General Science Mcq for RRB Group D
Q1. In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells.
(a) there is breakdown of these regulatory mechanism leading to formation of benign and malignant tumors
(b) controlled cell division and over production of genetic material occur
(c) RNA is mutated and produced in less amount
(d) DNA is mutated and produced in less amount
Ans: (a)
Q2. A ‘clinical death’ takes place when
(a) There is no pulse
(b) There is no heart beat
(c) Pupils are fixed and dilated, and there is no reaction to light
(d) All the above three conditions are present together
Ans: (d)
Q3. Man has become the dominant species in the biosphere because of his
(a) Tool-making capacity
(b) Ingenious brainpower
(c) Articulated speech and language
(d) All the above mentioned qualities
Ans: (d)
Q4. Movements due to light are shown by
(a) Flowering plants
(b) Lower plants
(c) All land plants
(d) All the plants
Ans: (a)
Q5. The main difference between the living and nonliving is
(a) in the growth
(b) in the size
(c) in the movement
(d) in the presence of protoplasm
Ans: (d)
Q6. Which is regarded as a link between the living and the non-living?
(a) Amoeba
(b) Virus
(c) Bacteria
(d) RNA
Ans: (b)
Q7. The basic unit of all living organisms is
(a) A drop of blood
(b) A molecule of glucose
(c) A set of proteins
(d) A cell
Ans: (d)
Q8. Which of the following is the basic characteristic of a living organism?
(a) Ability to move
(b) Ability to reproduce
(c) Ability to eat
(d) Ability to breathe
Ans: (b)
Q9. Which of the following branches of science is concerned with the study of the relationship of plants to their environment?
(a) Cytology
(b) Ecology
(c) Morphology
(d) Physiology
Ans: (b)
Q10. Bacteria do not need sunlight to grow because
(a) They lack chlorophyll and so they are incapable of making their own food
(b) They hate sunlight
(c) They use other kinds of light for their food synthesis
(d) They prepare their food without the help of sunlight
Ans: (d)
Q11. Most viruses that infect plant possess
(a) single-stranded DNA
(b) single-stranded RNA
(c) double-stranded DNA and RNA
(d) double – stranded RNA only
Ans: (b)
Q12. A cockroach has
(a) Three pairs of walking legs
(b) Two pairs of walking legs
(c) Four pairs of walking legs
(d) One pair of walking legs
Ans: (a)
Q13. All the following are invertebrates except
(a) Snail
(b) Crab
(c) Prawn
(d) Fish
Ans: (d)
Q14. Bacteria reproduce
(a) By sexual method only
(b) By asexual method only
(c) Mostly by sexual method
(d) Mostly by asexual method
Ans: (d)
Q15. Crows and pigeons are
(a) Warm-blooded
(b) Cold-blooded
(c) Neither (a) nor (b)
(d) Both (a) and (b)
Ans: (a)
Q16. Fungi are always
(a) Autotrophic
(b) Heterotrophic
(c) Parasitic
(d) Saprophytic
Ans: (b)
Q17. Lichen is considered to be a symbiotic association of two living organisms. Which organisms are involved in it?
(a) Algae and bacteria
(b) Algae and fungi
(c) Algae and bryophytes
(d) Fungi and bryophytes
Ans: (b)
Q18. Mammals are
(a) Warm-blooded
(b) Cold-blooded
(c) Both (a) and (b)
(d) None of these
Ans: (a)
Q19. Man belongs to the phylum
(a) Mollusca
(b) Chordata
(c) Porifera
(d) Amphibian
Ans: (b)
Q20. Outer covering of virus made up of protein is
(a) Capsid
(b) Coat
(c) Virion
(d) Viroid
Ans: (a)
Q21. Snakes and lizards are animals that are
(a) Warm-blooded
(b) Cold-blooded
(c) Both
(d) None of these
Ans: (b)
Q22. The virus that infects a bacterium is
(a) Arbovirus
(b) Viremia
(c) Bacteriophage
(d) Baclofen
Ans: (c)
Q23. Which of the following is a parasitic plant?
(a) Marchantia
(b) Kelp
(c) Mushroom
(d) Pteris
Ans: (c)
Q24. Which of the following is an amphibian?
(a) Whale
(b) Turtle
(c) Frog
(d) Cow
Ans: (c)
Q25. Which of the following is not a mammal?
