Description : What do archegonia produce? -Biology
Last Answer : answer:
Description : Archegonia in gymnosperms. -Biology
Description : Archegonia in mosses. -Biology
Description : Archegonia male or female -Biology
Description : Are fern archegonia haploid or diploid? -Biology
Description : What are archegonia? -Biology
Description : Is archegonia haploid or diploid? -Biology
Description : Is archegonia present in conifers? -Biology
Description : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under the effect of chemicals.
Last Answer : $ Sperm in Bryophytes are flagellated. ! Sperms in bryophytes move to the mature and dehisced archegonia, under ... D. If both As and R are wrong.
Description : A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte
Last Answer : Ans. ((c))
Description : What are antheridia and archegonia?
Last Answer : Antheridia are the male gamete producing structures in bryophytes/pteridophytes Archegonia are the female gamete producing structures in bryophytes/pteridophytes.
Description : Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and ... of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia
Last Answer : (d) Presence of vessel elements and absence of archegonia
Description : .Which one of the following pairs is wrongly matched? (a) Ginkgo – Archegonia (b) Salvinia – Prothallus (c) Viroids – RNA (d) Mustard – Synergids
Last Answer : (b) Salvinia – Prothallus
Description : What is common in all the three, Funaria, Dryopteris and Ginkgo? (a) Presence of archegonia (b) Well developed vascular tissues (c) Independent gametophyte (d) Independent sporophyte
Last Answer : (a) Presence of archegonia
Description : Which one is a wrong statement? (a) Haploid endosperm is typical feature of Gymnosperms. (b) Brown algae have chlorophyll a and c and fucoxanthin. (c) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms. (d) Mucor has biflagellate zoospores
Last Answer : (d) Mucor has biflagellate zoospores
Description : Sperms of both Funaria and Pteris were released together near the archegonia of Pteris. Only its sperms enter the archegonia as (a) Pteris archegonia repel Funaria sperms (b) Funaria sperms get ... (c) Funaria sperms are less mobile (d) Pteris archegonia release chemical to attract its sperms.
Last Answer : (d) Pteris archegonia release chemical to attract its sperms.
Description : Pteridophytes differ from mosses/bryophytes in possessing (a) independent gametophyte (b) well developed vascular system (c) archegonia (d) flagellate spermatozoids.
Last Answer : (b) well developed vascular system
Description : Pteridophytes differ from bryophytes and thallophytes in having (a) vascular tissues (b) motile antherozoids (c) archegonia (d) alternation of generations
Last Answer : (a) vascular tissues
Description : In ferns, meiosis takes place at the time of (a) spore formation (b) spore germination (c) gamete formation (d) antheridia and archegonia formation.
Last Answer : (a) spore formation
Description : Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte ... by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.
Last Answer : (b) female gametophyte lacks archegonia
Description : Bryophytes can be separated from algae, because they (a) possess archegonia (b) contain chloroplast (c) are thalloid forms (d) have no conducting tissue
Last Answer : (a) possess archegonia
Description : Which of the following is true about bryophytes? (a) They are thalloid. (b) They posses archegonia. (c) They contain chloroplast. (d) All of these
Last Answer : (d) All of these