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Select the correctly written scitific name of Mango which was first described by Carolus Linnaeus :

  • Option 1)

    Mangifera indica Car. Linn.

  • Option 2)

    Mangifera indica Linn.

  • Option 3)

    Magniferra indica

  • Option 4)

    Magnifera Indica

Mangifera indica Linn

 

 

Which of the following statements is incorrect ?

  • Option 1)

    Morels and truffles are edible delicacies.

  • Option 2)

    Claviceps is a source of many alkaloids and LSD.

  • Option 3)

    Conidia are produced exogenously and ascospores endogenously.

  • Option 4)

    Yeasts have filamentous bodies with long thread-like hyphase.

  Ascomycetes / Sac fungi - Mycelium is septate and branched. Sexual reproduction is Isogamy or anisogamy. Four to eight ascospores are formed in an ascus. Fruiting body is Ascocarp. Centrum is present. - wherein Eg. Saccharomyces, cerevisiae, Baker's yeast, Penicillium.       Yeasts are unicellular fungi. They sometimes form pseudophypha by continuous budding, they are not...

Which of the following statements is incorrect ?

  • Option 1)

    Viroids lack a protein coat.

     

  • Option 2)

    Viruses are obligate parasites.

  • Option 3)

    Infective constitiuent in viruses is the protein coat.

  • Option 4)

    Prions consist of abnormally folded proteins.

  Viruses - Nucleoprotein entity which require living host to replicate themselves utilising its synthetic machinery. -     Viruses are made up of protein coat and genetic material. The genetic material is inserted into the host for multiplication and growth of viruses. Hence, genetic material is the infectious constituent.Option 1)Viroids lack a protein coat.  Option 2)Viruses are obligate...

From evolutionary point of view, retention of thje female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in :

  • Option 1)

    Liverworts

  • Option 2)

    Mosses

  • Option 3)

    Pteridophytes

  • Option 4)

    Gymnosperms

  Reproduction of Pteridophyta - Asexual by meiospores formed inside sporangia which is associated with sporophylls (sporophytes). Gamatophytes develop from spores  and are haploid and independent and reproduce sexually. Zygote, thus produced from diploid sporophyte. - wherein Two other ways of reproduction include: Apogamy and Apospory.       Rentention of the female gametophyte with...

Match the following organisms with their respective characteristics:

(a)  Pila                                  (i)   Flame cells

(b)  Bombyx                           (ii)   Comb plates

(c)  Pleurobrachia                  (iii)   Radula

(d)  Taenia                              (iv)  Malpighian

                                                         tubules

Select the correct option from the following :

 

  • Option 1)

    (a)\; \; \; \; \; (b)\; \; \; \; \; (c)\; \; \;\ (d)

    (iii)\; \; \; \; (ii)\; \; \; \; (i)\; \; \;\; (iv)

     

     

     

     

  • Option 2)

    (a)\; \; \; \; \; (b)\; \; \; \; \; (c)\; \; \;\ (d)

    (iii)\; \; \; \; \; (iv)\; \; \; \; \; (ii)\; \; \;\ (i)

  • Option 3)

    (a)\; \; \; \; \; (b)\; \; \; \; \; (c)\; \; \;\ (d)

    (ii)\; \; \; \; \; (iv)\; \; \; \; \; (iii)\; \; \;\ (i)

  • Option 4)

    (a)\; \; \; \; \; (b)\; \; \; \; \; (c)\; \; \;\ (d)

    (iii)\; \; \; \; \; (ii)\; \; \; \; \; (iv)\; \; \;\ (i)

 
  Excretion in Platyhelminthes - It is through single or paired protonephridium with flame cells. -       Pila has radula (a rasping organ) Bombyx is an arthropoda, it has malpighian tubules. Pleurobranchia is a ctenophore, it has comb plates. Taenia is a platyhelminth, it has flame cells. Option 1)         Option 2) Option 3) Option 4)

Consider the following features:

a. Organs system level of organization

b. Bilateral symmerty

c. True colemates with segmentation of body

Select the correct option of animal group which possess all the above characteristics.

  • Option 1)

    Annelida, Arthropoda and Chordata

  • Option 2)

    Annelida, Arthropoda and Mollusca

  • Option 3)

    Arthropoda, Mollusca and Chordata

  • Option 4)

    Annelida, Mollusca and Chordata

  Metameric Segmentation - Body externally and internally divided into segments with a serial repetition of at least some organs. - wherein Eg. Annelia, Arthropoda and chordate.     Annelida, Arthropoda and Chordata are the phyla that show segmentation. They have organ sysyem level of organization, bilateral symmerty and true coelom. Molluscans also share these feratures but do not show...

