Priyanka Tyagi Biology. We covered all the Priyanka Tyagi Biology MCQs in this post for free so that you can practice well for the exam.
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Priyanka Tyagi Biology Objective for Students
The corpus callosum is absent in which one among the following animals?
(a) Echidna
(b) Rabbit
(c) Dog
(d) Whale
Option a – Echidna
Which one of the following pairs of animals is warm-blooded?
(a) Crocodile and ostrich
(b) Hagfish and dogfish
(c) Tortoise and ostrich
(d) Peacock and camel
Option d – Peacock and camel
Which one of these belongs to the family in which the Panda belongs?
(a) Bear
(b) Cat
(c) Dog
(d) Rabbit
Option a – Bear
The marine animal called dugong, which is vulnerable to extinction, is a/an:
(a) Amphibian
(b) Bony fish
(c) Shark
(d) Mammal
Option d – Mammal
Which of the following is not a mammal?
(a) Fishes
(b) Bat
(c) Whale
(d) Man
Option a – Fishes
Dolphins are classified under:
(a) Pisces
(b) Amphibian
(c) Reptiles
(d) Mammal
Option d – Mammal
The number of chambers found in the heart of a whale?
(a) 2
(b) 3
(c) 4
(d) 1
Option c – 4
Which one among the following statements is not true for mammals?
(a) They possess hair on the body.
(b) Some of them lay eggs.
(c) Their heart is three-chambered.
(d) Some are aquatic.
Option c – Their heart is three-chambered
Among the following, which one lays eggs and does not produce young ones directly?
(a) Echidna
(b) Kangaroo
(c) Porcupine
(d) Whale
Option a – Echidna
In the context of Indian wildlife, the flying fox is a:
(a) Bat
(b) Kite
(c) Stork
(d) Vulture
Option a – Bat
Only male frogs produce croaking sounds because:
(a) Female frogs have no larynx.
(b) Female frogs have a larynx but no vocal cords.
(c) Male frogs have three pairs of vocal cords.
(d) Male frogs can magnify their voice with the help of a soundbox.
Option a – Female frogs have no larynx
Which of the following creatures is oviparous?
(a) Frog
(b) Rabbit
(c) Mouse
(d) Squirrel
Option a – Frog
The release of which one of the following in ponds and wells helps in controlling mosquitoes?
(a) Crab
(b) Dogfish
(c) Gambusia fish
(d) Snail
Option c – Gambusia fish
Which one of the following is a true fish according to the biological system of classification?
(a) Silverfish
(b) Jellyfish
(c) Cuttlefish
(d) Flying fish
Option d – Flying fish
Which statement is incorrect for animals belonging to the class Chondrichthyes?
(a) The presence of placoid scales.
(b) The absence of an air bladder.
(c) The presence of a cartilaginous endoskeleton.
(d) The notochord is persistent only at the larval stage, after which it disappears.
Option d – The notochord is persistent only at the larval stage, after which it disappears
Chondrichthyes is characterized by:
(a) Placoid scales.
(b) Ventral mouth.
(c) Ctenoid scales and a ventral mouth.
(d) Placoid scales and a ventral mouth.
Option d – Placoid scales and a ventral mouth
How many gills are present in Osteichthyes?
(a) 2 pairs
(b) 6 pairs
(c) 5 pairs
(d) 4 pairs
Option d – 4 pairs
Which of the following animals has a three-chambered heart?
(a) Scoliodon
(b) Salamander
(c) Pigeon
(d) Human being
Option b – Salamander
The snake that makes nests is:
(a) Chain viper
(b) King Cobra
(c) Krait
(d) Saw-scaled viper
Option b – King Cobra
The poisonous fangs of a snake are modified forms of:
(a) Mandibular teeth
(b) Palatine teeth
(c) Canine teeth
(d) Maxillary teeth
Option d – Maxillary teeth
Crocodiles have a chambered heart. How many chambers?
(a) Two
(b) Four
(c) Three
(d) Single
Option b – Four
Which one of the following snakes primarily consumes other snakes as part of its diet?
(a) Krait
(b) Russell’s viper
(c) Rattlesnake
(d) King Cobra
Option d – King Cobra
Jacobson’s organs, concerned with smell, are present in which class of animals?
