Biology MCQ (Multiple Choice Questions) - SchoolingAxis

Biology MCQ (Multiple Choice Questions)

 Que- Who formulated Cell theory? 

a. Schwan 

b. M.J.Schleiden 

c. Henri Dutrochet 

d. Both Schawn and M.J.Scheilden 

Answer- Both Schawn and M.J.Scheilden

Que- Which of the following are known as the suicide bags of cells? 

a. Lysosomes 

b. Golgi bodies 

c. Nucleoli 

d. Ribosomes 

Answer- Lysosomes

Que- Which feature do Prokaryotic and Eukaryotic cells share 

a. Nucleus 

b. DNA 

c. Nuclear membrane 

d. Membrane bound Organelles 

Answer- DNA

Que- Which of the following contain enzymes for cellular respiration ? 

a. Dictyosomes 

b. Endoplasmic reticula 

c. Lysosomes 

d. Mitochondria 

Answer- Mitochondria

Que- The smallest unit that is capable of carrying out life functions is known as 

a. Tissue  

b. Cell  

c. Blood  

d. DNA  

Answer- Cell 

Que- Fusion of two gametes called 

a. Fertilization 

b. Development 

c. Regeneration 

d. Pollination 

Answer- Fertilization

Que- Flowers in which polllination takes place by insect their pollen grains are ________  

a. Smooth and dry 

b. Rough and sticky 

c. Rough and dry 

d. Large in Size 

Answer- Rough and sticky

Que- Ornithology is the study of 

a. Mammal 

b. Birds 

c. Fishes 

d. Bat 

Answer- Birds

Que- Pollination is best defined as 

a. Growth of pollen tube in ovule 

b. Visiting flowers by insects 

c. Germination of pollen grains 

d. Transfer of pollen from anther to stigma 

Answer- Transfer of pollen from anther to stigma

Que- Self pollination will lead to 

a. Inbreeding 

b. Over breeding 

c. Outbreeding 

d. Rare breeding 

Answer- Inbreeding

Que- Which one of the following is not a genetic disorder ? 

a. Colour blindness 

b. Down's syndrome 

c. Haemophilia 

d. Xerophthalmia 

Answer- Xerophthalmia

Que- Who is known as Father of Modern Genetics 

a. Charles Darwin  

b. Louis Pasteur  

c. Gregor Mendel  

d. Jean Baptiste Lamarck  

Answer- Gregor Mendel 

Que- Tracheids are conducting cells of which tissue? 

a. Xylem 

b. Phloem 

c. Cambium 

d. None of these 

Answer- Xylem

Que- The main function of the inner bark of a woody plant is to 

a. Transport minerals and water from the roots to the leaves 

b. Act as a membrane impermeable to water and gas 

c. Transport food from the leaves to the other parts of the plant 

d. Protect the plant from herbivorous animals 

Answer- Transport food from the leaves to the other parts of the plant

Que- Which one of the following tissues is responsible for increase of girth in the stem of a plant? 

a. Tracheid 

b. Pericycle 

c. Intercalary meristem 

d. Lateral meristem 

Answer- Lateral meristem

Que- Which of the following transports water from the roots of the plant to its leaves? 

a. Xylem 

b. Phloem 

c. Both xylem and phloem 

d. Cortex 

Answer- Both xylem and phloem

Que- The water and mineral salts are transported to the various organs by which of the following? 

a. Xylem 

b. Phloem 

c. Cortex 

d. Cambium 

Answer- Xylem

Que- What prevents food from entering the windpipe? 

a. Epiglottis 

b. Pharynx 

c. Trachea 

d. Larynx 

Answer- Epiglottis

Que- Which of the following is true of enzymes? 

a. Enzymes lowers the activation energy for the chemical reaction 

b. Enzymes speed up the rate of a chemical reaction 

c. Both A & B 

d. Neither A nor B 

Answer- Both A & B

Que- They substances,which assist enzymes act,are called 

a. Diastase 

b. Substrates 

c. Co-enzymes 

d. None of the above 

Answer- Substrates

Que- Biological catalysis in living organisms are known as 

a. Hormones 

b. Vitamins 

c. Steroids 

d. Enzymes 

Answer- Enzymes

Que- Which of the following is not a function of saliva? 

a. Contains fluoride to harden the tooth enamel 

b. Moistens food and helps stick it together to make it easier to swallow 

c. Begins the chemical breakdown of starches 

d. Helps clean the mouth 

Answer- Contains fluoride to harden the tooth enamel

Que- Pollen grains in plants are produced in 

a. roots 

b. leaves 

c. flower 

d. stem 

Answer- flower

Que- Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false? 