Which of the following is correctly matched

  • Option 1)

    Aerenchyma-Opuntia

  • Option 2)

    Age pyramid-Biome

  • Option 3)

    Parthenium hysterophorus-Threat to biodiversity

  • Option 4)

    Stratification-Population

 
Option 1) Aerenchyma-Opuntia Option 2) Age pyramid-Biome Option 3) Parthenium hysterophorus-Threat to biodiversity Option 4) Stratification-Population
Medical
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Select the correct statement:

  • Option 1)

    Gymnosperms are both homosporous and heterosporous 

  • Option 2)

    Salvinia, Ginkgo and pinus all are gymnosperms 

  • Option 3)

    Sequoia is one of the tallest trees 

  • Option 4)

    The leaves of gymnosperms are not well adapted to extremes of  climate 

 
  Largest Gymnosperm - Sequoia dendron -     Option 1) Gymnosperms are both homosporous and heterosporous  This is incorrect option Option 2) Salvinia, Ginkgo and pinus all are gymnosperms  This is incorrect option Option 3) Sequoia is one of the tallest trees  This is correct option Option 4) The leaves of gymnosperms are not well adapted to extremes of  climate  This is incorrect option
Medical
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In bryophytes and pteridophytes, transport of male gametes requires

  • Option 1)

    Wind 

  • Option 2)

    Insects 

  • Option 3)

    Birds 

  • Option 4)

    Water 

 
  Amphibians of plant kingdom - Bryophytes are called so because they depend on external water for fertilization and completion of their life cycle. -     Option 1) Wind  This is incorrect option Option 2) Insects  This is incorrect option Option 3) Birds  This is incorrect option Option 4) Water  This is correct option
Medical
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Which of the following statements is wrong for viroids?

  • Option 1)

    They lack a protein coat

  • Option 2)

    They are smaller than viruses 

  • Option 3)

    They cause infections 

  • Option 4)

    Their RNA is of high molecular weight 

 
  Viroids - Smallest self replicating particles having RNA without protein coat. - wherein Causes potato spindle tuber disease (PSTD).    Their RNA is of low molecular weight Option 1) They lack a protein coat This option is incorrect Option 2) They are smaller than viruses  This option is incorrect Option 3) They cause infections  This option is incorrect Option 4) Their RNA is of high...
Medical
86 Views   |  

Which one of the following statements is wrong?

  • Option 1)

    Cyanobacteria are also called blue-green algae 

  • Option 2)

    Golden algae are also called desmids 

  • Option 3)

    Eubacteria are also called false bacteria 

  • Option 4)

    Phycomycetes are also called algal fungi 

 
  Major Group of Monera - Archaebacteria ( Ancient bacteria) Eubacteria (True Bacteria ) -     Option 1) Cyanobacteria are also called blue-green algae  This option is incorrect Option 2) Golden algae are also called desmids  This option is incorrect Option 3) Eubacteria are also called false bacteria  This option is correct Option 4) Phycomycetes are also called algal fungi  This option...
Medical
99 Views   |  

One of the major components of cell wall of most fungi is 

  • Option 1)

    Chitin 

  • Option 2)

    Peptidoglycan 

  • Option 3)

    Cellulose 

  • Option 4)

    Hemicellulose 

 
As we learnt in  Characteristics of fungi - Eukaryotic and multicellular  Non -photosynthetic and heterotrophic Cell wall composed of chitin and polysaccharides Stored food - Glycogen Fungal body made up of hypae , which aggregate to form mycelia. They are saprotrophic , parasitic or symbionts.  -      Option 1) Chitin  Correct Option 2) Peptidoglycan  Incorrect Option...
Medical
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Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are inlcuded in the kingdom 

  • Option 1)

    Monera 

  • Option 2)

    Protista 

  • Option 3)

    Fungi 

  • Option 4)

    Animalia 

 
  Photosynthetic protists - Three type Diatoms (Chrysophytes) Dinoflagellates Euglenoids -     Option 1) Monera  This option is incorrect Option 2) Protista  This option is correct Option 3) Fungi  This option is incorrect Option 4) Animalia  This option is incorrect
Medical
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Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?