(a) Fish
(b) Cow
(c) Goat
(d) Whale
Ans: (a)
Q26. Algae often float on surface of water during the day but sink down during the night due to
(a) Evolution and trapping of oxygen bubbles during the day in their photosynthesis
(b) Becoming light as they consume most of their food in the night
(c) Warming action of sun during the day
(d) Release of absorbed air by warming of water
Ans: (a)
Q27. Aves are
(a) Cold-blooded
(b) Warm-blooded
(c) Both
(d) None of these
Ans: (b)
Q28. Bacteria and fungi developing on dead decaying organisms are
(a) Parasites
(b) Commensals
(c) Saprophytes
(d) Symbionts
Ans: (c)
Q29. Bacteria can live in cold climate for
(a) Few years
(b) 1,000 years
(c) 2,000 years
(d) Many years
Ans: (d)
Q30. Bacteria having flagella all over the body are called
(a) Lophotrichous
(b) Monotrichous
(c) Peritrichous
(d) Morphotrichous
Ans: (c)
Q31. Inflorescence is
(a) Group of flowers
(b) Occurrence of flowers
(c) Arrangement of flowers
(d) Arrangement of flowers on the floral axis
Ans: (d)
Q32. Insects belong to the phylum
(a) Annelida
(b) Arthropoda
(c) Crustaceans
(d) Coelenterate
Ans: (b)
Q33. Of the following taxonomic categories which is the most inclusive (i.e., is the highest in hierarchy)?
(a) Order
(b) Subspecies
(c) Class
(d) Genus
Ans: (c)
Q34. Our major foods, fibres, spices, fruits and beverage crops are
(a) Flowering plants
(b) Gymnospermous plants
(c) Pteridophytes
(d) Bryophytes
Ans: (a)
Q35. A cell cycle consists of
(a) Mitosis and meiosis
(b) GI, the Sphase, and G2
(c) Prophase, metaphase, anaphase and telophase
(d) Interphase and mitosis
Ans: (d)
Q36. Gene is
(a) A segment of DNA or functional RNA
(b) A segment of DNA and histone
(c) A segment of DNA, RNA and histone
(d) All of the above
Ans: (a)
Q37. Genes control
(a) Protein synthesis but not heredity
(b) Protein synthesis and heredity
(c) Heredity but not protein synthesis
(d) Biochemical reaction of some enzymes
Ans: (b)
Q38. Genetics is the branch of science that deals with the study of
(a) Relations between plants and the environment
(b) Inheritance and variation
(c) Cell structure
(d) Thermal structures
Ans: (b)
Q39. The human cell contains
(a) 44 chromosomes
(b) 48 chromosomes
(c) 46 chromosomes
(d) 23 chromosomes
Ans: (c)
Q40. The power house of energy in cells is
(a) Golgi bodies
(b) Mitochondria
(c) Ribosomes
(d) Endoplasmic reticulum
Ans: (b)
Q41. The process of cell division can take place by
(a) Heterosis
(b) Fusion
(c) Mitosis
(d) None of these
Ans: (c)
Q42. The process of the division of somatic cells of an organism is called
(a) Mitosis
(b) Meiosis
(c) Cytokinesis
(d) None of these
Ans: (a)
Q43. A plant cell is distinguished from an animal cell by the presence of
(a) Nucleus
(b) Chloroplasts
(c) Cell membrane
(d) Mitochondria
Ans: (b)
Q44. Every multicellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an
(a) Egg
(b) Sperm
(c) Nucleus
(d) Gene
Ans: (a)
Q45. HCI is secreted by
(a) Zymogen cells
(b) Peptic cell
(c) Oxyntic cells
(d) None of these
Ans: (c)
Q46. In which of the following will you look for E. Coli?
(a) Milk
(b) Water
(c) Human intestine
(d) Soil
Ans: (c)
Q47. Just as the division of cytoplasm is called cytokinesis, the division of nucleus is called
(a) Heterosis
(b) Mitosis
(c) Meiosis
(d) Karyokinesis
Ans: (d)
Q48. The basic structure of cell membranes
(a) Is a lipid bilayer that serves as a barrier to water soluble molecules
(b) Differs ultra structurally for internal and external membranes of cell
(c) Is best described as lipids dispersed within a protein bilayer
(d) Is visualised as bilaminar structure with transmission electron microscopy
Ans: (a)
Q49. The organelle that make ATP is
(a) Microbody
(b) Nucleus
(c) Mitochondrion
(d) Ribosome
Ans: (c)
Q50. A high surface area to volume ratio in cells is important because it
(a) Enables efficient transfer of wastes, nutrients and gases across the cell membrane
(b) Prevents overproduction of cell proteins due to structural limitations
(c) Allows many antigens on the surface for identification of self and non-self
(d) Provides for better structural support to cope with external physical pressure
Ans: (a)
Q51. Broad spectrum antibiotics are one which attack
(a) Pathogens as well as host
(b) A wide range of pathogens
(c) Only pathogens
(d) Only host
Ans: (b)
Q52. The fluid medium of the nucleus is called
(a) Chromosomes
(b) Nucleolus
(c) Nucleoplasm
(d) Chromatin
Ans: (c)
Q53. The substance that makes up about 80% of cytoplasm
(a) Minerals
(b) Water
(c) Protein
(d) Fats
Ans: (b)
Q54. The type of relationship in which one organism is benefited while there is no effect on other is
(a) Symbiosis
(b) Commensalisms
(c) Mutualism
(d) Parasitism
Ans: (b)
Q55. Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely
(a) A plant
(b) An animal
(c) A fungus
(d) A bacterium
Ans: (a)
Q56. Polynucleotide chain of DNA contains
(a) a nitrogenous base, deoxyribose sugar and phosphate group
(b) a nitrogenous base, ribose sugar and phosphate group
(c) deoxyribose sugar ribose sugar and phosphate group
(d) a nitrogenous base and phosphate group only
Ans: (a)
Q57. Neurospora is used as genetic material because
(a) It has short life cycle of 10 days
(b) The product of single meiosis can be easily analysed
(c) Meiotic products are linearly arranged in the form of ordered tetrads
(d) Is a diploid fungus
Ans: (a)
Q58. AIDS is caused by the Human Immunodeficiency Virus (HIV) The transmission of HIV infection generally occurs through.
