Class/Course - Class XI

Subject - Biology

Total Number of Question/s - 6057


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  • 1. The Living World - Quiz

    1. The smallest taxon is called
    a) Class
    b) Order
    c) Genus
    d) Species

    2. Which animals is the symbol of the world wildlife fund?
    a) Tiger
    b) Red Panda
    c) Horn Bill
    d) White Bear

  • 2. Biological Classification - Quiz

    1. Thermococcus, methanococcus and methanobacterium exemplify:
    a) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
    b) bacteria that contain a cytoskeleton and ribosomes
    c) archaebacteria that contains protein homologous to eukaryotic core histones
    d) archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is a negatively supercoiled

    2. Select the incorrect statements:
    (a) lower the taxon, more are the characteristics that the members within the taxon share.
    (b) order is the assemblage of genera which exhibit a few similar characters.

    a) A,B and C
    b) B,C and D
    c) A and D
    d) C and D

  • 3. Plant Kingdom - Quiz

    1. Red algae differ from green algae and brown algae in having:
    a) no chlorophyll a
    b) no differenciated cells
    c) no flagellated stage in their life cycles
    d) haemoglobin within their cells

    2. In red algae reserve food material is ________ starch
    a) floridean
    b) flagella
    c) spermatia
    d) none of these

  • 4. Animal Kingdom - Quiz

    1. In some chordates , the notochord is modified as the vertebral column .such animals are called vertebrates which one of the following statements make sense
    a) All chordates are vertebrates but all vertebrates are not chordates
    b) All vertebrates are chordates and all chordates are vertebrates
    c) All vertebrates are chordates but all chordates are not vertebrates
    d) Chordates are not vertebrates and vertemrates are not chordates

    2. Suctorilal mouth occurs in
    a) Butterfly
    b) Leech
    c) Taenia
    d) Cockroach

  • 5. Morphology of Flowering Plants - Quiz

    1. Choose the product that is derived from style and stigma
    a) Saffron
    b) Fenugreek
    c) Asafoetida
    d) Psyllium

    2. The distinct features of fabaceae are
    a) Zygomorphic, diadelphous and monocarpellary
    b) Actinomorphic, monadelphous and monocarpellary
    c) Zygomorphic, monadelphous and pentacarpellary
    d) Zygomorphic, polyadelphous and tricarpellary
    e) Zygomorphic, diadelphous and bicarpellary

  • 6. Anatomy of Flowering Plants - Quiz

    1. Anatomically fairly old dicotledonous root is distinguished from the dicotledonous stem by:
    a) absence of secondary xylem
    b) absence of secondary phloem
    c) presence of cortex
    d) position of protoxylem

    2. Paliasade parenchyma is absent in leaves of:
    a) sorghum
    b) mustard
    c) soybean
    d) gram

  • 7. Structural Organisation in Animals - Quiz

    1. In a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is:
    a) excretory fluid
    b) coelomic fluid
    c) haemolymph
    d) slimy mucus

    2. Germinal epithelium is located in ________ of testes.
    a) seminiferous sacs
    b) vas deferenes
    c) seminiferous tubules.
    d) none of these

  • 8. Cell : The Unit of Life - Quiz

    1. DNA is present in
    or
    Which one of the following has its own DNA
    a) Nucleus only
    b) Mitochondrion only
    c) Chloroplst only
    d) All the above

    2. When the chromosomes has a centromere near to one end of chromosome resulting one shorter and one longer arm. Chromosome is called:
    a) metacentric
    b) submetacentric
    c) acrocentric
    d) telocentric

  • 9. Biomolecules - Quiz

    1. Allosteric modulation is due to the inhibitory action of enzyme by:
    a) competitive inhibition
    b) substrate contration
    c) products of reaction
    d) enzyme concentration

    2. Match the following with correct combination ,
    Column - I  Column - II
    A. Triglycerides  1. Galactose
    B. Lactose 2. Glycerol 
    C. RNA 3. Plamitic acid 
    D. β pleast  4. Uracil
    E. Beewax 5. Secondary structure

    a) A - 4, B - 1, C - 5, D - 2, E - 3
    b) A - 5, B - 1, C - 4, D - 2, E - 3
    c) A - 3, b - 1, C - 4, D - 5, E - 2
    d) A - 2, B - 1, C - 4, D - 5, E - 3
    e) A - 3, B - 1, C - 4, D - 2, E - 5

