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Engineering
137 Views   |  

What is common in all the three, Funaria, Dryopteris  and Ginkgo? 

  • Option 1)

    Independent sporophyte 

  • Option 2)

    presence of archegonia 

  • Option 3)

    well developed vascular tissues 

  • Option 4)

    Independent gametophyte 

 
  Bryophyta - Non vascular terrestrial plants present mostly in moist places. - wherein Eg Riccia,Funaria,Anthoceros.     Characteristics of bryophyta - Main plant body is gametophytic and thalloid which is not differentiated into root, stem and leaves.Sporophyte is parasitic over gametophytic. Antheridium and archegonium present. -     Pterosida / Filicopsida (Ferns) - 1-Leaves are fan...
Engineering
134 Views   |  

Besides paddy fields cyanobacteria are also found inside vegetative part of:

  • Option 1)

    Cycas 

  • Option 2)

    Equisetum 

  • Option 3)

    Psilotum 

  • Option 4)

    pinus 

 
  Plant body of Gymnosperms - Differentiated into root, stem and leaves. - wherein Root: Coralloid roots of cycas is associated with N2 fixing blue green algae.Pinus is associated with endophytic fungi called mycorrhizae. Stem: Mostly erect, aerial, solid and cylindrical. Cycas root is unbranched. Pinus, Cedrus and conifers root is branched.     Cyano bacteria / Blue green algae - Gram...
Engineering
190 Views   |  

The plant body is thalloid in 

  • Option 1)

    Funaria 

  • Option 2)

    Sphagnum

  • Option 3)

    Salvinia

  • Option 4)

    Marchantia

 
  Hepaticopsida / Liverworts. - Gametophytic plant body is thalloid with a septate rhizoids and elaters are present in sporophytic stage. - wherein Eg Ricca, Marchantia.     Option 1) Funaria  This is incorrect option Option 2) Sphagnum This is incorrect option Option 3) Salvinia This is incorrect option Option 4) Marchantia This is correct option
Engineering
94 Views   |  

Which one of the following is wrongly matched?

  • Option 1)

    Nostoc-water blooms

  • Option 2)

    Spirogyra-Motile gametes 

  • Option 3)

    Sargassum-Chlorophyll c

  • Option 4)

    Basidiomycetes-puffballs

 
  Types of life cycle in chlorophyceae - Haplontic → Eg. Ulothrix, Spirogyra Diplontic → Eg. Caulerpa Diplohaplontic → Eg. Ulva, Cladophora. -     Reproduction in chlorophyceae - Vegetative by fragmentation or fission. Asexual by Zoospores. Sexual by Isogamous to oogamous. - Spirogyra belongs to class chlorophyceae where are non-motile (non flagelatted).   Option 1) Nostoc-water blooms This...
Engineering
410 Views   |  

Specialized cells for fixing atmospheric nitrogen in Nostoc are 

  • Option 1)

    Akinetes 

  • Option 2)

    Heterocysts 

  • Option 3)

    Hormogonia 

  • Option 4)

    Nodules 

 
As we learnt in Cyano bacteria / Blue green algae - Gram negative, photosynthetic, prokaryotes. Contain chlorophyll – a, carotene, phycobilin. Cell membrane lacks sterol. Reserve food material is cyanophycin protein, Cyanophycean starch, lipid globules. Non flagellate, moment by gliding motion, Some of them can fix atmospheric nitrogen in heterocysts. Eg. Nostoc and anabaena, - wherein Eg....
Engineering
134 Views   |  

Which of the following are likely to be present in deep sea water?

  • Option 1)

    Eubacteria 

  • Option 2)

    Blue-green  algae

  • Option 3)

    Saprophytic fungi

  • Option 4)

    Archaebacteria 

 
  Archaebacteria - Live in harsh habitats. Cell walls lack muramic acid and peptidoglycan. Branched lipids having Phytanyl side groups decreases membrane fluidity. - wherein They are of three major type Methanogens Halophiles Thermoacidophiles    Archaebacteria can survive in harsh environment, so they are present in deep sea Option 1) Eubacteria  This is incorrect answer Option...
Engineering
173 Views   |  

Which one of the following is not a correct statement?

  • Option 1)

    Botanical gardens have collection of living plants for reference 

  • Option 2)

    A museum has collection of photographs of plants and animals 

  • Option 3)

    Key is taxonomic aid for identification of specimens 

  • Option 4)

    Herbarium houses dried, pressed and preserved plant specimens 

 

Option 2 is correct answer

 

 

Engineering
345 Views   |  

The common characteristics between tomato and potato will be maximum at the level of their 

  • Option 1)

    Genus 

  • Option 2)

    Family 

  • Option 3)

    Order 

  • Option 4)

    Division 

 

Family 

Engineering
234 Views   |  

Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?

  • Option 1)

    Fungi - Chitinase

  • Option 2)

    Bacteria - Lysozyme

  • Option 3)

    Plant cells - Cellulase

  • Option 4)

    Algae - Methylase

 
  @6252 - wherein   Cyano bacteria / Blue green algae - Gram negative, photosynthetic, prokaryotes. Contain chlorophyll – a, carotene, phycobilin. Cell membrane lacks sterol. Reserve food material is cyanophycin protein, Cyanophycean starch, lipid globules. Non flagellate, moment by gliding motion, Some of them can fix atmospheric nitrogen in heterocysts. Eg. Nostoc and anabaena, -...
Engineering
280 Views   |  

Which of the following are correctly matched with respect to their taxonomic classification?

