Description : Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct? A B C D (a) Chara Marchantia Fucus Pinus (b) Equisetum Ginkgo Selaginella Lycopodium (c) Selaginella Equisetum Salvinia Ginkgo (d) Funaria Adiantum Salvinia Riccia
Last Answer : (c) Selaginella Equisetum Salvinia Ginkgo
Description : Select the mismatch. (a) Cycas – Dioecious (b) Salvinia – Heterosporous (c) Equisetum – Homosporous (d) Pinus – Dioecious
Last Answer : (d) Pinus – Dioecious
Description : Select the mismatch (1) Cycas – Dioecious (2) Salvinia – Heterosporous (3) Equisetum – Homosporous (4) Pinus – Dioecious
Last Answer : (4) Pinus – Dioecious
Description : Ectophloic siphonostele is found in (a) Osmunda and Equisetum (b) Marsilea and Botrychium (c) Adiantum and Cucurbitaceae (d) Dicksonia and Maiden hair fern
Last Answer : (a) Osmunda and Equisetum
Description : Strobili cones are found in (a) Salvinia (b) Pteris (c) Marchantia (d) Equisetum.
Last Answer : (d) Equisetum.
Description : .Consider the following four statements whether they are correct or wrong. A. The sporophyte in liverworts is more elaborate than that in mosses. B. Salvinia is heterosporous. C. The life-cycle in all seed-bearing plants is diplontic ... are (a) A and C (b) A and D (c) B and C (d) A and B
Last Answer : (b) A and D
Description : Select the correct statement. (a) Sequoia is one of the tallest trees. (b) The leaves of gymnosperms are not well adapted to extremes of climate. (c) Gymnosperms are both homosporous and heterosporous. (d) Salvinia, Ginkgo and Pinus all are gymnosperms.
Last Answer : (a) Sequoia is one of the tallest trees.
Description : Which of the following statements is correct? (a) Ovules are not enclosed by ovary wall in gymnosperms. (b) Selaginella is heterosporous, while Salvinia is homosporous. (c) Horsetails are gymnosperms. (d) Stems are usually unbranched in both Cycas and Cedrus.
Last Answer : (a) Ovules are not enclosed by ovary wall in gymnosperms.
Description : Which of the following statement is correct ? (1) Ovules are not enclosed by ovary wall in gymnosperms (2) Selaginella is heterosporous, while Salvinia is homosporous (3) Horsetails are gymnosperms (4) Stems are usually unbranched in both Cycas and Cedrus
Last Answer : (1) Ovules are not enclosed by ovary wall in gymnosperms
Description : dryopteris and pteris -Biology
Last Answer : answer:
Description : A plant in which sporophytic generation is represented by zygote is (a) Pinus (b) Selaginella (c) Chlamydomonas (d) Dryopteris
Last Answer : (c) Chlamydomonas
Description : Transfusion tissue is present in the leaves of (a) Pinus (b) Dryopteris (c) Cycas (d) both (a) and (c).
Last Answer : (d) both (a) and (c).
Description : Flagellated male gametes are present in all the three of which one of the following sets? (a) Zygnema, Saprolegnia and Hydrilla (b) Fucus, Marsilea and Calotropis (c) Riccia, Dryopteris and Cycas (d) Anthoceros, Funaria and Spirogyra
Last Answer : (c) Riccia, Dryopteris and Cycas
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 : Adiantum is commonly referred to as
Last Answer : walking fern
Description : Why is Adiantum referred to as walking fern?
Last Answer : When the leaves of Adiantum touch the ground, they develop roots and form a new plant. Hence it is called walking fern.
Description : Cycas and Adiantum resemble each other in having (a) seeds (b) motile sperms (c) cambium (d) vessels.
Last Answer : (b) motile sperms
Description : Archegoniophore is present in (a) Marchantia (b) Chara (c) Adiantum (d) Funaria.
Last Answer : a) Marchantia
Description : Which of the following plants is referred to as a living fossil? a. Ephedra b. Cycas c. Gingko d. Adiantum
Last Answer : c. Gingko
Description : Cycas and Adiantum resemble each other in having (1) Vessels (2) Seeds (3) Motile Sperms (4) Cambium
Last Answer : (3) Motile Sperms
Description : Which of the following pairs are correctly matched? (1) Fertile spike —Ophioglossum (2) Sporangiophore—Equisetum (3) Synangium—Psilotum (4) Apophysis—Spirogyra
Last Answer : Ans. ((a))
Description : Besides paddy fields, cyanobacteria are also found inside vegetative part of (a) Equisetum (b) Psilotum (c) Pinus (d) Cycas
Last Answer : (d) Cycas.
Description : Which one of the following is a vascular cryptogam? (a) Ginkgo (b) Marchantia (c) Cedrus (d) Equisetum
Last Answer : (d) Equisetum
Description : Read the following five statements (A - E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C ... . How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One
Last Answer : (d) One
Description : Examples of heterosporous pteridophytes -Biology
Description : Difference between homosporous and heterosporous pteridophytes -Biology
Description : Consider the following statements: Marchantia polymorpha (1) Is dioecious (2) Possesses antheridiophores and archegoniophores (3) Lacks foot and seta in its sporophyte (4) Is heterosporous
Last Answer : Ans. ((b))
Description : 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 ... How many of the above statements are correct? (a) Three (b) Four (c) One (d) Two
Last Answer : (a) Three
Description : Evolutionary important character of Selaginella is (a) heterosporous nature (b) rhizophore (c) strobili (d) ligule.
Last Answer : (a) heterosporous nature
Description : Distinguish between homosporous and heterosporous condition in pteridophytes.
Last Answer : Ans: Majority of pteridophytes are homosporous.All spores produced od similar type. Example: Psilotum Heterosporous pteridophytes produce macro and microspores. Example: Selaginella.
Description : Why the sporophyte of gymnosperm is heterosporous?
Last Answer : Ans: Sporophyte produces two types of spores like smaller micro spores and larger mega spores so it is heterosporous.
Description : Which of the following fern is an excellent biofertilizer? (a) Marsilea (b) Pteridium (c) Azolla (d) Salvinia
Last Answer : (c) Azolla
Description : Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes
Last Answer : (a) Azolla
Description : A water-fern, which is used as a green manure in rice fields, is (a) Salvinia (b) Mucor (c) Aspergillus (d) Azolla
Last Answer : (d) Azolla
Description : Which aquatic fern performs nitrogen fixation? (a) Azolla (b) Nostoc (c) Salvia (d) Salvinia
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 : 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 : The plant body is thalloid in (a) Sphagnum (b) Salvinia (c) Marchantia (d) Funaria.
Last Answer : (c) Marchantia
Description : Aquatic weed act as alternate host and vectors of malaria, yellow and dengue fever is a). Water lettuce b). Salvinia c). Alligator weed d). All of these
Last Answer : d). All of these