Medical Sample papers

Diversity of Life Questions and Answers

The Diversity of Life

Ques. The term “phylum” in animal classification was coined by
(a) E. Haeckel
(b) John Ray
(c) G.L. Cuvier
(d) Carolus Linnaeus

Ques. Species is
(a) Specific unit of evolution
(b) Specific unit in the evolutionary history of a race
(c) Specific class of evolution
(d) Not related to evolution

Ques. A unicellular organism often considered connecting link between plants and animals is
(a) Monocystis
(b) Paramecium
(c) Euglena
(d) Entamoeba

Ques. Which kingdom incorporates photoautotrophs, chemoautotrophs and heterotrophs
(a) Monera
(b) Protista
(c) Plantae
(d) Both (b) and (c)


Ques. Binomial nomenclature is
(a) Two words in name of a species
(b) Two names local and specific
(c) Two names of a species
(d) Two phases, asexual and sexual, in the life cycle of a species

Ques. The term species was coined by
(a) Aristotle
(b) Engler
(c) John Ray
(d) Linnaeus

Ques. Modern system of classification classified organisms in ……. Kingdom
(a) One
(b) Two
(c) Four
(d) Five

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Ques. Bacteria were first discovered by
(a) Robert Koch
(b) L. Pasteur
(c) Robert Hooke
(d) A.V. Leeuwenhoek

Ques. Bacterial ribosomes are present
(a) In cytoplasm
(b) On endoplasmic reticulum
(c) On nuclear membrane
(d) On cell wall

Ques. Branched chain lipids occur in the cell membranes of
(a) Archaebacteria
(b) Mycoplasma
(c) Actinomycetes
(d) Streptomyces

Ques. In E. coli when the flagella rotates in a clockwise and anticlockwise direction, the movements are
(a) Jumping and hooping
(b) Running and tumbling
(c) Tumbling and hooping
(d) Hooping and running

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Ques. Fimbriae are
(a) Organs of adhesion
(b) Antigenic
(c) Organs which form conjugation tube through which genetic material is transferred from donor to recipient cell
(d) All the above

Ques. Single filament of Nostoc without mucilage sheath is known as
(a) Hyphae
(b) Colony
(c) Trichome
(d) Mycilium

Ques. Which were the organisms who changed earth’s surface from reducing to the oxidizing
(a) Autotrophs
(b) Heterotrophs
(c) Photoautotrophs
(d) Chemotrophs

Ques. Cyanophyceae has got
(a) Definite nucleus and plastid
(b) No definite nucleus but plastid
(c) Neither definite nucleus nor plastid
(d) Definite nucleus but no plastid

Ques. Sexual reproduction is absent in
(a) Cyanobacteria

(b) Bacteria
(c) Eukaryote
(d) All of the above

Ques. Which is not a cyanobacterium
(a) Lyngbya
(b) Plectonema
(c) Anabaena
(d) Sinorhizobium

Ques. Which of the following statements is right
(a) Fronds are found in bryophytes
(b) Multiciliate sperms are found in angiosperms
(c) Diatoms produce basidiospores
(d) Heterocysts are found in Nostoc

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Ques. In Whittaker’s five kingdom classification, unicellular eukaryotes primarily aquatic and having various cell organelles constitute
(a) Monera
(b) Protista
(c) Animalia
(d) Plantae

Ques. Which of the following unicellular organism has a macronucleus for trophic function and one or more micronuclei for reproduction
(a) Euglena
(b) Amoeba
(c) Paramecium
(d) Trypanosoma

Ques. According to their modes of nutrition, the fungi are classified into
(a) One category
(b) Three categories
(c) Four categories
(d) Six categories

Ques. ‘Torula condition’ occurs in      
(a) Rhizopus
(b) Ulothrix
(c) Spirogyra
(d) Riccia

Ques. Yeast is
(a) Purely aerobic
(b) Anaerobic
(c) Rarely anaerobic
(d) Both aerobic and anaerobic

Ques. VAM represents
(a) Saprophytic fungi
(b) Symbiotic fungi
(c) Saprophytic bacteria
(d) Symbiotic bacteria

