Biology MCQ (Multiple Choice Questions) - SchoolingAxis

Biology MCQ (Multiple Choice Questions)

 Que- Virus is__________? 

a. unicellular  

b. multicellular  

c. acellular  

d. none of these 


Answer- acellular


Que- Term the time during which an orgnism is present in the body before causing disease ? 

a. Rest period  

b. Incubation period  

c. Sleeping period  

d. Inclubation time 


Answer- Incubation period


Que- Insects responsible for transmitting diseases are called___________? 

a. Drones  

b. Vectors  

c. Hybirds  

d. None of these 


Answer- Vectors


Que- Out of proteins, lipids and carbohydrates present in a cell membrane, what is true? 

a. Lipids are maximum 

b. Carbohydrates are minimum 

c. Carbohydrates are maximum 

d. All three are in equal proportion 


Answer- Carbohydrates are minimum


Que- Potato is a modified form (outgrowth) of: 

a. root 

b. stem 

c. fruit 

d. leaf 


Answer- stem


Que- 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 


Answer- Class


Que- Prothrombin which helps in clotting of blood is released by 

a. lymphocytes 

b. erythrocytes 

c. monocytes 

d. blood platelets 


Answer- blood platelets


Que- Myopia is connected with 

a. ears 

b. eyes 

c. lungs 

d. None of these 


Answer- eyes


Que- Organic Substances which, in very small amounts, control growth and development called 

a. vitamins 

b. hormones 

c. enzymes 

d. None of the above 


Answer- hormones


Que- Our major foods, fibres, spices, fruits and beverage crops are 

a. flowering plants 

b. gymnosperms plants 

c. pteridophytes 

d. bryophytes 


Answer- flowering plants


Que- Movements due to light are shown by 

a. flowering plants 

b. lower plants 

c. all land plants 

d. all the plants 


Answer- flowering plants


Que- Outer covering of virus made up of protein is 

a. capsid 

b. coat 

c. virion 

d. viriod 


Answer- capsid


Que- Radish is a 

a. bulb 

b. conn 

c. modified root 

d. tuber 


Answer- modified root


Que- Movement of cell against concentration gradient is called 

a. osmosis 

b. active transport 

c. diffusion 

d. passive transport 


Answer- active transport


Que- Photosynthesis generally takes place in which parts of the plant? 

a. Leaf and other chloroplast bearing parts 

b. steam and leaf 

c. Roots and chloroplast bearing parts 

d. Bark and leaf 


Answer- Leaf and other chloroplast bearing parts


Que- Most fish do not sink in water because of the presence of:I. swim bladderII. air bladderIII. air sacsIV. air in spongy bones 