a. By cyanobacteria 

b. By electrical discharges in the atmosphere 

c. By industrially synthesised fertilizer 

d. By denitrification 

Answer- By denitrification

Que- Ptyalin is an enzyme produced in the 

a. salivary glands 

b. pituitary glands 

c. thyroid glands 

d. pancreas 

Answer- salivary glands

Que- Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes 

a. tetanus 

b. influenza 

c. cholera 

d. typhoid 

Answer- cholera

Que- The colour of Hemoglobin is 

a. Red  

b. Yellow  

c. White  

d. Colorless  

Answer- Red 

Que- The elastic vessels which transport blood to the heart is known as 

a. Arteries  

b. Veins  

c. Capillaries  

d. None of the above  

Answer- Veins 

Que- The elastic vessels which transport blood from the heart is known as 

a. Arteries  

b. Sinusoids  

c. Capillaries  

d. None of the above  

Answer- Arteries 

Que- White blood cell act 

a. As a defence against infection  

b. As a source of energy  

c. For clotting blood  

d. As a medium for oxygen transport from lung to tissues  

Answer- As a defence against infection 

Que- Protein synthesis in a bacterial cell is done by 

a. Centrioles  

b. Flagella  

c. Thylakoids  

d. Ribosomes  

Answer- Ribosomes 

Que- Which one is the first organelle to be discovered 

a. Chloroplast  

b. Nucleus  

c. Vacuole  

d. Lysosome  

Answer- Nucleus 

Que- The cell theory was proposed by 

a. Hook  

b. Schleiden  

c. Oken  

d. Darwin  

Answer- Hook 

Que- The Powerhouse of the cell is 

a. Chloroplast  

b. Nucleus  

c. Endoplasmic reticulum  

d. Mitochondria  

Answer- Mitochondria 

Que- Which of the following is an example of parasitism? 

a. Leeches consume blood of their host 

b. Ticks that live on dogs 

c. Aphid insects eat the sap of the host plant 

d. All of the above 

Answer- All of the above

Que- ________ is the interaction in which one species benefits and the other is neither harmed nor benefited. 

a. Predation 

b. Commensalism 

c. Competition 

d. Parasitism 

Answer- Commensalism

Que- Increased RBC's in the blood leads to a condition called 

a. Anemia  

b. Haemophilia  

c. Polycthemia  

d. Leukaemia  

Answer- Polycthemia 

Que- Platelet is also known as 

a. Leucocytes  

b. Erythrocytes  

c. Thrombocytes  

d. Phagocytosis  

Answer- Thrombocytes 

Que- Antibodies are produced by 

a. Lymphocytes  

b. Plasma cells  

c. RBCs  

d. T-cells  

Answer- Plasma cells 

Que- Oxygenated blood is carried from the lungs to the ________ by the pulmonary veins 

a. Right ventricle  

b. Left ventricle  

c. Right auricle  

d. Left auricle  

Answer- Left auricle 

Que- Which one is the largest cells in white blood corpuscles 

a. Lymphocytes  

b. Basophils  

c. Monoscytes  

d. Neutrophils  

Answer- Monoscytes 

Que- The term biology is derived from the language 

a. French 

b. Latin 

c. Purthgali 

d. Greek 

Answer- Greek

Que- Which structure is common to plant and animal cells? 

a. Centriole 

b. Chloroplast 

c. Central Vacuole 

d. Mitochondria 

Answer- Mitochondria

Que- Which observation proves that a cell is a eukaryote? 

a. It contains DNA 

b. It contains ribosomes 

c. It has a cell membrane 

d. It has DNA inside a nucleus 

Answer- It has DNA inside a nucleus

Que- Physical basis of life is 

a. Cytoplasm 

b. Neucleoplasm 

c. Protoplasm 

d. Haloplasm 

Answer- Protoplasm

Que- Where does cellular respiration take place in the cell? 

a. Cytoplasm 

b. Mitochodria 

c. Ribosomes 

d. Chromosomes 

Answer- Mitochodria

Que- Diphtheria disease is caused by  

a. Corynebacterium diphtheria 

b. Diplococus pneumo 

c. Pasteurella pestis 

d. Streptomyces species 

Answer- Corynebacterium diphtheria

Que- Which of the following disease is non-communicable in nature? 