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Ques. AgarAgar is obtained from
(a) Gigartina
(b) Gelidium
(c) Gracillaria
(d) All the above

Ques. Which one of the following statements concerning the algae is wrong
(a) Most algae are photosynthetic
(b) Algae can be classified according to their pigments
(c) All algae are filamentous
(d) Spirogyra does not produce zoospores

Ques. All cells of sex organs are formed gametes in
(a) Algae
(b) Bryophyta
(c) Pteridophyta
(d) Gymnosperm

Ques. Red rust of tea is caused by
(a) Cephaleuros
(b) Synchytrium
(c) Mucor
(d) Fusarium

Ques. Meiotic division in zygote takes place in
(a) Thallophyta
(b) Angiosperms
(c) Gymnosperms
(d) Pteridophyta

Ques. Which of the following is a flagellated alga
(a) Chlamydomonas
(b) Ulothrix
(c) Spirogyra
(d) Acetabularia

Ques. Sexual reproduction in which cells of two different Spirogyra filaments conjugate is known as
(a) Lateral conjugation
(b) Scalariform conjugation
(c) Parthenocarpy
(d) Azygospory

Ques. When three Spirogyra filaments are participating in conjugation, the possibilities are that
(a) The middle one may be female and outer ones are male
(b) The middle one may be male and outer ones are female
(c) Both (a) and (b)
(d) None of the above

Ques. Spirogyra differs from Mucor in having
(a) Uninucleate gametangia
(b) Multicellular gametes
(c) Anisogamete
(d) Sexual reproduction

Ques. In Ulothrix, the cell contains
(a) A chloroplast with many pyrenoids
(b) A chloroplast with a few pyrenoids
(c) A few chloroplasts with a few pyrenoids
(d) Many chloroplasts with a few pyrenoids

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Ques. Spirogyra increases its body length by the division of
(a) The apical cell
(b) The basal cell
(c) Every cell of the body
(d) Accumulation of food in his body

Ques. Who amongst the following is regarded as the “Father of Indian Bryology”
(a) Prof. K.C. Mehta
(b) Prof. D.D. Pant
(c) Prof. S.R. Kashyap
(d) Prof. P.N. Mehra

Ques. Gametophytic generation is dominant in
(a) Pteridophyta
(b) Bryophyta
(c) Angiosperms
(d) Gymnosperms

Ques. Leafy gametophyte is formed from protonema in
(a) Marchantia
(b) Riccia
(c) Funaria
(d) Anthoceros

Ques. In archegonium of moss (Funaria) plant, the number of neck canal cells is
(a) 2
(b) 3
(c) 5
(d) 6 to 18

Ques. Female sex organ in Funaria is called
(a) Paraphysis
(b) Oospores
(c) Archegonium
(d) Artheridium

Ques. Which of the following stage of Funaria is haploid
(a) Gametophyte
(b) Sporophyte
(c) Both (a) and (b)
(d) None of these

Ques. Riccia gametophyte develops from spore and ends in
(a) Thallus
(b) Capsule
(c) Zygote
(d) Spore

Ques. An archegonium of Riccia has
(a) 4 neck canal cells, 1 venter canal cell and one oosphere
(b) 4 neck canal cells, 2 venter canal cells one oosphere
(c) 4 neck canal cells, one venter canal cell and two oospheres
(d) 6 neck canal cells, 2 venter canal cells and one oosphere

Ques. Heterospory is production of
(a) Sexual and asexual spores
(b) Large and small spores
(c) Haploid and diploid spores
(d) Diploid and tetraploid spores

Ques. Fern’s prothallus normally is
(a) Haploid
(b) Diploid
(c) Triploid
(d) Tetraploid

Ques. Meristeles are found in
(a) Cycas stem
(b) Pinus needle
(c) Fern leaf
(d) Fern rhizome

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Ques. The number of spores in the sporangium of fern is
(a) 16
(b) 32
(c) 64
(d) 128

