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1. Most of the sea weeds belong to class

Chlorophyceae Dinophyceae


Phaeophyceae Cyanophyceae


2. Algae useful as Bio-fertilizer generally belong to class

Cyanophyceae Chlorophyceae


Xanthophyceae Bacillariophyceae


3. Mushrooms, puff-balls, toad-stools belong to the class

Phycomycetes Ascomycetes


Basidiomycetes Deuteromycetes


4. Sexual reproduction is absent among

Phycomycetes Ascomycetes


Basidiomycetes Deuteromycetes


5. In most fungi mycelial wall is made up of

Chitin Cellulose


Hemicellulose Pectin


6. Fungal spores produced asexually at the tip of hyphae are called

Conidia Sporangiophore


Spores Arthospores


7. Most poisonous mushroom is

Agaricus Polyprous


Amanita Lycoperdon


8. Flowers of Fungi are

Mushroom Toad stools


Puff balls Molds


9. Fungi which occur on wood are

Epibiotic Epicarpic


Epixylic Epigeon


10. Fungi can be stained by

Cotton blue Safranine


Glycerine Lactophenol


11. Basidiospores are characteristic of

Bread mold Mushrooms


Aspergillus Yeast


12. Respiratory structure in bacteria are

Mitochondria Ribosomes


Mesosomes None


13. Bacteria are regarded to be plants because

Some of them are green They are present everywhere


Some of them cannot move They have a rigid cell wall


14. Bacteria do not need sunlight to grow because

They prepare their food without the help of light


They do not like sunlight brightness


Due to absence of chlorophyll they are incapable of manufacturing their own food


They use other kinds of light for manufacturing their own food


15. A free-living bacterium capable of fixing atmosphere nitrogen is

Staphylococcus Streptococcus


Azotobacter None


16. Bacteria have the following organelles

Mesosomes Golgi bodies


Mitochondria Lysosome


17. A bacterial cell differs from higher plants in lacking

Amitosis A true nucleus


Cell wall Ribosomes


18. Bacteria cannot survive in a highly salted pickle because

Salt inhibit reproduction


Bacteria do not get enough light for photosynthesis


They became plasmolysed and consequently killed


The pickle does not contain nutrients necessary for bacteria to live.


19. Bacteria have incipient nucleus (nucleoid) and hence they are placed in

Prokaryota Eukaryota


Both None


20. Bacterial leaf blight is a serious disease of

Paddy Potato


Wheat Tomato


21. Muramic acid is present in the cell wall of

Yeast Bacteria


Rhizopus Virus


22. Tobacco mosaic virus was first isolated in crystalline state by

Sabin Bergold


Chase Stanley


23. Bacteriophage consists of

Carbon and nitrogen DNA


Nucleoprotein Protein only


24. Viruses are essentially made up of

Proteins and nucleic acids Starch carbohydrates


Proteins and lipids Starch, protein and carbohydrates


25. Mosaic of sugarcane is caused by

Bacteria Virus


Fungi Polio


26. First isolated virus is

Poliomylites virus Virus of influenza


TMV of tobacco None of the above


27. Bacteriophage is similar to fungus

In having RNA as genetic material In having DNA as genetic material


In having cell wall Mode of reproduction


28. Which of the following statement is correct

Viruses do not contain nucleic acid All viruses contain DNA


All viruses contain RNA Some viruses contain DNA and some RNA


29. Which one is a viral disease group

Influenza, Measles and Mumps Chicken pox, Small pox


Polio, Hydrophobia All the above


30. A moss differs from a fern in having

Alternation of generation Swimming sperms


dependent sporophyte An independent gametes


31. Annulus in moss capsule separates

Operculum from collumella Theca from collumella


Operculum from theca Columella from apophysis


32. The central middle part of the moss capsule is sterile and is known as

Apophysis Spore sac


Operculum Columella


33. The development of sporophytes from moss gametophytes without sexual fusion is called

Apogamy Apospory


Amphimixis Parthenogenesis


34. In which of the following groups would you place a plant which produces spores and embryos but lacks seeds and vascular tissues

