Glowing of sea water at night is because of :-
? cyclotella ? gonyaulx ? noctiluca ? triceratiumSexual reproduction does not occurs in :-
? spirogyra ? nostoc ? chlamydomonas ? ulothrixWhich of the following types of sexual reproduction is found in algae?
? isogamous only ? anisogamous only ? oogamous only ? all of theseWhich of the following is asexual reproductive structure of algae?
? azygospore ? aplanospores, zoospore, akinetes and heterocyst ? aplanospores only ? none of theseAlgae are mostly :-
? aquatic ? terrestrial ? epiphytic ? both "aquatic" and "epiphytic"Pyrenoid of algae is related to :-
? asexual reproduction ? sexual reproduction ? vegetative reproduction ? storage of foodSometimes the gametic fusion does not occur and the gametes behave like zygospores & give rise to new plants by parthenogenesis. Such bodies are known as:-
? aplanospores ? azygospores ? hypnospores ? zygosporesZoospore motility is because of :-
? movement of hold fast ? movement of flagella ? movement of water ? climatic variationsOne of the following can flourish at high temperature of 870 C:-
? volvox ? spirogyra ? ulothrix ? none of theseAlgae differ from fungi in having :-
? oil deposits ? thallus structure ? unicelled sex organs ? chlorophyllThe orgamism which help in the fixation of nitrogen belong to class :-
? phaeophyceae ? chlorophyceae ? rhodophyceae ? cyanophyceaeThe fusion of male and female gametes which are similar in size, shape, structure and behaviour is termed as :-
? oogamous ? anisogamous ? conjugation ? isogamousThe incorrect match for chlorophyll type is :-
? chlorophyll ‘a’… green algea ? chlorophyll ‘d’… diatoms ? chlorophyll ‘c’… diatoms and brown algae ? chlorophyll ‘d’… red algaeOne of the following is incorrect match :-
? focus…adult is diploid, sea weed, chlorophyll a and c ? euglenoids… flagella, pellicle, eye spot ? diatoms… silica shells, box like, golden brown ? ceratium…. Cilia, calcium, carbonate shell, gulletOne of following feature is shared by algae & fungi :-
? reserve food matter in starch ? embryo absent in life cycle ? parenchymaous thallus ? autotophismPhotosynthetic protistans are:-
? diatoms; euglenoids;slime moulds ? sarcodines; dinoflagellaes; diatoms ? euglenoids; diaoms; dinofagellae ? ciliates; zooflagellate and dinoflagellatesProtistans tide over long unfavourable periods by :-
? hypnospores ? aplanospore ? cysts ? none of thesePyrenoid consists of :-
? protein surrounded by starch ? starch surrounded by protein ? only protein ? only starchAmong the following which is obtained from algae?
? silica ? alginates ? agar-agar ? all aboveAlgae have great economic importance to man because :-
? they can be growth in tanks ? they help to restore the fertility of the soil ? of their high protein content, some algae may be used as future food ? both " they help to restore the fertility of the soil " and " of their high protein content, some algae may be used as future food "Zygotic meiosis occurs in :-
? gymnosperms ? ferns ? moss ? algaeWhich one of following resemble plants as well as animals?
? anabena ? nostoc ? spirogyra ? euglenaAmongst following which is obtained from algae?
? chocolate ? wax ? butter ? agar-agarThe only asexual algal spores formed during favourable conditions is :-
? akinete ? zoospore ? zygospore ? aplanosporeThe most important character which is used in classifying different algae is :-
? cell wall structure ? habit ? types of pigments ? none of theseAlgae differ from Riccia and Marchantia in having :-
? multicellular body ? pyrenoids in the cells ? multicellular sex organs ? thalloid bodyThe members of algae found in littoral zone is :-
? volvox ? spirogyra ? ectocarpus ? ulothrixThe first division of zygote is a reduction division in :-
? algae ? bryophyte ? pteridophyta ? all aboveAccessory photosynthetic algal pigments are :-
? allphycocyanin ? phycocyanin ? phycoerythrin ? all aboveWhich one of the following statements concerning the algae is wrong?:-
? algae can be classified according to their pigments ? all agae are filamentous ? spirogyra does not produce zoospores ? most algae are photosyntheticWhich species of protests are known as the ‘whirling whips’ because of the spin produced by two flagella hard-surfaced bodies?-
? diatoms ? chrysophytes ? dinoflagellates ? golden-brown algaeWhich of the following algae does not store its photosynthetic product as starch but store as oil?
? rhodophyceae ? xanthophyceae ? phaeophyceae ? chlorophyceaeDiatoms form fueller’s earth because of their :-
? chloroplast ? cell wall ? cytoplasm ? all of theseDiatoms are :-
? cyanobacteria ? phaeophyta ? goldenbrown algae ? rhodophytansBy which of the following method an algae can perrenate under unfavourable condition?
? zoospores ? palmella stage ? akinete ? both "palmella stage" and "akinete"Who is regarded as the father of Indian phycology?
? K.C Mehta ? P. Maheshwari ? M.O. P. lyengar ? S. R. KashyapAll algae have :-
? chlorophyll a and chlorophyll b ? chlorophyll b and carotenes ? chlorophyll a and carotenes ? phycobilins and carotenesDiatoms deposits are called :-
? humus ? resin ? Fueller’s earth ? peatCell wall of diatom consists of :-
? silica only ? pectic substances ? both "silica only" and "pectic substances" ? none of theseWhich of following has no embryo in its life cycle?
? selaginella ? funaria ? pinus ? chlamydomonasImportant information obtaioned from Acetabularia experiment was :-
? one gene one enzyme hypothesis ? operon theory ? nucleus is the controlling centre of all processes occurring in the cell ? genes are present on chromosomesVaucheria a siphonaceous algae which belongs to :-
? cyanophyceae ? rhodophyceae ? xanthophyceae ? phaeophyceaeIncorrect match amongst the following regarding shape of chloroplast is :-
? spirogyra-spiral ? chalmydomonas-reticulate ? ulothrix-girdle shaped ? none of theseIsomorphic alternation of generation is found in :-
? ulva ? spirogyra ? sargassum ? oedogoniumUlothrix filaments are :-
? spiral ? girdle shaped ? branched ? unbranchedPerrenating structure in spirogyra is :-
? zoospore ? zygospore ? aplanospore ? palmella stageThe gametes of spirogyra are :-
? non-motile ? flagellated ? non-flagellated ? motileWhat is the common method of asexual reproduction in Ulothrix?
? microzoospores ? macrozoospores ? aplanospores ? macro and microzoosporesWhich one of the following does not belong to embryophyta?
? spirogyra ? pinus ? selaginella ? funariaWhich one of these is the vegetative reproduction in ulothrix and spirogyra?
? budding ? sporulation ? parthenogenesis ? fragmentation