  • Option 1)

    Biological names can be written in any language 

  • Option 2)

    The first word in a biological name represents the genus name, and the second is a specific epithet 

  • Option 3)

    The names are written in Latin and are italicised 

  • Option 4)

    When written by hand, the names are to be underlined

 
As learnt in Nomenclature - Science of providing distinct and proper names to an organism. - wherein There is a need to standardize the naming of an organism, so that it is known by same name across the world.     Biological names are universal and cannot be written in any language. Option 1) Biological names can be written in any language  This option is correct. Option 2) The first word in...
Medical
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It is much easier for a small animal to run uphill than for a large animal, because 

  • Option 1)

    It is easier to carry a small body weight 

  • Option 2)

    Smaller animals have a higher metabolic rate 

  • Option 3)

    small animals have a lower O2 requirement 

  • Option 4)

    The efficiency of muscles in large animals is less than in the small animals

 
  Metabolism - Sum total of all reaction occurring in organism. - wherein Includes anabolism and catabolism.     Metabolism results in release of energy. Hence, smaller animals have more energy due to high metabolic rate. Option 1) It is easier to carry a small body weight  This option is incorrect. Option 2) Smaller animals have a higher metabolic rate  This option is correct. Option...
Medical
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Study the four statements (A-D) given below and select the two correct ones out of them:

A. Definition of biological species was given by Ernst Mayr.

B. Photoperiod does not affect reproduction in plants.

C. Binomial nomenclature system was given by R. H. Whittaker.

D. In unicellular organisms, reproduction is synonymous with growth.

The two correct statements are

  • Option 1)

    B and C

  • Option 2)

    C and D

  • Option 3)

    A and D

  • Option 4)

    A and B

 
  Response to stimuli - Living organism respond to their surrounding or environmental stimuli physically, chemically or biologically. - wherein Eg, Photoperiodism in plants, Turtle retract their head in the shells when frightened.     Five kingdom Classification - Proposed by Whittaker (1969). The main criteria for classification include cell structure, body organisation, mode of nutrition,...
Medical
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Which one of the following statements is wrong?

  • Option 1)

    Algae increase the level of dissolved oxygen in the immediate environment.

  • Option 2)

    Algin is obtained from red algae, and carrageenan from brown algae.

  • Option 3)

    Agar-agar is obtained from Gelidium and Gracilaria.

  • Option 4)

    Laminaria and Sargassum are used as food.

 
As learnt Cell wall composition of Phaeophyceae - Cellulosic wall, covered by gelatinous coating of algin. - wherein Algins are component of phycocolloids.     Algin is obtained from Laminaria & Fucus-Brown algae while Carrageenan from chondrus crispes - Red algae. Option 1) Algae increase the level of dissolved oxygen in the immediate environment. This option is incorrect Option 2) Algin is...
Medical
357 Views   |  

The label of a herbarium sheet does not carry information on

  • Option 1)

    date of collection

  • Option 2)

    name of collector

  • Option 3)

    local names

  • Option 4)

    height of the plant

 
As learnt Phytophthora infestens - Phycomycetes that caused Great Irish famine (1845 - 47). -     Option 1) date of collection This option is incorrect Option 2) name of collector This option is incorrect Option 3) local names This option is incorrect Option 4) height of the plant This option is correct
Medical
297 Views   |  

Select the wrong statement.

  • Option 1)

    The walls of diatoms are easily destructible.

  • Option 2)

    'Diatomaceous earth' is formed by the cell walls of diatoms.

  • Option 3)

    Diatoms are chief producers in the oceans.

  • Option 4)

    Diatoms are microscopic and float passively in water.

 
  Photosynthetic protists - Three type Diatoms (Chrysophytes) Dinoflagellates Euglenoids -   The wall of diatoms contain cellulose & silica. It is called frustules. It is non-degradable. After death it is deposited at the bottom in water & form diatomous earth. Option 1) The walls of diatoms are easily destructible. Option is correct Option 2) 'Diatomaceous earth' is formed by the cell walls...
Medical
432 Views   |  

Methanogens belong to

  • Option 1)

    Eubacteria

  • Option 2)

    Archaebacteria

  • Option 3)

    Dinoflagellates

  • Option 4)

    Slime moulds

 

 

Methanogens -

  • Autotrophs
  • Obligate anaerobes
  • Gram negative bacteria
  • Produce methane gas from CO2 or formic acid
  • Lives in digestive tracks of grazing animals and rotten selvage.

- wherein

Eg.     Methane coccus

            Methanebacterium

 

 


Option 1)

Eubacteria

Option is incorrect

Option 2)

Archaebacteria

Option is correct

Option 3)

Dinoflagellates

Option is incorrect

Option 4)

Slime moulds

Option is incorrect

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