a. Cholera 

b. Chicken-pox 

c. Tuberculosis 

d. Cancer 

Answer- Cancer

Que- When a disease break out and spread from one place to another affecting large number of peoples it is called 

a. Edemic 

b. Epidemic 

c. Endemic 

d. Sporadic 

Answer- Epidemic

Que- Which of the following disease is caused by female Anopheles mosquito? 

a. Chicken Pox 

b. Malaria 

c. Black Fever 

d. Cholera 

Answer- Malaria

Que- Which one among the following water-borne diseases is not caused by a bacteria ? 

a. Cholera 

b. Typhoid 

c. Bacillary dysentery 

d. Hepatitis A 

Answer- Hepatitis A

Que- Such plants which are adapted to survival under conditions a limited supply of water in its habitat are known as 

a. Hydrophytes 

b. Saprophytes 

c. Xerophytes 

d. Pteridophytes 

Answer- Xerophytes

Que- Azolla is a 

a. Algae 

b. Fungi 

c. Bryophyta 

d. Aqueous fern 

Answer- Aqueous fern

Que- Bamboo is classified as 

a. Tree 

b. Grass 

c. Shrub 

d. Herb 

Answer- Grass

Que- Bios means  

a. Study 

b. Life 

c. Fact 

d. True 

Answer- Life

Que- In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen? 

a. Annelida 

b. Chordata 

c. Arthropods 

d. Echinodermata 

Answer- Arthropods

Que- Source of infection in diseases like Tuberculosis, Mumps and Whooping cough is 

a. Direct contact 

b. Droplets of saliva 

c. Carrier organism 

d. A vector 

Answer- Droplets of saliva

Que- Anopheles mosquito carries Plasmodium which causes malaria in  

a. Humans 

b. Animals 

c. Sparrows 

d. All of the above 

Answer- Humans

Que- Anopheles mosquito carries Plasmodium which causes malaria in  

a. Humans 

b. Animals 

c. Sparrows 

d. All of the above 

Answer- Humans

Que- Which is called as triple vaccine? 

a. BCG  

b. DTP  

c. TAB  

d. All of the above  

Answer- DTP 

Que- Which of the following is an Abiotic factor? 

a. Plants 

b. Water 

c. Consumers 

d. Animals 

Answer- Water

Que- All insects have how many parts of legs? 

a. 2 

b. 3 

c. 4 

d. 6 

Answer- 3

Que- All living things except bacteria and blue green algae are termed as 

a. Prokayotes 

b. Lsosmes 

c. Eukaryotes 

d. None of the above 

Answer- Eukaryotes

Que- There are how many species of fungi? 

a. 80 species 

b. 800 species 

c. 8,000 species 

d. 80,000 species 

Answer- 80,000 species

Que- Which of the following is true of annelids? 

a. They have an open circulatory system 

b. They have a nerve net 

c. They perform gas exchange across their skin 

d. They have pseudocoeloms 

Answer- They perform gas exchange across their skin

Que- Which of the following has the largest number of chromosomes? 

a. Human beings 

b. Pteridophytes 

c. Elephants 

d. Bryophytes 

Answer- Pteridophytes

Que- Which of the following micro-organism causes diseases like polio and chicken pox? 

a. Bacteria 

b. Protozoa 

c. Algae 

d. Virus 

Answer- Virus

Que- What kingdom does Amoeba belong to 

a. Plantae 

b. Protista 

c. Monera 

d. Prokaryotae 

Answer- Protista

Que- Which bacteria cause the greatest harm in the food industry? 