(a) Amphibia
(b) Reptilia
(c) Pisces
(d) Aves
Option b – Reptilia
Wall lizards are able to crawl over vertical walls and ceilings with the help of:
(a) Sucker found in the mouth
(b) Claw present on their digits
(c) Adhesive pad found on their digits
(d) The ventral side of the body is adhesive
Option c – Adhesive pad found on their digits
Mammals that have the capacity to distinguish color:
(a) Man and dog
(b) Man, dog, and monkey
(c) All mammals
(d) Man and monkey
Option c – All mammals
Which one of the following animals is cold-blooded?
(a) Dolphin
(b) Shark
(c) Whale
(d) Porpoise
Option b – Shark
Which among the following animals excretes solid urine?
(a) Kangaroo rat
(b) Giraffe
(c) Squirrel
(d) Crow
Option a – Kangaroo rat
What is the distinctive characteristic of marsupials?
(a) They lay eggs.
(b) They hibernate in winter.
(c) They carry young ones in pouches.
(d) They migrate from one place to another.
Option c – They carry young ones in pouches
In which of the following animals are hooves not found?
(a) Deer
(b) Jackal
(c) Zebra
(d) Horse
Option b – Jackal
Which one of the following organs is the main respiratory organ of a whale?
(a) Integuments
(b) Gills
(c) Lungs
(d) Trachea
Option c – Lungs
Which of the following is monogamous?
(a) Wolf
(b) Walrus
(c) Seal
(d) Deer
Option d – Deer
Two Kingdom system of classification was based on:
(a) Embryology
(b) Morphology
(c) Cytology
(d) Anatomy
Option b – Morphology
Who had written Systema Naturae?
(a) Ernst Mayr
(b) Carolus Linnaeus
(c) RH Whittaker
(d) WM Stanley
Option b – Carolus Linnaeus
Who among the following popularized the use of embryological characters in taxonomy?
(a) Carl Linnaeus
(b) Panchanan Maheshwari
(c) Birbal Sahni
(d) Bentham and Hooker
Option b – Panchanan Maheshwari
Which of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?
(a) Phylum-Class-Order-Family-Genus
(b) Phylum-Class-Family-Order-Genus
(c) Family-Order-Class-Species-Genus
(d) Class-Family-Order-Species-Genus
Option a – Phylum-Class-Order-Family-Genus
Which of the following is the correct sequence according to an increase in diversity amongst the organisms?
(a) Monera – Fungi – Protista – Plantae
(b) Monera – Fungi – Plantae – Protista
(c) Monera – Protista – Fungi – Plantae
(d) Monera – Plantae – Fungi – Protista
Option c – Monera – Protista – Fungi – Plantae
On what basis did Greek thinker Aristotle classify the animals for the first time?
(a) Habitat
(b) Size
(c) Locomotion
(d) Food
Option a – Habitat
In the names Mangifera Indica (mango), Solanum tuberosum (potato), and Panthera leo (lion), the terms Mangifera, Solanum, and Panthera represent the higher level of:
(a) Taxon
(b) Taxonomic Hierarchy
(c) Specific Epithet
(d) Binomial Nomenclature
Option a – Taxon
Standardizing the naming of living organisms is known as:
(a) Classification
(b) Identification
(c) Nomenclature
(d) Both (a) and (c)
Option c – Nomenclature
The binomial nomenclature system was given by:
(a) Carol Linnaeus
(b) Carolus Linnaeus
(c) Aristotle
(d) Whittaker
Option b – Carolus Linnaeus
According to binomial nomenclature, the scientific name of an organism consists of:
(a) Generic name
(b) Specific epithet
(c) Both (a) and (b)
(d) None of these
Option c – Both (a) and (b)
Who proposed two kingdom systems of classification and named kingdoms as Plantae and Animalia?
(a) Carolus Linnaeus
(b) RH Whittaker
(c) Carl Woese
(d) Herbert Copeland
Option a – Carolus Linnaeus
Virus contains:
(a) Proteins
(b) Genetic material
(c) Both (a) and (b)
(d) None of these
Option c – Both (a) and (b)
A bacteriophage is a:
(a) Bacterium with a tail
(b) Newly formed bacterium
(c) Bacterium infecting virus
(d) Virus infecting bacterium
Option d – Virus infecting bacterium
Viruses and viroids are non-cellular organisms, which are not characterized in the classification of:
(a) Whittaker
(b) Aristotle
(c) Linnaeus
(d) Watson
Option a – Whittaker
Which one of the following statements regarding viruses is not true?