a. I and II are correct 

b. II and III are correct 

c. III and IV are correct 

d. I, II, III and IV are correct 


Answer- I and II are correct


Que- Plants synthesis protein from 

a. starch 

b. sugar 

c. amino acids 

d. fatty acids 


Answer- amino acids


Que- Plants are killed in winter by frost 

a. because of desiccation and mechanical damage to the tissues 

b. because no photosynthesis takes place at such low temperature 

c. because respiration ceases at such low temperature 

d. because there is no transpiration 


Answer- because of desiccation and mechanical damage to the tissues


Que- One of the following is most suitable for study of mutations 

a. Haploids 

b. Diploids 

c. Tetraploids 

d. Polyploid 


Answer- Haploids


Que- Pulses are a good source of 

a. carbohydrates 

b. fats 

c. proteins 

d. vitamins 


Answer- proteins


Que- Oxygen in our blood is transported by a protein named 

a. haemoglobin 

b. keratin 

c. collagen 

d. myoglobin 


Answer- haemoglobin


Que- Nymph is the name of young one of 

a. butterfly 

b. beetle 

c. housefly 

d. cockroach 


Answer- cockroach


Que- Primary phloem develops from 

a. lateral meristem 

b. protoderm 

c. extrastelar cambium 

d. provascular tissue 


Answer- provascular tissue


Que- Other than spreading malaria, anopheles mosquitoes are also vectors of 

a. dengue fever 

b. filariasis 

c. encephalitis 

d. yellow fever 


Answer- filariasis


Que- Plants that grow in saline water are called 

a. halophytes 

b. hydrophytes 

c. mesophytes 

d. thallophytes 


Answer- halophytes


Que- Pyorrhoea is a disease of the 

a. nose 

b. gums 

c. heart 

d. lungs 


Answer- gums


Que- O2 released in the process of photosynthesis comes from 

a. CO2 

b. water 

c. sugar 

d. pyruvic acid 


Answer- water


Que- Placenta is the structure formed 

a. by the union of foetal and uterine tissue 

b. by foetus only 

c. by fusion of germ layers 

d. None of these 


Answer- by the union of foetal and uterine tissue


Que- Plants hormone that induces cell division is 

a. auxins 

b. gibberellins 

c. kinins 

d. domins 


Answer- gibberellins


Que- 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 


Answer- it has short life cycle of 10 days


Que- Phloem is a tissue found in 

a. reproductive organs of animals 

b. plants 

c. insects 

d. mammals 


Answer- plants


Que- N2 content is kept constant in the biosphere due to 

a. N2 fixation 

b. industrial pollution 

c. nitrogen cycle 

d. absorption of N2 


Answer- nitrogen cycle


Que- Most common disease of poultry in India is 

a. fowl pox 

b. tick fever 

c. ranikhet 

d. coryza 


Answer- ranikhet


Que- Most abundant tissues of our body are 

a. muscular 

b. connective 

c. epithelial 

d. nervous 


Answer- muscular


Que- Mumps is a disease caused by 

a. fungus 

b. bacterium 

c. virus 

d. None of these 


Answer- virus


Que- Rain water helps to increase the ____ to some extent. 

a. phosphorous contents 

b. nitrogen contents 

c. calcium contents 

d. potash contents 


Answer- calcium contents


Que- Number of chromosomes in down's syndrome is 

a. 46 

b. 47 

c. 48 

d. 49 


Answer- 47


Que- Plant bends towards the source of light on account of the movement of curvature known as 

a. geotropism 

b. thigmotropism 

c. chemotropism 

d. phototropism 


Answer- phototropism


Que- Plant have ____ while animals lack it. 

a. starch 

b. cellulose 

c. protein 

d. fat 


Answer- cellulose


Que- Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement? 

a. Exact concentration of solution is not given 

b. Character of semi permeable membrane is not given 

c. The flow of solution is not possible through semi permeable membrane 

d. All are incorrect 


Answer- The flow of solution is not possible through semi permeable membrane


Que- Photosynthesis is a process 

a. reductive and exergonic 

b. reductive and catabolic 

c. reductive, endergonic and catabolic 

d. reductive, endergonic and anabolic 


Answer- reductive, endergonic and anabolic


Que- On which of the following plants did Gregor Mendal perform his classical experiment? 

a. Gram 

b. Maize 

c. Pea 

d. Wheat 


Answer- Pea


Que- Pigmentation of skin is due to 

a. lymphocytes 

b. monocytes 

c. leucocytes 

d. melanocytes 


Answer- melanocytes


Que- Norepinephrine increases 

a. respiration 

b. urine production 

c. saliva production 

d. blood pressure 


Answer- blood pressure


Que- Night blindness is cause by lack of which vitamin? 

a. Vitamin A 

b. Vitamin B 

c. Vitamin C 

d. Vitamin D 


Answer- Vitamin A


Que- Monocot root differs from dicot root in having 

a. open vascular bundles 

b. scattered vascular bundles 

c. well developed pith 

d. radially arranged vascular bundles 


Answer- well developed pith


Que- Radioactivity is a phenomenon of the spontaneous emission of 

a. protons (alpha particles) 

b. electrons (beta particles) 

c. gamma rays (short wave electromagnetic waves) 

d. All of the above 


Answer- All of the above


Que- Most of the red, blue and purple colours of plants are due to a pigment called 

a. anthocyanin 

b. carotene 

c. chlorophyll 

d. xanthophylls 


Answer- anthocyanin


Que- Plants developing in dry conditions are 

a. xerophytes 

b. mesophytes 

c. lithophytes 

d. hydrophytes 


Answer- xerophytes


Que- Plants growing on sand are called as 

a. chasmophytes 

b. oxylophytes 

c. lithophytes 

d. psammophytes 


Answer- psammophytes


Que- Our skin, when exposed to excess sunlight, becomes dark. This is because of our skin pigments called 

