General Science (Biology) Questions and Answers

1. Trunk of tree increases in grith due to cell division in which tissue? – Meristematic tissue 
2. Which tissue in cells have lost the capicity of cell division? – Permanent tissue 
3. Which scientist studied about wheat rust problem? – K. C. Mehta 
4. Most of the plants obtain nitrogen from the soil in which from? – Nitrates 
5. Which fungus is responsible for disease late blight of potato? – Phytophthora infestans 
6. Which is responsible for red rot of sugarcane? – Collectorichum falcatum 
7. Which stage of development of insect is most harmful for crop? – Caterpillar 
8. In India famous Bengal famine accurred in 1942 by which disease? – Leaf spot of rice 
9. Which factors are most responsible for disease in plant? – Fungi 
10. Which fungus is responsible for the tikka disease of groundnut? – Cercosplora personata 

17. What is the Study of pulse and arterial blood pressure called? – Sphygmology 
18. Which branch of biology deals with the study of processing and preservation of food? – Food technology 
19. What is the Study of the effects of toxic chemical substance on animal and plant? – Toxicology 
20. What is the Branch of science which deals with the study of skin of man? – Dermatology 
21. The release of which fish into wells helps in controlling the mosquitoes? – Gambusia fish 
22. Which animal lays eggs and does not produce young ones directly? – Echidna 
23. How many pair of heart is found in an earthworm? – Four 
24. Which substance found in blood which helps in cloting? – Fibrinogen 
25. Which worm reach into intestine of human by eating leaf? – Tape worm 
26. Which is the phylum that includes exclusively marine animal? – Echinodermata 
27. Which organs has its own wave of autonomic excitation? – Heart 
28. What is the short upper part of human intestine next to the stomach? – Duodenum 
29. A person feel fatigued due to depositon of which acid in their muscles? – Latic Acid 
30. In the retina of eye cells what is present for colour differentiation? – Cones 
31. Which gland is responsible for the secretion of insulin? – Pancrease 
32. What is considered as the easily digestable source of protein? – Soyabean 
33. What percentage of water found in blood plasma of human? – 91 to 92% 
34. Which blood vessel bringing blood into Bowman’s capsule? – Afferent arteriole 
35. Bu which antibodies are produced in the plasma of blood? – Lymphocytes 
36. Which enzyme take part in digestion of milk protein? – Rennin 
37. Which part of brain is centre of thirst hunger and sleep? – Hypothalmus 
38. Blood Coagualtion is prevented by which chemical when it flow through artery and vein? – Heparin 
39. Which organelles in the cell, other than nucleus contains DNA? – Mitochondria 
40. What is infolding from the inner membrane of mitochondria called? – Cristae 
41. In a living cell what is the site of ribosome formation? – Nucleolus 
42. What do both respiration and photosynthesis require? – Cytochromes 
43. In absence of ribosome in cell which function does not takes place? – Protein synthesis 
44. Deficiency of which vitamin, causes xerophthelmia? – Vitamin A 
45. Which antimicrobial drug is suitable for treatment of both tuberculosis and leprosy? – Rifampicin 
46. Insects that can transmit diseases to human are referred to as which name? – Vectors 
47. Pneumoconiosis affects the workers who work mainly in which industry? – Coal mining industry 
48. Lathyrism is caused by excessive consumption of which thing? – Khesari Dal 
49. Which part of blood carry out the function of body defence? – White blood cell 
50. Which disease is caused due to presence of excess arsenic in water? – Skin Cancer 
51. What is the transmission of characters from one generation to next? – Heredity 
52. Who got noble prize for artificial synthesis of DNA? – Kornberg 
53. What is the smallest part of DNA that undergoes recombination? – Recon 
54. By whom was Artificial gene synthesis first done in laboratory? – Khurana 
55. By whom the concept of survival of the fittest as advanced? – Herbert Spencer 
56. From the evolutionary point of view, which is the most primitive animal? – Turtle 
57. Which was the Russian scientist who proposed the theory of origin of life? – Oparin 
58. Who published the book ‘Origin of species by natural selection in 1859’? – Darwin 
59. Which is most primitive ancestor of man ? – Australopithecus 
60. Which harmful element tobacoo exists in tobacoo ? – Nicotine 
61. What is abiotic component of ecosystem? – Water 
62. What is Study of inter relationship between living organism and their environment? – Ecology 
63. Epiphytes are plant which depend on other plants for which purpose? – Mechanical support 
64. What amount of energy transfered from one trophic level to next? – 10% 
65. Plant and animal living in a particular area, what is it called? – Community 
66. Reduced leaves and sunken stomata are the main feature of which thing? – Xerophytes 
67. What ratio of forest area needed for ecologycal balance in India? – 33.3% 
68. Ultimate environmental hazard to mankind, why? – Due to Nuclear pollution 
69. Sound become hazardous noise pollution at which level? – Above 80 dB 
70. Which energy do not have the problem of pollution? – Sun 
71. Which air pollutant affect the nervous system of man? – Lead 
72. By which is the Atmosphere of big metropolition cities is polluted most? – Automobile exhausts 
73. National Environmental Engineering research institute is situated in which city? – Nagpur 
74. Edward Jenner is related with which disease? – Small pox 
75. Which Scientist first explained about circulatory system? – William Harvey 
76. Who discovered Anopheles mosquito transmit malaria? – Ronal ross 
77. Who discovered the causal organism of the disease Anthrax? – Robert Koch 
78. Which Scientists has established the ‘Phylum Annelida’? – Lamark 
79. Which Biologist proposed the theory of Germ plasm? – Weisman 
80. For which is the southern blot technique used for the detection? – DNA 
81. For which is the northern blot technique used for the detection? – RNA 
82. What is the introduction of foreign genes for improving genotype? – Immunisation 
83. Which vitamin is transformed in golden rice ? – Vitamin A 
84. Human protein x –1 – antitrysin is used for which disease? – Emphysama 
85. Which type of cell has the ability to develop into any type of all ? – Stem cell 
86. What is the percentage of land area covered under forest according to Indian Forest policy? – 33% 
87. Which organisation is responsible for maintaing Red data book? – IUGN 
88. What is the main cause of extinction of species from tropics? – Deforestation 
89. What is the number of plant species estimated to be present in India? – 40,000 
90. Which group has the highest number of endangered species ? – Reptiles 
91. Silent valley having rare plant and animal is located in which state? – Kerala 
92. Which is the first national park established in India? – Corbet 93. Insectivorous plant generally grow in soil which is deficient in which gas? – Nitrogen 
94. What is one-way relationship where one species benefits at the expense of another is called? – Parasitism 
95. What is symbiotic relationship in which both species benefit’ is best described? – Mutualism 
96. Which of a species describes the tropic function it fills in its environment? – Niche 
97. What is the least influential in determining the distribution of terrestrial biomes? – Salinity 
98. What is the term for the maximum number of individuals that an area can support indefinitely? – Carrying capacity 
99. The massive hole in the ozone layer over the Antarctica was first discovered in which year? – 1985 
100. Which animals have a diet mainly consisting of bamboo? – Red pandas