(a) Viruses need living cells to reproduce.
(b) All viruses are parasites.
(c) Viruses can synthesize their food through photosynthesis.
(d) Viruses are similar to chemical substances outside the host.
Option c – Viruses can synthesize their food through photosynthesis
The body of a fungus is made up of a number of elongated, tubular filaments called:
(a) Hyphae
(b) Woronin bodies
(c) Mycelium
(d) Thallus
Option a – Hyphae
Which one of the following is wrong for fungi?
(a) They are eukaryotic.
(b) All fungi possess a purely cellulosic cell wall.
(c) They are heterotrophic.
(d) They are both unicellular and multicellular
Option b – All fungi possess a purely cellulosic cell wall
Which of the following is a non-hyphal unicellular fungus?
(a) Yeast
(b) Puccinia
(c) Ustilago
(d) Alternaria
Option a – Yeast
Lichens are mutualistic and symbiotic associations between:
(a) Mycobiont and virus
(b) Mycobiont and phycobiont
(c) Mycobiont and root of higher plants
(d) Mycobiont and mosses
Option b – Mycobiont and phycobiont
Mycorrhizae are mutualistic and symbiotic associations between:
(a) Fungi and vascular plants.
(b) Fungi and non-vascular plants.
(c) Fungi and roots of higher plants.
(d) Fungi and bryophytes.
Option c – Fungi and roots of higher plants
Improper handling and storage of cereal grains and oil seeds result in the production of toxins known as aflatoxins, which are not generally destroyed by normal cooking processes. Aflatoxins are produced by:
(a) Bacteria
(b) Protozoa
(c) Moulds
(d) Viruses
Option c – Moulds
Yeast is used in bakery in the preparation of bread because it:
(a) Makes bread hard.
(b) Makes bread soft and spongy.
(c) Increases the food value of bread.
(d) Keeps the bread fresh.
Option b – Makes bread soft and spongy
The well-known antibiotic penicillin is obtained from this agent group:
(a) Algae
(b) Fungi
(c) Lichen
(d) Angiosperm
Option b – Fungi
Sphagnum is used as a packing material for transporting living plants because of its:
(a) Acidic nature, it does not undergo decay.
(b) Water-holding capacity.
(c) Water-absorbing capacity
(d) Both (a) and (b)
Option d – Both (a) and (b)
Plants show…………in their life cycle.
(a) Only a sexual phase
(b) Only an asexual phase
(c) Alternation of generation
(d) None of the above
Option c – Alternation of generation
Which one of the following statements about the classification of plants is correct?
(a) Thallophytes have a well-differentiated body design.
(b) Funaria is a fungus.
(c) All Pteridophytes are phanerogams.
(d) Vascular system is not found among Bryophytes.
Option d – Vascular system is not found among Bryophytes
Which botanist is credited with creating one of the first widely used natural systems of plant classification?
(a) August Wilhelm Eichler
(b) Robert Brown
(c) Joseph Dalton Hooker
(d) Joseph Banks
Option a – August Wilhelm Eichler
Which of the following statements about plants is false?
(a) Plants are heterotrophs.
(b) Plants show alternation of generation during their life cycle.
(c) Plants are multicellular eukaryotes.
(d) Plants are non-motile.
Option a – Plants are heterotrophs
Marsilea, fern, and horsetail are examples of which one of the following plant groups?
(a) Pteridophyta
(b) Bryophyta
(c) Gymnosperms
(d) Angiosperms
Option a – Pteridophyta
In the plant kingdom, ferns and fern allies belong to which group?
(a) Gymnosperms
(b) Thallophyta
(c) Bryophyta
(d) Pteridophyta
Option d – Pteridophyta
Mosses and ferns are found in moist and shady places because both:
(a) Require the presence of water for fertilization.
(b) Do not need sunlight for photosynthesis.
(c) Depend on microorganisms for nutrition, which can survive only at low temperatures.
(d) Cannot compete with sun-loving plants.