(a) eating contaminated food and water
(b) transfusion of contaminated blood and blood products
(c) inhaling polluted air
(d) shaking hand with infected person
Ans: (b)
Q59. The offspring from a cross between two individuals differing in at least one set of characters is called a
(a) Polyploid
(b) Hybrid
(c) Mutant
(d) Variant
Ans: (b)
Q60. The process of copying genetic information from one strand of DNA in to RNA is termed as
(a) translation
(b) transcription
(c) replication
(d) mutation
Ans: (b)
Q61. Cell recognition and adhesion occur due to biochemicals of cell membrane named
(a) Proteins
(b) Lipids
(c) Proteins and lipids
(d) Glycoproteins and glycolipids
Ans: (d)
Q62. Cell wall of chloroplast is removed, the remaining is called
(a) Etioplast
(b) Aleuroplast
(c) Amyloplast
(d) Protoplast
Ans: (d)
Q63. Endocytosis is a process whereby a cell
(a) Digests itself
(b) Engulfs and internalises material using its membrane
(c) Identifies other cells within its immediate
(d) Enables the extracellular digestion of large molecules
Ans: (b)
Q64. Following are the characteristic of genetic code
(a) It is triplet
(b) It is universal
(c) It is non-overlapping
(d) It is ambiguous
Ans: (a)
Q65. In meiosis the daughter cells are not similar to that of parent because of
(a) Crossing over
(b) Synapsis
(c) Both (a) and (b)
(d) None of these
Ans: (a)
Q66. The only molecule in the living world that can replicate itself is
(a) DNA
(b) RNA
(c) Both DNA and RNA
(d) Neither DNA nor RNA
Ans: (a)
Q67. The RNA molecules from a single strand of ribonucleotides of
(a) Adenine, guanine, cytosins and uracil
(b) Adenine, guanine and cytosins
(c) Adenine and guanine
(d) None of the above
Ans: (a)
Q68. The role of transfer RNS (IRNA) is to
(a) Transfer mRNA from the nucleus to the cytoplasm
(b) Carry amino acids from the cytoplasm to the nucleus
(c) Carry the newly synthesised protein to its site of function in the cell
(d) Transport amino acids to ribosomes
Ans: (d)
Q69. The two strands of the DNA double helix are held together by
(a) Hydrogen bonds
(b)C=C double bonds
(c) Hydrophobic bonds
(d) Peptide bonds
Ans: (a)
Q70. What is the most likely explanation for the observation that two individuals originating from the same clone look different?
(a) They developed in different environments
(b) They are differentially adapted to the same environment
(c) The clone from which they originated had more than one genotype
(d) They differ in heterozygosity
Ans: (a)
Q71. When white -flowered plant were crossed with pure red – flowered plants, the progeny were –
(a) White flowered
(b) Red flowered
(c) Exhibiting 3:1 ratio of red to whiteflowered plants
(d) Exhibiting 1:1 ratio of red to whiteflowered plants
Ans: (b)
Q72. Which organelle does assemble ribosomes?
(a) Nuclear envelope
(b) Nucleolus
(c) Chromosomes
(d) Nucleoplasm
Ans: (b)
Q73. Which statement is true of rRNA?
(a) Called soluble RNA
(b) Named by Jacob and Monod
(c) The smallest molecule of RNA
(d) They form 80% of the total RNA
Ans: (d)
Q74. Which of the following is not a correct combination?