Ques. The gametophyte of fern bears
(a) True roots
(b) Antheridia
(c) Archegonia
(d) Both (b) and (c)

Ques. Protonema stage is found in
(a) Ferns
(b) Mosses
(c) Liverworts
(d) Fungi

Ques. Pteridium possess
(a) Polycyclic dictyostele
(b) Actinostele
(c) Siphonostele
(d) Amphiphloic siphonostele

Ques. Brown hair found at the base of Pteris leaves are
(a) Modified stipules
(b) Modified leaflets
(c) Ramenta
(d) Spines

Ques. Selaginella has the character of evolutionary importance. That character is
(a) Ligule
(b) Seed
(c) Heterospory
(d) Strobilus

Ques. The number of male prothellial cells in Selaginella  are
(a) One
(b) Two
(c) Four
(d) Nil

Ques. Heteromorphic alternation of generations is found in
(a) Spirogyra
(b) Mucor
(c) Selaginella
(d) Pinus

Ques. Red wood tree is
(a) Cedrus
(b) Pinus
(c) Dalbergia
(d) Sequoia

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Ques. In gymnosperms, pollen drop is the
(a) Red drop
(b) Pollens droped by wind
(c) Secretion of nucellus
(d) Water drops


Ques. In Pinus seeds there are
(a) Two cotyledons
(b) One cotyledon
(c) Fleshy cotyledons
(d) Many cotyledons

Ques. The edible part of seed of Pinus is
(a) Epispore
(b) Endosperm
(c) Perisperm
(d) Pericarp

Ques. The winged pollen grain of Pinus sp. are produced in
(a) Pollen chamber
(b) Anther
(c) Tapetum
(d) Microsporangium

Ques. A microsporophyll in Pinus has
(a) One microsporangium on the adaxial side
(b) One microsporangium on the abaxial side
(c) Two microsporangia on the abaxial side
(d) Two microsporangia on the adaxial side

Ques. The stem of female Cycas plant is a
(a) Monopodium
(b) Sympodium
(c) Rhizomatous
(d) Dichotomous

Ques. Cycas is
(a) Hermaphrodite
(b) Dioecious
(c) Monoecious
(d) None of these

Ques. Vegetative reproduction in Cycas occurs by
(a) Scale leaves
(b) Sporophylls
(c) Bulbils
(d) Fragmentation

Ques. The secondary growth in stem of Cycas is brought about by
(a) Persistant cambium
(b) Short lived cambium
(c) Number of cambia produced in succession
(d) Isolated strips of cambium

Ques. Early embryogeny in Cycas is characterized by
(a) Absence of suspensor cell
(b) Presence of expanded free nuclear division
(c) Reduced free nuclear division
(d) Many cotyledons

Ques. Which of the following is considered as more evolved
(a) Dicot plant
(b) Monocot plant
(c) Data are incomplete
(d) Both (a) and (b)

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Ques. True coelom is covered by
(a) Mesoderm
(b) Ectoderm and endoderm
(c) Ectoderm
(d) Endoderm

Ques. Speciation is caused by
(a) Ecological isolation
(b) Geographical isolation
(c) Reproductive isolation
(d) Isolation

Ques. “Venus flower basketis the name of the dried skeleton of
(a) Euspongia
(b) Euplectella
(c) Spongilla
(d) Leucosolenia

Ques. Which of the following is boring sponge
(a) Cliona
(b) Chalina
(c) Euplectella
(d) Ingested and thrown away by ostia

Ques. Glass Rope sponge is
(a) Hyalonema
(b) Euplectella
(c) Scypha
(d) Spongilla

Ques. Which of the following do not have polyp form
(a) Hydrozoa
(b) Scyphozoa
(c) Anthozoa
(d) All the above

Ques. In which phylum nerve cells are found but nerves are absent
(a) Porifera
(b) Coelenterata
(c) Platyhelminthes
(d) Nemathelminthes

Ques. Gastrodermis of Hydra takes part in digestion of
(a) Carbohydrates and fats
(b) Proteins and fats
(c) Proteins, fats and some carbohydrates
(d) Proteins and carbohydrates