  • Option 1)

    Spiny anteater, sea urchin, sea cucumber-Echinodermata

  • Option 2)

    Flying fish, cuttlefish, silverfish - Pisces

  • Option 3)

    Centipede, millipede, spider, scorpion-Insecta

  • Option 4)

    House fly, butterfly, tsetsefly, silverfish-Insecta

 
  Taxonomy - Branch of Biology dealing with identification, nomenclature and classification of an organism. - wherein Carolus Linnaeus is regarded as father of taxonomy.     Housefly, butterfly, tse-tse fly, silverfish-Insecta of phylum-Arthropoda. Flying fish, class-Osteichthyes of phylum-Pisces, cuttle fish (sepia) of phylum-mollusca Silver fish, class-Insecta of phylum-Arthropoda. Sea...
Engineering
104 Views   |  

Which group of animals belong to the same phylum?

  • Option 1)

    Sponge, Sea anemone, Starfish

  • Option 2)

    Malarial parasite, Amoeba, Mosquito

  • Option 3)

    Earthworm, Pinworm, Tapeworm

  • Option 4)

    Prawn, Scorpion, Locusta

 
  Phylum/Division - A group of closely related classes. For plant kingdom Division is used instead of phylum. - wherein E.g Phylum chordate includes classes Mammalia, Pisces, Amphibia, Reptilia and Aves.     Option 1) Sponge, Sea anemone, Starfish This option is incorrect. Option 2) Malarial parasite, Amoeba, Mosquito This option is incorrect. Option 3) Earthworm, Pinworm, Tapeworm This...
Engineering
483 Views   |  

Read the following statements (A-E) and answer the question which follows them.

(A)    In liverworts, mosses, and ferns gametophytes are free - living

(B)    Gymnosperms and some ferns are heterosporous

(C)    Sexual reproduction in Fucus, Volvox and Albugo is oogamous

(D)    The sporophyte in liverworts is more elaborate than {hat in mosses

(E)    Both, Pinus and Marchantia are dioecious

How many of the above statements are correct?

  • Option 1)

    Four

  • Option 2)

    One

  • Option 3)

    Two

  • Option 4)

    Three

 
  Gymnosperms - Evergreen, perennial woody trees or shrubs. They are non-flowering plants producing naked seeds. - wherein Eg Cycas, Pinus, Cedrus    @6325The statement, A ,B and Care correct. In D-sporophyte in mosses is more elaborate than in liverworts. E-Pinus is a monoecious plant, producing male and female cones every year.In Marchantia, plant body is strictly dioecious and isomorphic....
Engineering
171 Views   |  

One of the representatives of Phylum Arthropoda is:

  • Option 1)

    flying fish

  • Option 2)

    cuttlefish

  • Option 3)

    silverfish

  • Option 4)

    pufferfish

 
  Phylum Arthropoda - Largest phylum of Animalia. They are triploblastic, metamerically segmented, bilaterally symmetrical and coelomate (filled with haemocoel) - wherein Eg. Apis, Bombyx, Anopheles.    Silverfish belongs to phylum Arthropoda  Option 1) flying fish this is the incorrect option Option 2) cuttlefish this is the incorrect option Option 3) silverfish this is the correct...
Engineering
214 Views   |  

Monoecious plant of Chara shows occurrence of:

  • Option 1)

    upper oogonium and lower antheridium on the same plant

  • Option 2)

    antheridiophore and archegoniophore on the same plant

  • Option 3)

    stamen and carpel on the same plant

  • Option 4)

    upper antheridium and lower oogonium on the same plant

 
  Chlorophyceae / Green algae - Photosynthetic pigments are chlorophyll -a, chlorophyll -b and carotenoids. They contain pyrenoids and oil droplets as reserve food. - wherein Eg. Ectocarpus, Dictyota, Chara.     Chara is monoecious green algae  Option 1) upper oogonium and lower antheridium on the same plant this is the incorrect option Option 2) antheridiophore and archegoniophore on the...
Engineering
151 Views   |  

Match the name of the animal (column I), with one characteristics (column II), and the phylum/class (column III) to which it belongs:

Column I

Column II

Column III

 

  • Option 1)

    Adamsia

    radially symmetrical

    Porifera

     

  • Option 2)

    Petromyzon

    ectoparasite

    Cyclostomata

     

  • Option 3)

    Ichthyophis

    terrestrial

    Reptilia

     

  • Option 4)

    Limulus

    body covered by chitinous exoskeleton

    Pisces

     

 
  Class chondriocytes (cartilaginous fish) - Marine and predaceous. Mouth is located ventrally and teeth are modified, placoid scales directed backwardly. Air bladder is absent. - wherein Eg. Torpedo, Scoliodon, Pristis, Petromyzon.     Petromyzon (lamprey) is an ectoparasite on fishes, which belongs to Cyclostomata. lchthyophis is a limbless amphibian. Limulus (king crab) is a living fossil,...
Engineering
94 Views   |  

Which one of the following is not a correct statement?

  • Option 1)

    Key is a taxonomic aid for identification of specimens.

  • Option 2)

    Herbarium houses dried, pressed and preserved plant specimens.

  • Option 3)

    Botanical gardens have collection of living plants for reference.

  • Option 4)

    A museum has collection of photographs of plants and animals.

 
  Museum - Collection of preserved plants and animals for study and reference. - wherein Prince of Wales Museum - Mumbai .           Option 1) Key is a taxonomic aid for identification of specimens. This is incorrect answer Option 2) Herbarium houses dried, pressed and preserved plant specimens. This is incorrect answer Option 3) Botanical gardens have collection of living plants for...
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