solar energy into chemical energy
35. When a child is born, what happens to its blood circulation?
A. Its blood flows for the first time
B. Its blood reverses its flow through the heart
C. Its blood ceases to pass from one atrium to the other
D. Its blood carries wastes for the first time
Correct : D. Its blood carries wastes for the first time
36. Quarantine regulation is concerned with
A. growing of better varieties of plant
B. prevention of entry of diseased organism
C. spraying of insecticide over diseased plants
D. identification of diseased organism
Correct : B. prevention of entry of diseased organism
37. Which one of the following set belongs to the class Mammalia?
A. Lion, Hippopotamus, Penguin, Bat
B. Lion, Bat, Whale, Ostrich
C. Hippopotamus, Penguin, Whale, Kangaroo
D. Whale, Bat, Kangaroo, Hippopotamus
Correct : D. Whale, Bat, Kangaroo, Hippopotamus
38. Which one of the following is NOT a function of kidney -
A. Regulation of blood pH
B. Removal of metabolic wastes from the body
C. Production of antibodies
D. Regulation of osmotic pressures of the blood
Correct : C. Production of antibodies
39. Which is the effect of antigen in an ill person?
A. It increases the production of W.B.C.
B. It increases the production of antibiotics
C. It increases the production of antiserum against bacteria
D. It prevents the growth of bacteria
Correct : B. It increases the production of antibiotics
40. Which of the following is true?
A. DNA is the genetic material in most of the organism
B. RNA is the genetic material in most viruses and bacteria
C. DNA is the genetic material in all the viruses
D. RNA is the genetic material in all the viruses
Correct : A. DNA is the genetic material in most of the organism
41. Which of the following is incorrect?
A. AIDS is retroviral disease
B. AIDS is transmitted by ho*mo and hetero- sexual contact
C. AIDS was first recognised in USA in 1981
D. AIDS causes ono-genital warts
Correct : D. AIDS causes ono-genital warts
42. Mitosis is a type of cell division in which -
A. The chromosomes maintain their original number
B. The chromosome number is reduced to half
C. The Chromosome number is doubled
D. The chromosome number is reduced to one fourth
Correct : C. The Chromosome number is doubled
43. The danger signals are red while the eye is more sensitive to yellow because –
A. absorption in red is less than yellow and hence red is visible from a distance
B. scattering in yellow light is less than red
C. the wavelength of red light is more than yellow light
D. none of the above reasons
Correct : C. the wavelength of red light is more than yellow light
44. Hashish is obtained from aplant. From which part of the plant is it obtained?
A. Leaves
B. Stem
C. Exudate from leaves and female inflorescences.
D. Exudate from stem and male inflorescences.
Correct : C. Exudate from leaves and female inflorescences.
45. A test tube baby means :
A. a baby grown in a test tube.
B. embryo fertilised in uterus and developed in test tube.
C. embryo fertilised and developed in uterus.
D. fertilisation in vitro and then transplantation in the uterus.
Correct : D. fertilisation in vitro and then transplantation in the uterus.
46. Why radiologists do not take direct X- ray photographs of intestine?
A. Intestines are affected by direct exposure to X-rays
B. X-rays can not cross intestine
C. X-rays are not able to capture clear picture
D. Even short exposure of X-rays causes cancer in intestine
Correct : C. X-rays are not able to capture clear picture
47. What is an antibiotic?
A. A chemical compound produced by a living organism that inhibits the growth of other organisms
B. Acompound synthesised by a living organism that inhibits the growth of microbes
C. Asynthetic compound inhibiting the growth of other organisms
D. Asynthetic compound inhibiting the growth of bacteria
Correct : D. Asynthetic compound inhibiting the growth of bacteria
48. Triple vaccine is administered to a new born child to immunize it against -
A. whooping cough, tetanus and measles
B. whooping cough, tetanus and diphtheria
C. tetanus, diphtheria, measles and rubella
D. tetanus, diphtheria, small pox and rubella
Correct : B. whooping cough, tetanus and diphtheria
49. Antidiuretic hormone (ADH) -
A. inhibits the secretion of growth hormone by the pituitary
B. inhibits the rate of heart beat
C. causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules
D. causes an increase in the blood pressure
Correct : C. causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules
50. Exobiology deals with the study of -
A. external characters of living organisms
B. life on the surface of the earth
C. life in the outer layers of atmosphere
D. life in other planets and space
Correct : D. life in other planets and space
51. Heart attack occurs due to :
A. Bacterial attack on the heart
B. Stopping of heart beat
C. Lack of blood supply to the heart itself
D. Impairment of heart’s working due to unknown reasons
Correct : C. Lack of blood supply to the heart itself
52. What is an endoscope?
A. It is an optical instrument used to see inside the alimentary canal
B. It is a device which is fitted on the chest of the patient to regularize the irregular heart beats
C. It is an instrument used for examining ear disorders
D. It is an instrument for recording electrical signals produced by human muscles
Correct : A. It is an optical instrument used to see inside the alimentary canal
53. Some viruses have RNA but no DNA. This would indicate that –
A. these viruses cannot replicate
B. these viruses have no heritable information
C. RNA transmits the hereditary information in these viruses
D. their nucleic acids can be crystallised
Correct : B. these viruses have no heritable information
54. An antibiotic is -
A. achemical synthesized by a human cell against a microorganism
B. a chemical synthesised by amicro-organism against another micro-organisms
C. a substance produced by blood cells against bacteria
D. a substance produced by blood cells against infection.
Correct : B. a chemical synthesised by amicro-organism against another micro-organisms
55. Camel is a desert animal, that can live without water for many days, because -
A. it does not need water
B. water is formed in the body due to oxidation of fat
C. it has the water sac in the walls of the lumen of stomach
D. All of the above
Correct : D. All of the above
56. A clone is a colony of :
A. cells having different shapes
B. cells having similar shape
C. cells having similar genetic constitution
D. cells having different genetic constitutions
Correct : C. cells having similar genetic constitution
57. The age of a tree can be determined more or less accurately by -
A. counting the number of branches
B. measuring the height of the tree
C. measuring the diameter of the trunk
D. counting the number of rings in the trunk
Correct : D. counting the number of rings in the trunk
58. Which one of the following is true regarding plant cells and animal cells‘?
A. Plant cells contain chloroplast while animal cells do not
B. Plant cells are small while animal cells are large in size
C. Plant cells contain nucleus while animal cells do not
D. Plant cells and animal cells are similar in all respects
Correct : A. Plant cells contain chloroplast while animal cells do not
59. Which of the following is a perfect match?
A. Coronary attack - vascular dilation
B. Atherosclerosis - blockage of arteries
C. Hypertension - low blood pressure
D. Hypotension - heart attack
Correct : D. Hypotension - heart attack
60. In the case of test tube babies
A. egg is fertilized in the uterus.
B. embryo completes its development in a test tube.
C. embryo is placed in uterus after 2 months.
D. egg is fertilized outside mother's body.
Correct : C. embryo is placed in uterus after 2 months.
61. Which of the following is correct about cold blooded animals?
A. Their blood remains cold all the time
B. Their body temperature changes in accordance with the atmosphere
C. Their body temperature remains constant all the time
D. They kill all the animals they come across (SSC Combined Graduate Level Prelim Exam.
Correct : B. Their body temperature changes in accordance with the atmosphere