Ques. Nematocysts are activated by
(a) Water
(b) Touch
(c) Brain
(d) None of the above

Ques. Germ cells of Hydra are derived from
(a) Ectoderm

(b) Endoderm
(c) Mesoderm
(d) Mesogloea

Ques. Ctenophores have similarities with members
(a) Porifera
(b) Coelenterata
(c) Arthropoda
(d) Annelida

Ques. Ctenophores have similarities with members
(a) Porifera
(b) Coelenterata
(c) Arthropoda
(d) Annelida

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Ques. Pseudocoelom is not found in
(a) Ascaris
(b) Ancylostoma
(c) Fasciola
(d) None of the

Ques. Transfer of Taenia to secondary host occurs as
(a) Onchosphere
(b) Cysticercus
(c) Morula
(d) Egg.

Ques. Both alternation of generations and alternation of hosts are present in
(a) Wuchereria
(b) Fasciola
(c) Taenia
(d) Ascarils

Ques. Cercaria stage of Fasciola hepatica leads to
(a) Sporocyst
(b) Redia
(c) Miracidium
(d) Metacercaria

Ques. Among the following is a freeliving flatworm
(a) Taenia
(b) Fasciola
(c) Schistosoma
(d) Planaria

Ques. Excretory pores present in Ascaris are
(a) One
(b) Two
(c) One pair
(d) Two pairs

Ques. Animal group with pseudocoelom is
(a) Echinoderms
(b) Molluscs
(c) Aschelminthes/Nematodes
(d) Annelids

Ques. Which one of the following phylum is characterized by the absence of a true coelom
(a) Echinodermata
(b) Mollusca
(c) Annelida
(d) Nematoda

Ques. Annelids are
(a) Radially symmetrical
(b) Externally segmented
(c) Triploblastic
(d) Pseudocoelomate

Ques. Hearts of Pheretima are situated in the segments
(a) 10, 13, 16 and 17
(b) 7, 9, 12 and 13
(c) 4, 5, 10 and 13
(d) 11, 14, 17 and 18.

Ques. In Pheretima oxygen carrying haemoglobin occurs in
(a) Corpuscles
(b) Plasma
(c) Both corpusscles and plasma
(d) The statement is wrong

Ques. Which one assists in locomotion
(a) Trichocysts in Paramecium
(b) Pedicellariae of Star Fish
(c) Clitellum in Pheretima
(d) Posterior sucker in Hirudinaria

Ques. Nephrostome occurs in
(a) Septal nephridia
(b) Integumentary nephridia
(c) Pharyngeal and septal nephridia
(d) Pharyngeal and integumentary nephridia

Ques. Blood vessel in Pheretima having valves is
(a) Dorsal
(b) Ventral
(c) Lateral
(d) Integumentary

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Ques. Phaosome in Earthworm is
(a) Lens
(b) Pigment
(c) Nephridium
(d) Hormone

Ques. In earthworm, paired spermatheca are found in
(a) 4th to 7th segments
(b) 5th to 8th segments
(c) 6th to 9th segments
(d) 7th to 10th segments

Ques. Crayfish is a
(a) Crustacean animal
(b) Edible fish
(c) Poisonous fish
(d) None of the above

Ques. For seeing a haemocoel which animal you will select
(a) Earthworm
(b) Hydra
(c) Sponge
(d) Scolopendra

Ques. Mouth parts of a butterfly are of type
(a) Sponging
(b) Siphoning
(c) Piercing and sucking
(d) Chewing and sucking

Ques. Casting off of old skeleton during growth of an animal is
(a) Skinning
(b) Moulting
(c) Ecdysis
(d) Both (b) and (c)

Ques. Wings are vestigial in Cockroach
(a) Female Blatta orientalis
(b) Male Blatta orientates
(c) Male Periplanata Americana
(d) Female Periplanata americana

Ques. Metamorphosis of insects is regulated through hormone
(a) Pheromone
(b) Thyroxine
(c) Ecdysone
(d) All the above