a. flavoxanthin 

b. melanin 

c. carotene 

d. Xanthophyll 


Answer- melanin


Que- Ramapithecus and Cro-Magnon man are considered 

a. ancestors of modern man 

b. ancestors of monkey 

c. ancestors of lion 

d. None of the above 


Answer- ancestors of modern man


Que- The main function of Henle's loop is 

a. Passage of urine  

b. Filtration of blood  

c. Formation of urine  

d. Conservation of water  


Answer- Conservation of water 


Que- The ultimate cause of water movement in a plant stem against gravity is 

a. Osmosis 

b. Photosynthesis 

c. Transpiration 

d. Diffusion 


Answer- Transpiration


Que- They protect plants from water loss and abrasive damage. 

a. Leaves 

b. Waxes 

c. Minerals 

d. None of the above 


Answer- Waxes


Que- Th suitable conditions in which the rate of evaporation occurs more fastly are 

a. Low speed of wind 

b. High humidity 

c. Low humidity and high temperature 

d. Excess amount of water in the soil 


Answer- Low humidity and high temperature


Que- The device to measure transpiration in plants is 

a. Hygrometer 

b. Crescometer 

c. Potometer 

d. Clinometer 


Answer- Potometer


Que- Longest bone found in man 

a. Stapes 

b. Fibula 

c. Tibia 

d. Femur 


Answer- Femur


Que- The female sex organs in a flower is the ________ . 

a. Zoospores 

b. Stamen 

c. Pistil 

d. Chlorophyceae 


Answer- Pistil


Que- The male sex organs in a flower is the ________ . 

a. Zoospores 

b. Stamen 

c. Pistil 

d. Chlorophyceae 


Answer- Stamen


Que- Which part of flower produces pollen grains that are generally yellowish in color? 

a. Sepals 

b. Petals 

c. Stamens 

d. Carpels 


Answer- Stamens


Que- Which one of the following is the longest flower in the world? 

a. Lotus 

b. Sunflower 

c. Rafflesia 

d. Glory Lily 


Answer- Rafflesia


Que- Usually the conspicuous ,coloured ,attractive part of flower is termed is 

a. Sepals 

b. Carpels 

c. Petals 

d. Stamens 


Answer- Petals


Que- The phenomenon of summer sleep by animals is called 

a. Hibernation 

b. Aestivation 

c. Laziness 

d. Lethargy 


Answer- Aestivation


Que- Animals who have constant body temperature are 

a. Homeothermic 

b. Hemothermic 

c. Hematology 

d. Histology 


Answer- Homeothermic


Que- Which type of cell, skin is made up of: 

a. Epidermal cells 

b. Connective tissue 

c. Permanent tissues 

d. Parenchyma 


Answer- Epidermal cells


Que- Cold blooded animals are known as 

a. Homiotherms  

b. Eurytherms  

c. Endotherms  

d. Poikilotherms  


Answer- Poikilotherms 


Que- Ginger is a stem and not a root because 

a. It stores food 

b. It lacks chlorophyll 

c. It has nodes and internodes 

d. None of the above 


Answer- It has nodes and internodes


Que- Blood group which have no antibodies 

a. A 

b. B 

c. AB 

d. O 


Answer- AB


Que- The sound lub-dub lub-dub is produced by 

a. Liver 

b. Kidney 

c. Heart 

d. Lung 


Answer- Heart


Que- Blood is red in colour due to the presence of ________  

a. Cytochrome 

b. Chlorophyll 

c. Hemocyanin 

d. Haemoglobin 


Answer- Haemoglobin


Que- Jellyfish belongs to which phylum 

a. Porifera  

b. Cnidaria  

c. Nematoda  

d. Mollusca  


Answer- Cnidaria 


Que- Which group of animals was the first to evolve to fly 

a. Reptiles  

b. Mammals  

c. Insects  

d. Birds  


Answer- Insects 


Que- The skeleton secreting cells in poriferans are known as 

a. Scleroblasts  

b. Collenocytes  

c. Archaeocytes  

d. Pinacocytes  


Answer- Scleroblasts 


Que- Which one is the basic unit of classification 

a. Division  

b. Family  

c. Class  

d. Species  


Answer- Species 


Que- Which one of the following phylum is characterised by absence of true coelom 

a. Nematoda  

b. Echinodermata  

c. Mollusca  

d. Annelida  


Answer- Nematoda 


Que- The food material prepared in the plants is transported to the various organs by which of the following? 