  • 10. Cell Cycle and Cell Division - Quiz

    1. If a cell has twice as in a normal function cell, it means that the cell:
    a) is preparing to divide
    b) has completed division
    c) has reached the end of the life span
    d) has ceased to function

    2. Chiasmata formation occurs during
    a) Diplotene
    b) Leptotene
    c) Pachytene
    d) Diakinesis

  • 11. Transport in Plants - Quiz

    1. Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure-7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
    a) Movement of water from cell B to A
    b) No monement of water
    c) Equilibrium between the two
    d) Movement of water from cell A to B

    2. What shall be the sequence of events during wilting of a plant
    a) Exosmosis,deplasmolysis,wilting
    b) Endosomosis,plasmolysis,wilting
    c) Exosmosis,plasmolysis,wilting
    d) Endosmosis,deplasmolysis wilting

  • 12. Mineral Nutrition - Quiz

    1. For its actions, nitrogenase requires
    a) High input of energy
    b) Light
    c) Mn2+
    d) Super oxygen redicals

    2. Which group of element in not essential for a normal plant
    a) Potassium, calcium, magnesium
    b) Iron, zinc, manganese, boron
    c) Lead, nickel, iodine, sodium
    d) Magnesium, iron, molybdenum

  • 13. Photosynthesis in Higher Plants - Quiz

    1. The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is
    a) Cytochrome
    b) Iron-sulphur protein
    c) Ferredoxin
    d) Quinone

    2. In photosynthesis energy from light reaction to dark reaction is transferred in the from of
    a) ADP
    b) ATP
    c) RUDP
    d) Chlorophyll

  • 14. Respiration in Plants - Quiz

    1. Energy given by one molecule of ATP is
    a) 7.3 kcal
    b) 721 kcal
    c) 760 kcal
    d) 1000kcal

    2. Different steps in respiration are controlled by
    a) Auxin
    b) Sugar
    c) Enzyme
    d) Kinetin

  • 15. Plant Growth and Development - Quiz

    1. Cell elongation in plants is caused by
    a) Auxin
    b) Gibbberellin
    c) Florigen
    d) Traumatin

    2. Auxins originates at the tip of the stem and controls growth elsewhere. The movement of auxin is largely
    a) Basipetal
    b) Acropetal
    c) Acropetal and basipetal
    d) Centropetal

  • 16. Digestion and Absorption - Quiz

    1. Digestion of starch takes place in
    a) Stomach and duodenum
    b) Buccal cavity and duodenum
    c) Buccal cavity and oesophagus
    d) Duodenum only

    2. Which of the following teeth are lophodont
    a) Incisor and canine
    b) Premolar and molar
    c) Canine and premolar
    d) Premolar and incisor

  • 17. Breathing and Exchange of Gases - Quiz

    1. In lungs, the air is separated from the venous blood through
    a) Squamous epithelium + endothelium of blood vessel
    b) Squamous epithelium + tunica media blood vessel
    c) Transitional epithelium + tunica external blood vessel
    d) None of these

    2. A large proportion of oxygen is left unused the human blood even after its uptakes by the body tissue. This O2
    a) Helps in releasing more O2 to the epithelium tissue
    b) Acts as a reserve during muscular exercise
    c) Raises the pCO2 of blood to 75 mm of Hg
    d) Is enough to keep oxyhaemoglobin saturation at 96%

  • 18. Body Fluids and Circulation - Quiz

    1. The volume of blood each ventricle pumps out during a cardiac cycle is about
    a) 70 ml
    b) 5000ml
    c) 7 l
    d) 1200 ml
    e) 40 ml

    2. Bundle of His is a network of
    a) Nerve fibres found throughout the heart
    b) Muscle fibre distributed throughout the heart walls
    c) Muscle fibres found only in the ventricle wall
    d) Nerve fibres distributed in ventricles

