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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