a. Recycling 

b. Digestive 

c. Fermenting 

d. Pathogenic 

Answer- Pathogenic

Que- Bacteria divides by 

a. Binary Fission 

b. Spirilla 

c. RNA 

d. Fusion 

Answer- Binary Fission

Que- Important plant diseases like fire-blight and crown all are caused by 

a. Viruses 

b. Bacteria 

c. Fungi 

d. Protozoans 

Answer- Bacteria

Que- Study of nose and alfactory organs is called 

a. Radiology 

b. Rhinology 

c. Radiography 

d. None of these 

Answer- Rhinology

Que- The size of the pupil is controlled by the 

a. Retina 

b. Iris 

c. Cornea 

d. Lens 

Answer- Iris

Que- Bacteria are classified in the kingdom 

a. Animalia  

b. Fungi  

c. Monera  

d. Protista  

Answer- Monera 

Que- Which of the following animals shows radial symmetry 

a. Frog  

b. Pila  

c. Star Fish  

d. Fish  

Answer- Star Fish 

Que- Who introduced the ""binomial nomenclature"" to name organisms 

a. C. Darwin  

b. G. Mendel  

c. E. Mayer  

d. C. Linnaeus  

Answer- C. Linnaeus 

Que- Aestivation is seen in 

a. Amphibians  

b. Chimpanzee  

c. Salmon  

d. Squirrels  

Answer- Amphibians 

Que- Which one is the largest animal phylum 

a. Arthropod  

b. Mollusca  

c. Chordata  

d. Coelomates  

Answer- Arthropod 

Que- A typical chromosome has two parts a centrifuge and ________ 

a. Blastomeres 

b. Chromosomes 

c. Centrosomes 

d. Ribosomes 

Answer- Chromosomes

Que- How does a Unicellular Organism reproduce? 

a. Cell division 

b. Cell reproduction 

c. Cell synthesis 

d. Fragmentation 

Answer- Cell division

Que- Healing of wounds is dependent upon the ________ division of underlying cells 

a. Meiosis 

b. Mitotic 

c. Budding 

d. None of the above 

Answer- Mitotic

Que- It is formed by a repeating nucleosome units ,which are closely attached to each other to a continuous fibre. 

a. Chromatin 

b. Centromere 

c. Chromosome 

d. DNA 

Answer- Chromatin

Que- It is the site of chromosomes attachment to the fiber of spindle. 

a. Chromomere 

b. Centromere 

c. Centrosme 

d. Blastomere 

Answer- Centromere

Que- ________ helps the eye to adjust the focal length of the lens. 

a. Lens 

b. Ciliary body 

c. Retina 

d. Entire eye ball 

Answer- Ciliary body

Que- Eustachian Tube is located in which part of human body? 

a. Nose 

b. Ear 

c. Eyes 

d. Throat 

Answer- Ear

Que- Glomerulus and Bowman's capsule constitute 

a. Blood vessels 

b. Malpighian body 

c. Green gland 

d. Malpighian tubule 

Answer- Malpighian tubule

Que- The kidneys are stimulated to produce renin 

a. When the pH of the urine decreases 

b. When the specific gravity of urine rises above 1.10 

c. When the peritubular capillaries are dilated 

d. By a decrease in the blood pressure 

Answer- By a decrease in the blood pressure

Que- In mammals, an important role of excretion is played by________  

a. Large intestine 

b. Kidneys 

c. Lungs 

d. Liver 

Answer- Kidneys

Que- Salts and sugars work to preserve foods by creating a 

a. Hypertonic environment 

b. Lower pH 

c. Depletion of nutrients 

d. Lower osmotic pressure 

Answer- Hypertonic environment

Que- Movement of cell against concentration gradient is called 

a. Active transport 

b. Diffusion 

c. Osmosis 

d. Passive transport 

Answer- Active transport

Que- Which one among the following Indian scientists proposed a theory for long distance transport of water in plants ? 

a. J.C. Bose 

b. Birbal Sahni 

c. P. Maheshwari 

d. N.S. Parihar 

Answer- N.S. Parihar

Que- The movement of materials across the cell membrane with the help of biological energy provided by ATP is called 

a. Active Transport 

b. Passive Transport 

c. Endocytosis 

d. Fractionation 

Answer- Active Transport

Que- Which process requires no energy from the cell? 

a. Osmosis 

b. Diffusion 

c. Both A & B 

d. None of the above 

Answer- Both A & B

Que- What is the effect of oversecretion of hormone from pituitary gland? 

a. Increase growth in length 

b. Unbalanced development of body 

c. Body became curve 

d. None of the above 

Answer- Increase growth in length

Que- Which of the following is not a gland? 

a. Thyroid 

b. Gastrine 

c. Liver 

d. Pancreas 

Answer- Gastrine

Que- Oxytocin hormone is secreted by gland 

a. Pituitary 

b. Pineal 

c. Adrenal 

d. Ovary 

Answer- Pituitary

Que- Enlargment of _______ gland takes place due to deficiency of iodine 

a. Thyroid 

b. Pituitary 

c. Adrenal 

d. Parotid 

Answer- Thyroid

Que- Pepsin is a 

a. Hormone 

b. Enzyme 

c. Vitamin 

d. Mineral 

Answer- Enzyme

Que- The hormone which stimulates the stomach for the production of digestive juice is 

a. Gastrin 

b. Trysin 

c. Secretin 

d. Pepsin 

Answer- Gastrin

Que- Most absorption of nutrients occurs in the 

a. Stomach 

b. Liver 

c. Large intestine 

d. Small intestine 

Answer- Small intestine

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