(a) Prophase, metaphase, anaphase, telophase
(b) Leptonema, zygonema, pachynema, diplonema
(c) Diplonema, anaphase I, telophase I, mitosis
(d) Prophase II, metaphase II, anaphase II, telophase II
Ans: (c)
Q75. Cleavage divisions differ from normal mitotic divisions in that:
(a) There is no nuclear division during cleavage
(b) There is no division of cytoplasm during cleavage
(c) The division of cytoplasm follows nuclear division
(d) There is no period of growth in between divisions
Ans: (d)
Q76. DNA molecules are composed of deoxyribonucleotides of
(a) Adenine and guanine
(b) Adenine, guanine and cytosine
(c) Adenine, guanine, cytosine and thymine
(d) None of the above
Ans: (c)
Q77. DNA nucleotides are attached by
(a) Hydrogen bonds
(b) Covalent bonds
(c) VANDER Wall’s force
(d) Electrovalent bonds
Ans: (b)
Q78. DNA replication means
(a) DNA → DNA
(b) DNA → RNA
(c) Autocatalytic function of DNA
(d) Heterocatalytic function of DNA
Ans: (a)
Q79. How many different kinds of amino acids are specified by the genetic code?
(a) 15
(b) 20
(c) 12
(d) 200
Ans: (b)
Q80. A ligament is
(a) A fibrous tissue that joins the muscle to bone
(b) A type of amorphous gel that cements non movable joints together
(c) A type of fibrous connective tissue that joins bones together at joints
(d) Only formed to repair damaged muscle tissue
Ans: (c)
Q81. A pl ant leaf appears to be green because it
(a) Absorbs green light
(b) Reflects all but yellow and blue light
(c) Reflects green light
(d) Absorbs red and yellow light
Ans: (c)
Q82. Which tissue is responsible for the passage of water in plants?
(a) Sclerenchyma
(b) Xylem
(c) Phloem
(d) Collenchynatous cells
Ans: (b)
Q83. Delicious chilgoza seeds, commercially important products such as turpentine and resin and the drug ephedrine, useful in asthma and other respiratory ailments, are all obtained from plants that are
(a) Ferns
(b) Algae
(c) Monocotyledons and dicotyledons
(d) Gymnosperms
Ans: (d)
Q84. Edible part of cauliflower is –
(a) Bud
(b) Inflorescence
(c) Flower
(d) Fruit
Ans: (b)
Q85. Edible part of mango and coconut is
(a) Mesocarp, endocarp
(b) Endocarp and mesocarp
(c) Mesocarp and pericarp
(d) Style and stigma
Ans: (a)
Q86. From which part of the plant is turmeric obtained?
(a) Root
(b) Fruit
(c) Seed
(d) Stem
Ans: (d)
Q87. Fruiting body of mushrooms is present in
(a) Fungi
(b) Algae
(c) Like monocotyledon seeds
(d) Like dicotyledon seed
Ans: (a)
Q88. Ginger and sweet potato are
(a) Homologous
(b) Stem and roots respectively
(c) Analogous
(d) Both (b) and (c)
Ans: (d)
Q89. Maize grain is
(a) A seed
(b) An embryo
(c) An ovule
(d) A fruit
Ans: (d)
Q90. The odd one among the following is
(a) Monocytes
(b) Lymphocyte
(c) Neutrophils
(d) Erythrocytes
Ans: (d)
Q91. Phloem is a tissue found in
(a) Reproductive organs of animals
(b) Plants
(c) Insects
(d) Mammals
Ans: (b)
Q92. Potato is a modified form of
(a) Root
(b) Stem
(c) Fruit
(d) Leaf
Ans: (b)
Q93. Scarification of seeds is done for removing
(a) Dormancy
(b) Germination inhibitors
(c) Growth
(d) Embryo
Ans: (a)
Q94. The smallest flowering plant is
(a) Amorphophallus
(b) Azadaachta indica
(c) Erecta indica
(d) Wolffia arrhiza
Ans: (d)
Q95. What is tissue culture?
(a) Preparation of fragments of cell of an organism for biochemical examination
(b) Storage of human tissue for transplantation
(c) A special type of skin grafting to treat burn cases
(d) None of the above
Ans: (a)
Q96. When we eat cauliflower we consume
(a) Leaf
(b) Stem
(c) Flower
(d) Inflorescence
Ans: (d)
Q97. Which of the following are mostly woody trees, always perennials and never herbs or annuals?
(a) Angiosperms
(b) Gymnosperms
(c) Pteridophytes
(d) Bryophytes
Ans: (b)
Q98. A dicot root shows
(a) Large pith
(b) Reduced or no pith
(c) Endarch xylem
(d) Conjoint bundles
Ans: (b)
Q99. Adventitious roots develop from
(a) Epidermis
(b) Pericycle or interfascicular parenchyma
(c) Cortex
(d) Endodermis
Ans: (b)
Q100. Dicot root having more than six vascular bundles is
(a) Pea
(b) Sunflower
(c) Ficus
(d) Ranunculus
Ans: (a)