Option a – Require the presence of water for fertilization
Horsetails and ferns belong to:
(a) Gymnosperms
(b) Bryophytes
(c) Mosses
(d) Pteridophytes
Option d – Pteridophytes
In pteridophytes, the sporophytes consist of leaf-like appendages called:
(a) Megaphylls
(b) Sporophylls
(c) Thalli
(d) Sporangia
Option b – Sporophylls
The leaves in pteridophytes are small, as in:
(a) Volvox
(b) Marsilia
(c) Selaginella
(d) Azolla
Option c – Selaginella
Which of the following plant groups is considered the first terrestrial plants to possess vascular tissues xylem and phloem?
(a) Bryophytes
(b) Pteridophytes
(c) Gymnosperms
(d) Angiosperms
Option b – Pteridophytes
Pteridophytes are also known as:
(a) Cryptogams
(b) Vascular cryptogams
(c) Amphibious plants
(d) Phanerogams
Option b – Vascular cryptogams
The nature of the stele in primitive vascular plants was:
(a) Protostele
(b) Siphonostele
(c) Dictyostele
(d) Atactostele
Option a – Protostele
Which one of the following organisms has vascular tissues?
(a) Cladophora
(b) Penicillium
(c) Marsilea
(d) Anabaena
Option c – Marsilea
In angiosperms, seeds are enclosed by:
(a) Flowers
(b) Fruits
(c) Ovule
(d) Perianth
Option b – Fruits
Angiosperms differ from gymnosperms in having:
(a) Fruits
(b) Cotyledons
(c) Tracheids
(d) Broad leaves
Option a – Fruits
The smallest flowering plant is:
(a) Ginkgo
(b) Wolffia
(c) Tulip
(d) Sweet bay
Option b – Wolffia
The tallest flowering tree species is:
(a) Pinus
(b) Cedrus
(c) Sequoia
(d) Eucalyptus
Option d – Eucalyptus
Conifers are adapted to tolerate extreme environmental conditions because of:
(a) Broad hardy leaves
(b) Superficial stomata
(c) Thick cuticle
(d) The presence of vessels
Option c – Thick cuticle
Angiosperms are also called:
(a) Seedless plants
(b) Fruitless plants
(c) Flowering plants
(d) All of the above
Option c – Flowering plants
In angiosperms, the pollen grains and ovules are produced in a special structure called:
(a) Fruit
(b) Seed
(c) Flower
(d) Lamina
Option c – Flower
Organ system level of organization is observed in the:
(a) Chordates
(b) Annelids
(c) Mollusks
(d) All of these
Option d – All of these
The body cavity lined by mesoderm is called:
(a) Coelenteron
(b) Pseudocoel
(c) Coelom
(d) Blastocoel
Option c – Coelom
The response to external stimulus is maximally quicker and more precise in which of the following symmetries?
(a) Radial
(b) Bilateral
(c) Spherical
(d) Biradial
Option b – Bilateral
The notochord is derived from which of the following layers?
(a) Ectoderm
(b) Mesoderm
(c) Endoderm
(d) Placoderm
Option b – Mesoderm
The body having a meshwork of cells, internal cavities lined with food-filtering flagellated cells, and indirect development are characteristics of which phylum?
(a) Coelenterata
(b) Porifera
(c) Mollusca
(d) Protozoa
Option b – Porifera
In Phylum Porifera, the opening through which water leaves the spongocoel is called:
(a) Ostia
(b) Ommatidia
(c) Osculum
(d) Choanocytes
Option c – Osculum
Which one of the following is not a poriferan?
(a) Sycon
(b) Spirulina
(c) Euspongia
(d) Spongilla
Option b – Spirulina
Cells that are peculiar to Phylum Porifera are:
(a) Chimeras
(b) Chondrocytes
(c) Dendrocytes
(d) Choanocytes
Option d – Choanocytes
The skeletons of animals belonging to Phylum Porifera are made up of:
(a) Spicules
(b) Spiracles
(c) Spines
(d) Spongocytes
Option a – Spicules
Angiospermic plants are divided into:
(a) Dicot
(b) Monocot
(c) Both (a) and (b)
(d) Heartwood plants and sapwood plants
Option c – Both (a) and (b)
Eight nucleated female gametophyte is found in:
(a) Bryophytes
(b) Gymnosperms
(c) Angiosperms
(d) Pteridophytes
Option c – Angiosperms
Double fertilization occurs among:
(a) Algae
(b) Bryophytes
(c) Angiosperms
(d) Gymnosperms
Option c – Angiosperms
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