Fungi Pteridophytes


Bryophytes Gymnosperms


35. Spore mother cells of bryophytes are

Haploid Diploid


Tetraploid Polyploid


36. The gametophyte of moss is

Capsule Seta


Zygote Protonema


37. Polystelic stem is seen in

Selaginella Riccia


Funaria Cycas


38. Formation of sporophyte from vegetative portion of prothallus

Apospory Parthenogenesis


Parthenocarpy Apogamy


39. Meiosis does not take place in the formation of gametes from

Prothallus Protonema


Sporangium Promycelium


40. Which of the following does not have a central pith

Siphonostele Dictyostele


Protostele Solenostele


41. The place or point where sporangium of fern bursts is

Operculum Annulus


Stomium Ostiole


42. Fern differs from moss in having

Motile sperms Distinct alteration of generation


Independent sporophyte Independent gametophyte


43. Photosynthesis leaves of fern plants are known as

Fronds Sporophylls


Ramenta Microphylls


44. Guard cells differ from epidermal cells in having

Mitochondria Vacuole


Cell wall Chloroplast


45. Sporangia bearing leaf is called

Ramentum Indusium


Sorus Sporophyll


46. Cells which undergo meiosis in the life cycle of Selaginella are

Zygotes Spore mother cells


Spores Gametophyte


47. Coralloid roots help the plant in

Absorption of water Absorption and fixation of Nitrogen


Anchorage None of the above


48. The Cycas is a gymnosperm because

Its xylem consists of trachieds It lacks ovary but has exposed ovules


It forms seeds It bears pollen grains


49. Cycas and Pteris resemble each other in the presence of

Cambium Ciliate sperms


Vessels Seeds


50. Secondary wood in Cycas is devoid of

Protoxylem Metaxylem


Vessels Trachieds


51. Endosperm of pinus or cycas is found to be

Haploid Diploid


Triploid Tetraploid


52. Fruits are not found in gymnosperms due to absence of

Ovary Pollination


Seeds Fertilization


53. Cycas differ from Selaginella in having

Embryo Seed


Megaspores Motile sperms


54. Organisms which fix atmospheric nitrogen in the soil are found among

Mosses Green algae


Soil fungi Bacteria


55. Mineral matter in the soil is due to

Decomposition of humus Heavy rain fall


Disintegration of rocks Transporation of top soil


56. Plants have supply of water from soil as

Runoff water Gravitational water


Capillary water Hygroscopic water


57. Chlorophyll contains

Iron Magnesium


Potassium Manganese


58. Chlorosis occurs in plants grown in

Darkness Shade


Strong light Iron-free medium


59. Which one is an inorganic nutrient

Cellulose Vitamin


Calcium Protein


60. Root hairs occur in the zone of

Cell division Cell elongation


Cell maturation None of the above


61. Root cap has no role in water absorption because

It has no direct connection with soil It has loosely arranged cells


It has cells containing chloroplast It has no root hairs


62. When a cell is fully turgid its

SP=TP DPD=O


OP=O DPD=OP


63. Stomatal opening in a general leaf is controlled by

Guard cells Palisade cells


Parenchyma cells Mesophyll cells


64. Exudation of water in the form of liquid from leaves of plants is called

Guttation Osmosis


Transpiration Plasmolysis


65. Rate of transpiration can be measured by

Potometer Auxanometer


Manometer Hygrometer


66. Enzymes connected with Kreb's cycle are packed in

Mitochondria Chloroplast


Nucleus Ribosomes


67. In photosynthesis light

is converted into kinetic energy acts directly on C


is converted into chemical energy acts like catalysts


68. The first compound that accepts Carbon dioxide during dark phase is

NADP Ferredoxin


RuBp Cytochrome


69. When ATP is converted into ADP, it releases

Electricity Hormones


Enzymes Energy


70. If fructose-6-biphosphate participate in glycolysis, the net gain of ATP will be

4
71. Biological equilibrium is equilibrium among

Producers Producers consumers


Decomposers producers Producer, decomposer consumers


72. MAB stands for

Man Biosphere Man, antibiotic bacterium


Man biotic community Meyer, Anderson Bisby


73. Herbivores utilize how much energy from the food they get to build their body

10% 20%


33% 50%


74. If phytoplankton are destroyed in the sea, then

It will affect the food chain No affect will be seen


Algae will get more space to grow Primary consumers will grow luxuriantly


75. Overgrazing by animals results in

Sheet erosion Rill erosion


Positive pollution Negative pollution


76. The term hybridoma implies

gametic fusion hybrid virion


somatic hybridization DNA-RNA hybrid


77. Saprophytic bacteria and fungi come under the group

Producers Omnivores