  • 19. Excretory Products and their Elimination - Quiz

    1. Which of the following cycles in liver is mainly responsible for the synthesis of urea
    a) Citruline cycle
    b) Kreb's cycle
    c) Nitrogen cycle
    d) Ornithine cycle

    2. Blacking of urine when exposed to air a metabolic disorder in human beings. This is due to
    a) Phenylalanine
    b) Tyrosine
    c) Valine replacing glutamine
    d) Homohentistic acid
    e) Glutamine replacing valine

  • 20. Locomotion and Movement - Quiz

    1. What is sprain
    a) More pulling of tendon
    b) Less pulling of tendon
    c) More pulling of ligaments
    d) Less pulling of ligament

    2. Scapula is a large triangular flat bone situated in the dorsal part of the thorax between
    a) The second and fifth ribs
    b) The second and seventh ribs
    c) The third and sixth ribs
    d) The third and eighth ribs

  • 21. Neural Control and Coordination - Quiz

    1. In a man, abducens nerve is injured. Which one of the following functions will be affected
    a) Movement of eye ball
    b) Swallowing
    c) Movement of the tongue
    d) Movement of the neck

    2. In a myelinated neuron, two adjacent myelin shealths are separated by gaps called
    a) Nodes of Ranvier
    b) Synaptic deft
    c) Schwann cells
    d) Synptic knob
    e) Neural plate

  • 22. Chemical Coordination and Integration - Quiz

    1. Which hormones stimulates the secretion of milk during sucking of milk by baby
    Or
    Which hormone is responsible for milk ejection after the birth of the baby
    a) Oxytocin
    b) Relaxin
    c) Prolactin
    d) Progesteron

    2. Which disease is caused by the deficiency of thyroxin in the adults
    a) Diabetes incipidus
    b) Diabetes mellitus
    c) Myxoedema
    d) Exopthalmic goitre

  • 23. Monera (Prokaryotes) - Quiz

    1. Which one is the smallest organism capable of autonomous growth and reproduction
    a) Virus
    b) Viroid
    c) Mycoplasma (PPLO)
    d) None of the above

    2. Which one of the following pathogen cause canker disease
    a) Meloidogyne incognita
    b) Anguina tritici
    c) Xanthomonas citri
    d) Pseudomonas rubilineans

  • 24. Protista (Unicellullar Eukaryotes) - Quiz

    1. Which one is correct pairing
    a) Hydra-Anthozoa
    b) Paramecium-Arachnida
    c) Plasmodium-Sporozoa
    d) Amoeba-Ciliata

    2. Characteristic spores of diatoms are
    a) Ascospores
    b) Basidiospores
    c) Auxospores
    d) Zoospores

  • 25. Viruses - Quiz

    1. Bacteriophage is made up of
    a) Carbon and nitrogen
    b) DNA
    c) Nucleoprotein (Nucleic acid+Protein )
    d) Protein only

    2. Plant virus was first crystallized by
    a) Pirie
    b) Bawden
    c) Stanley
    d) Beijerinck

  • 26. Animal Tissues - Quiz

    1. In animals, gametes are derived from
    a) Epithelial tissue
    b) Nervous tissue
    c) Occue singly
    d) None of these

    2. The function of villi in the intestine is
    a) Absorption of food
    b) Increase in the abosrptive surface of food
    c) Control of intestinal movement
    d) Hinderance in the movement of food

  • 27. Morphology in Animals - Quiz

    1. Frogs differ from humans in possessing
    a) Nucleated red blood cells
    b) Thyroid as well as parathyriod
    c) Paired cerebral hemispheres
    d) Hepatic portal system

    2. Columnella auris is a modified
    a) Quadrate
    b) Article
    c) Hyomandibular
    d) Sphenethmoid

  • 28. Fungi (Multicellular Decomposers) - Quiz

    1. Zygospores are formed in
    a) Puccinia
    b) Penicillium
    c) Alternaria
    d) Mucor/Rhizpous

    2. The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of
    a) Rhizopus, a mould
    b) Ascaris, a round worm
    c) Taenia, a tapeworm
    d) Wuchereria, a filarial worm