biology mcqs
An extensive multiple-choice question test covering the diversity of the living world, biological classification systems, and detailed characteristics of the five kingdoms (Monera, Protista, Fungi, Plantae, and Animalia) including viruses, viroids, prions, and lichens, designed for competitive exam preparation.
Showing questions 81 - 100 of 168
81. W.M. Stanley (1935) showed that viruses could be crystallised, and crystals consist largely of:
82. Which statement about the genetic material of viruses is correct?
83. Plant viruses generally have:
84. Bacterial viruses, or bacteriophages, are usually:
85. The protein coat of a virus is called a capsid, and it is made of small subunits called:
86. Which of the following diseases are caused by viruses in humans?
87. Who discovered viroids, and what was their key characteristic?
88. Prions are infectious agents consisting of:
89. Bovine spongiform encephalopathy (BSE), or 'mad cow disease', and Creutzfeldt–Jacob disease (CJD) in humans are caused by:
90. Lichens are symbiotic associations between:
91. In a lichen, the algal component is known as the __________ and the fungal component as the __________.
92. Lichens are very good indicators of:
93. Which of the following classification systems for flowering plants was given by George Bentham and Joseph Dalton Hooker?
94. Artificial classification systems are criticized for:
95. Which classification system is based on all observable characteristics, assigns numbers and codes to them, and processes data using computers?
96. The field of plant classification that uses cytological information like chromosome number, structure, and behaviour is called:
97. Algae are characterized as:
98. Which of the following are examples of colonial and filamentous forms of algae, respectively?
99. In algae, the fusion of two gametes dissimilar in size is termed:
100. Which type of sexual reproduction in algae involves a large, non-motile female gamete and a smaller, motile male gamete?