Ques. Difference between male and female Anopheles occurs in
(a) Proboscis
(b) Wings
(c) Antennae
(d) Size

Ques. Difference between male and female Anopheles occurs in
(a) Proboscis
(b) Wings
(c) Antennae
(d) Size

Ques. Corpora allata are removed from a nymph. It will
(a) Remain nymph for life
(b) Become adult
(c) Change to next nymph immediately but will remain in that state
(d) Die after some time

Ques. Hard exoskeleton cephalothorax and gills for respiration are characteristics of
(a) Insecta
(b) Myriapoda
(c) Polychacta
(d) Crustacea

Ques. Wriggler is the larva of
(a) Cockroach
(b) Mosquito
(c) Butterfly
(d) Housefly

Ques. Salivary duct of Cockroach opens at
(a) Hypopharynx
(b) Epipharynx
(c) Left mandible
(d) Right mandible

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Ques. From the following statements select the wrong one
(a) Prawn has two pairs of antennae
(b) Nematocysts are characteristics of the phylum cnidaria
(c) Millepedes have two pairs of appendages in each segment of the body
(d) Animals belonging to phylum porifera are exclusively marine

Ques. In molluscs, the respiratory pigment is
(a) Haemoglobin
(b) Hamocyanin in the blood cells
(c) Myoglobin
(d) Haemocyanin in the blood plasma

Ques. Which one occurs in mollouscs but not in echinoderms
(a) Flame cells
(b) Malpighian tubules
(c) Kidney
(d)  None of the above

Ques. Ospharidium is meant for
(a) Excretion
(b) Nutrition
(c) Selection and rejection of food
(d) Grinding of food

Ques. Main function of pedicellariae in Asterias is
(a) Digestion
(b) Excretion
(c) Respiration
(d) Capture of prey and removal of debris

Ques. Absence of excretory organs, great power of regeneration and exclusively marine animals belong to the phylum
(a) Mollusca
(b) Echinodermata
(c) Fishes
(d) Arthropoda

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Ques. Notochord is restricted to the anterior part of body proboscis in animals of which group
(a) Hemichordata
(b) Urochordata
(c) Cephalochordata
(d) Chordata

Ques. In which of the following the notochord is present in embryonic stage
(a) Vertebrates
(b) Some chordates
(c) All chordates
(d) Non-chordates

Ques. The most important distinctive character of chordata is the presence of
(a) Vertebral column
(b) Hairy skin
(c) Notochord
(d) All the above

Ques. Which fins are paired in fishes
(a) Dorsal fin and anal fin
(b) Pelvic fin and ventral fin
(c) Pectoral fin and pelvic fin
(d) Caudal fin and dorsal fin

Ques. Absence of thumb is characteristic of
(a) Rabbit
(b) Man
(c) Frog
(d) Monkey

Ques. Axolotl larva belongs to the order
(a) Urodela
(b) Anura
(c) Apoda
(d) Stegocephalia

Ques. The skull of frog is
(a) Tricondylic
(b) Monocondylic
(c) Dicondylic
(d) Noncondylic

Ques. Carapace is present in
(a) Toad
(b) Bird
(c) Frog
(d) Tortoise

Ques. Most dinosaurs became extinct during
(a) Late Triassic
(b) Late Jurassic
(c) Cretaceous
(d) Early Tertiary

Ques. Archaeopteryx called a connecting link, carried the characters of
(a) Reptile and bird
(b) Reptile and mammal
(c) Fish and amphibian
(d) Amphibian and reptile

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Ques. The beak in birds is toothed in
(a) Ostrich
(b) Kiwi
(c) Archaeopteryx
(d) Pelican

Ques. Egg-laying mammals are grouped as
(a) Eutheria
(b) Prototheria
(c) Rodentia
(d) Metatheria

Ques. Most animals domesticated by man belong to the order
(a) Carnivora
(b) Rodentia
(c) Ungulata
(d) Lagomorpha

Ques. Which of the following structures is present characteristically only in mammalian brain
(a) Corpus fibrosum
(b) Corpus striatum
(c) Corpus luteum
(d) Corpus callosum

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