621 Specialized protective coverings around megasporangium which vary in number are called_________________? Biology Medium Full question → A Sporangium B Integuments C Ovule D Pericarp
622 Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________? Biology Medium Full question → A Its short thick branched horizontally growing rhizome B Fibrous adventituous roots arise from the lower side of rhizome C Shows heteromorphic alternation of generation D Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures
623 Antheridiophore and archegoniophore are found in_____________? Biology Medium Full question → A Marchantia B Funaria C Both of these D None of these
624 Which of the following statement about filicinae a group of tracheophytes is incorrect_________________? Biology Medium Full question → A They belong to sphenopsida B They are seedless and their leaves are called fronds C They live in shady and moist areas. D They show circinate vernation.
625 The simplest of all bryophytes are___________? Biology Medium Full question → A Thallophytes B Embryophytes C Mosses D Liverworts
626 The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called_____________? Biology Medium Full question → A Overtopping B Fusion C Webbing D Planation
627 Mosses are included in sub-division of ___________? Biology Medium Full question → A Anthoceropsida B Hepaticopsida C Bryopsida D Lycopsida
628 Megaphylls i.e. leaves with divided veins with an expanded lamina is a dharacteristic of ___________________? Biology Medium Full question → A Lycopods B Ferns C Seed plants D Both b and c
629 Which of the following plant group first formed true leaves________________? Biology Medium Full question → A Psilopsida B Lycopsida C Sphenopsida D Pteropsida
630 Sporophyte is____________? Biology Medium Full question → A Monoploid B Haploid C Diploid D Polyploidy
631 Ground pries are also known as___________? Biology Medium Full question → A Lycopods B Spike mosses C Both of these D None of these
632 The zygote formed in liverworts is___________? Biology Medium Full question → A Unicellular B Mulicellular C Multinucleate D None of these
633 Production of two types of spores is known as________________? Biology Medium Full question → A Heterospory B Homospory C Heterogamy D Gamospory
634 The space between the overtopped dichotomous branches was occupies by a sheet of _________ cells during evolution of megaphyllas? Biology Medium Full question → A Sclerenchyma B Chlorenchyma C Parenchyma D Collenchyma
635 Which of the following statement about alternation of generation in bryophytes is incorrect? Biology Medium Full question → A It involves alternation of morphologically different generations B Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition. C Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization D Spore formation occurs through meiosis
636 The dichotomously branching system has shape similar to________________? Biology Medium Full question → A U B R C Y D Fork
637 In bryophytes fertilization takes place in___________? Biology Medium Full question → A Antheridia B Archegonia C water D Ovule
638 Megaphylls are characteristic for____________? Biology Medium Full question → A Ferns B Seed plants C Both of these D None of these
639 Horsetails are included in class of____________? Biology Medium Full question → A Sphenopeida B Lycopsida C Psilopsida D Pteropsida
640 Of the following which one is not the characteristic of the plants included in psilopsida_____________? Biology Medium Full question → A Gametophyte is colourless B They have mycorrhizal association C Rhizoids bear Rhizome D Aerial branches have veinless outgrowths