Competitive Exams: Revision Terminology Part 28

  • Bauxbaumia grows on rotten wood. Cryptothalues mirlibis – luck chl & grow on conifers.

  • Smallest Buy ophyte – Zoopsis & Legeunea.

  • Saprophytic – Duxbaumia aphylla.

  • Damp habitat, thalloid body(not difference into root stem & haves) stem & Leave belong to gametophyte generation.

  • Foliose -> difference in stem & leaves

  • Apices of thalli be come thick walled & persistent.

  • Gemmal – multicellular green body originating from the single cell.(in all except sphangiolae)

  • In favourable conditions the tubers germinates.

  • Bulbils – devoid of chl & full of stamch

  • apospory – anthoceros & mosses.

  • Anthedria endogenous – embedded in thallus.

  • Indian Biology – KS Kashyap.

  • Bryophyte – Sex organ are multicellular & sterile jacket

  • Antheridia is protected by perichaetial leaves which surround them & by multicellular hair like structure - paraphyseo.

  • Androcytes -> motile male gamete -> anthrezoids -> nucleus + 2cilia (anterior)

  • Archegoria – Stalked, multicellular flask shape female sex organ – upper neck & lower venter plant surface lack cuticle – no check of water loss.

  • Retention of zygote within female sex organ to nourish developing embryo, appreciably increment chances of survival & growth of zygote

  • Riccia – foot & seta absent in sphagnum – seta is indistinguishable.

  • Foot – help absorb food for developing sporophyte.

  • Seta – elevates capsule high up for easy dispersal of Spores, conducts food matrial

  • Capsule – haploid non motive spore produce

  • Morchantia polymorpha in pulemonary TB & liver disease.

  • Sphymun – dressing, treat haemmorrage, eye diseases, skin.

  • Peristome teeth pogonetum – not hygrosopic.

  • Inverworts (lower bryophytes) – hepaticopside – rhizoid unicellular, gametophyte flat to leagy, leaves not spirally arranged, capsule split for spore dispersal, elaters help in dispersal absent riccia marchartic.

  • Mosses – highe bryophytes – Bryopsied – rhizoids multicellular, gametophyte is leafy, leaf are spirally arranged, elaters absent, funaria, sphagnum, pogamutum, polythrichum (hair cap moss).

  • Riccia – Dichotomously branched, rosetle shaped antheridia & archegonia Lie sunken in longifudinal groove on upper fide of thallus.

  • Archerzoid – biflagellate, pear shaped.

  • Archegonia – flask Shaped, Feaneck cancel cells, uninucleate egg as mature muclige dissolves.

  • Sporophyte – no stalk, reduced & emnedded in thallus.

  • Spore mother cell -> Haploid spores, venter forms 2 Layered wall calyptra around the sporophyte.

  • Marchantia – Rhizoid unicellular, unbranched smooth & turburcelated

  • Storage – Colourless poranchymatous cell.

  • Antheridia – on terminal peltate disc of antheriodiophore (curved, Biflagellate).

  • Archegonia – dorsal side sporophyte foot, seta & capsule hygroscopic covering called calypira, perigynium & perichaetium.

  • Funaria – cord mose epidermis – single layered, stomata absent.

  • Cortex parenchymatous medulla made of conducting tissine – hadrome.

  • Buds on secondary protonema grow into gametophores.

  • Antheridia – perigonial leaves.

  • Antheridia – spirally coiled 2 equal flagella at anterior end.

  • Archegonia – perichaetial leaves.

  • Archegonia – 6 – 9 neck canal cells(Haploid)

  • Protoandry except midrib leaves of function are one celled.

  • Capsule

    1. Operculum – 2 – 3 layered lid.

    2. Annulus – cells at base of operculum.

    3. Peristome – 32 teeth (16 in 2 rings) – exostome and endostome

    4. Columella – solid sterile column of water & food.

    5. Spore sae – numerous spores having chloroplasts.

  • Epiphysis – sterile solid based portion of capsule having chloroplast in many cells & stomata in epidermis sporophyte is partially dependent on the gametophyte.

  • Protonema – juvenile stage of moss.

  • Embryo is holoblastic (entire zygote develops into embryo).

  • Elaters of marchantia = xerochary.