Decomposers None of these


78. Study of a species in relation to its environment is known as

Synecology Autecology


Ecology All the above


79. Mangrove vegetation is found in

Kullu valley Sundarbans


Western ghats Dehradun valley


80. Progeny of a cross made between two pure parents show increased vigour and productivity. This is due to

Selection Hybridization


Hybrid vigour Mutation


81. Method of selection in plants showing vegatative propagation is

Clonal selection Mass selection


Pure line selection Pedigree selection


82. Banana plants can be rapidly multiplied adopting

Aerial grafting Aerial stem cutting


Rhizome cutting X-ray Irradiation of fruits


83. Mutagenic effect of X-rays was discovered by

T.H.Morgan H.J.Muller


G.W. Beadle Hugo De vries


84. When chromosomes sets are presents in multiple of the condition is called

Euploidy (Polyploidy) Aneuploidy


Diploidy Haploidy


85. Red rot of sugarcane is caused by

Colletrotrichum Rhizoctonia


Pyricularia Fusarium


86. Covered smut of sorghum is caused by

Puccinia Sphacelotheca


Cercospora Colletrotrichum


87. Which of the following is a fungicide

DDT Bordeaux mixture


Penicillin


88. Vascular wilt diseases are mostly caused by

Puccinia Sphacelotheca


Fusarium Colletrotrichum


89. Damping off of seedlings is caused by species of

Pythium Phytophthora


Albugo Alternaria


90. The function of rough endoplasmic reticulum is synthesis of

Fat Lipid


Protein Steroid


91. Somoclonal variation are

Caused by mutagens Cause gamma rays


Produced in Tissue culture Produced during sexual reproduction


92. DNA generally acts as template of

only protein only DNA


only RNA both DNA and RNA


93. Formation of RNA from DNA is known as

Transcription Translation


Replication Recombination


94. Which of the following wavelength is absorbed maximum for photosynthesis

660 nm 680 nm


440 nm 700 nm


95. Transamination is a/an

irreversible process reversible process


both of the above none of the above


96. The most important lipids in eukaryotic cell membranes are

Sterols Glycolipids


Phospholipids All the above


97. What does Bt stand for in popular crop of Bt cotton
Biotechnology Tissue culture
Bacillus thurengiensis None of these
98. First step in genetic engineering is

Isolation of RNA Isolation of Protein


Isolation of genetic material Purification of protein


99. Natural genetic engineer is

Agrobacterium sp Rhizobium sp


Bacillus sp Bacteriophage


100. The term hybridoma implies

Gametic Hybrid virion


Somatic hybridization DNA-RNA hybrid


101. "Eobiont" means

Mutual occurrence of two organisms Parasite causing amoebiosis


First organism on earth Anitrifying bacteria


102. Pure homozygous offsprings in a dihybrid cross in the F2 generation will be

1/2 1/4


1/8 1/16


103. Who coined the term 'meiosis'

F.F. Blackmann I.B.Farmer (and Moore)


a.Flemming Von Mohl


104. Synapsis is a characteristic of
Leptotene Zygotene
Pachytene Diplotene

105. Stilt roots are produced by

Lower internodes Upper internodes


Lower nodes Upper nodes


106. Velamen tissue is formed by

Stem Clinging roots


Hanging roots None of these


107. Black pepper is a

Tree Shrub


Climber 3 cm. tall herb


108. Smallest angle of divergence in altering phyllotaxy is

144o 180o


120o 135o


109. Intercalary meristem results in

Secondary growth Primary growth


Apical growth Perdiderm formation


110. The "Histogen theory" was proposed by

Nageli Hanstein


Schmidt Haberlandt


111. Vessels are not found in

Teak wood Shisham wood


Chir wood Sal wood


112. An elongated cell with tapering ends is termed

Collenchyma Vessel


Sclerenchyma Trachieds


113. Micropropagation is carried out by

Hybridisation Genetic Recombination


Parasexual mechanism Tissue culture


114. The outer Whorl of Bougaunvillea flower consists of

Bracts Sepals


Petals None of these


115. Pollen grain in Angiosperms contain

Single prothallus cell Two prothallus cells


Three prothallial cells No prothallial cell


116. A typical example of cross pollination is

Rice Maize


Wheat Cotton


117. The angiosperms are known as

Magnoliophyta Rosophyta


Mavophyta Gramophyta


118. Who was first to distinguish between non-flowering and seed plants

Robert Brown Linnaeus


John Ray De Condolle


119. In which family out of the following, largest number of ovule occur in a carpel

Cruciferae Ranunculaceae


Compositae Leguminosae


120. The name of the family compositae is

Brassicaceae Asteraceae


Laminaceae Bombaceae


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