a. Xylem 

b. Phloem 

c. Cortex 

d. Cambium 


Answer- Phloem


Que- Cells with similar markers stick together and function as 

a. Organs 

b. Tissues 

c. Systems 

d. Organisms 


Answer- Tissues


Que- Xylem tissue is mainly concered with the 

a. Photosynthesis of plants 

b. Transport of water and mineral nutrients in plants 

c. Storage of prepared foods in plants 

d. Transport of enzymes in plants 


Answer- Storage of prepared foods in plants


Que- The major constituent of connective tissue is 

a. Lipid 

b. Carbohydrate 

c. Cholesterol 

d. Collagen 


Answer- Collagen


Que- The connective tissue that connects a muscle to a bone is 

a. Cartilage 

b. Ligament 

c. Tendon 

d. Interstitial fluid 


Answer- Tendon


Que- Which vitamin is necessary for blood clotting 

a. Vitamin A  

b. Vitamin C  

c. Vitamin K  

d. Vitamin D  


Answer- Vitamin K 


Que- Most of the enzymes are 

a. Fats  

b. Carbohydrates  

c. Proteins  

d. Minerals  


Answer- Proteins 


Que- The disease Rickets is caused by the deficiency of 

a. Vitamin A  

b. Vitamin B  

c. Vitamin C  

d. Vitamin D  


Answer- Vitamin D 


Que- Which vitamin is also act as coenzymes 

a. K  

b. E  

c. B12  

d. None of the Above  


Answer- B12 


Que- Amoeba is ________ in nutrition 

a. Holozoic  

b. Holophytic  

c. Saprozoic  

d. Myxotrophic  


Answer- Holozoic 


Que- During which phase or phase of cell division,the morphology of the chromosomes is best studies? 

a. Telophase,anaphase 

b. Prohase,anaphase 

c. Anaphase,metaphase 

d. None of the above 


Answer- Anaphase,metaphase


Que- Metaphase is followed by the next phase of mitosis called 

a. Anaphase 

b. Prophase 

c. Interphase 

d. Anaphase 


Answer- Anaphase


Que- It is a the process which converts a single celled zygote into a great number of cells,which then differentiate into tissues. 

a. Mitosis 

b. Meiosis 

c. Fractionation 

d. Regenration 


Answer- Mitosis


Que- Which division is responsible for the continuity of hereditary informations? 

a. Mitosis 

b. Meiosis 

c. Regeneration 

d. All of the above 


Answer- Mitosis


Que- The type of division which occurs in somatic cells is known as 

a. Mitosis 

b. Meiosis 

c. Binary Fission 

d. Regeration 


Answer- Mitosis


Que- Which of the following organelles contain enzymes that have digestive action 

a. Plastids  

b. Lysosomes  

c. Ribosomes  

d. Polysomes  


Answer- Lysosomes 


Que- They are also concerned with the formation and storage of certain compounds secreted by the cell. 

a. Lysosomes 

b. Golgi Bodies 

c. Centriole 

d. None of the above 


Answer- Golgi Bodies


Que- The total number of pairs of Peripheral nerves in man are 

a. 41 

b. 42 

c. 43 

d. 44 


Answer- 43


Que- Medulla oblongata is a part of which of the following? 

a. Heart 

b. Brain 

c. Lungs 

d. Stomach 


Answer- Brain


Que- Acetylcholine is 

a. Toxin 

b. Vitamin 

c. Enzyme 

d. Chemical transmitter 


Answer- Chemical transmitter


Que- The pair of spinal nerves in main are 

a. 30 

b. 31 

c. 32 

d. 33 


Answer- 31


Que- When the diaphragm and external intercostal muscles contract, 

a. The volume of the thorax decreases 

b. The volume of the lungs decreases 

c. The volume of the thorax increases 

d. The lungs shrink 


Answer- The volume of the thorax increases


Que- Blood leaving lung, is rich in 

a. Oxygen 

b. Carbondioxide 

c. Haemoglobin 

d. Number of RBC 


Answer- Oxygen


Que- The organs protected by the thoracic cage include the 

a. Lungs 

b. Heart 

c. Both a & b 

d. None of the above 


Answer- Both a & b

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