1 Created on July 29, 2021 Biological Classification: Gymnosperm/Angiosperm 1 / 30 Heteromorphic alternation of generation occurs in Funaria, Spirogyra, Selaginella Funaria, Selaginella, Cycas Spirogyra, Rhizopus, Selaginella Rhizopus, Funaria, Spirogyra 2 / 30 Ovules in Pinus are generally anatropous with four integuments. anatropous with one integument. amphitropous with three integuments. orthotropous with two integuments. 3 / 30 Which of the following is living fossil? Pinus Ginkgo Thuja Deodar 4 / 30 Which of the following is not the feature of gymnosperms? Parallel venation Perennial plants Distinct branches (long and short branches) Xylem with vessels 5 / 30 The wood of Pinus is pycnoxylic and monoxylic. pycnoxylic and heteroxylous. manoxylic and homoxylous. manoxylic and heteroxylous. 6 / 30 What is the similarity between gymnosperms and angiosperms? Phloem of both have companian cells. Endosperm is formed before fertilization in both. Origin of ovule and seed is similar in both. Both have leaves, stem and roots. 7 / 30 Vascular bundles of Cycas stem are conjoint. collateral and closed. conjoint, collateral and open. conjoint, collateral and closed. 8 / 30 Match the plant structures given in the column I with their plants given in the column II. A-q,B-s, C-r, D-p A-r, B-p, C-s, D-q A-q, B-s, C-p, D-r A-s, B-r, C-p, D-q 9 / 30 In Cycas male strobilus and megasporophylls occurs on the same individual. the same cone consists of both micro and megasporophylls. the same sporophyll bears microsporangia and ovules. male strobilus (cone) and megasporophylls occur on separate individuals. 10 / 30 Which is incorrect about Cycas? Its xylem has vessels. It has circinate venation. It does not have well organised female flower. Its roots posses some blue-green algae. 11 / 30 Top-shaped multiciliate male gametes, and the mature seed which bears only one embryo with two cotyledons are characteristic features of polypetalous angiosperms gamopetalous angiosperms conifers cycads 12 / 30 Match items in column I with those in column II and select the correct option. A-L,B-J,C-M,D-N,E-K A-K, B-J,C-L, D-M, E-N A-N,BL,C-K, D-M,E-J A-J, B-K,C-N, D-L, E-M 13 / 30 In which of the following groups would you placed a plant which produces seeds but lacks flower and fruits? Fungi Bryophytes Pteridophyta Gymnosperms 14 / 30 The secondary wood of Pinus is characterized by presence of resin cells. presence of resin ducts. absence of resin ducts. presence of vessels. 15 / 30 Number of cotyledons in Zea, Cycas and Pinus respectively are 1,1,many 1,2,1 1,1,1 1,2, many 16 / 30 Wood of Cycas is monoxylic and manoxylic manoxylic and polyxylic diploxylic monoxylic 17 / 30 A typical gymnospermous plant has 8 chromosomes in leaf cells. What will be number of chromosomes in the cells of its gametophyte? 16 8 4 24 18 / 30 Consider the following statements regarding gymnosperms and choose the correct option.(A) In gymnosperms, the male and female gametophytes have an independent existence.(B) The multicellular female gametophyte is retained within the megasporangium.(C) The gymnosperms are heterosporous.Of these statements A) and (B) are true but (C) is false (A) and (C) are true but (B) is false (B) and (C) are false but (A) is true (A) and (C) are false but (B) is true (B) and (C) are true but (A) is false 19 / 30 Which of the following is the best explanation for the excurrent (pyramidal) shape of Pinus (the branches giving the plant the apprearance of a tall cone)? Competition among adjoining trees for sunlight. The effect of auxins on growth of stem tips. Adaptation for wind pollination. Efficiency of water transport from ground to leaves. 20 / 30 Characters of both conifers and cycads are found in Ginkgo Ephedra Cupressus Thuja 21 / 30 Which statement is correct with reference to Pinus? It is of much economic value. It is cosmopolitan in distribution. It grows in deserts and exhibits xerophytic character. It form deciduous trees in temperate region. 22 / 30 In the embryo of Pinus, rosette cells lie above suspensor cells. between suspensor and embryonal cells. between primary and secondary suspensor cells. between embryonal and apical cells. 23 / 30 Siphonogamy occurs in Pinus Pteris Funaria Ulothrix 24 / 30 Which Gymnospermic order includes all fossil plants? Cycadales Cycadofilicales Cycadeoidales Coniferales. 25 / 30 Diploxylic condition occurs in Cycas in root stem coralloid root leaflet 26 / 30 Cycas has two cotyledons but is not included under angiosperms because it has circinate ptyxis compound leaves monocot like stem naked seeds 27 / 30 In Pinus seeds, there are two cotyledons one cotyledon fleshy cotyledons many cotyledons 28 / 30 Which of the following structures in Pinus are haploid? Megaspore, integument, root Endosperm, megaspore, pollen grain Pollen grain, leaf, root Megaspore, endosperm, embryo 29 / 30 Match the column I with column II and choose the correct answer from those given below. A-(r), B-(s), C-(q), D-(p) A-(p), B-(s), C-(q), D-(r) A-(s), B-(p), C-(r), D-(q) A-(r), B-(q), C-(s), D-(p) 30 / 30 In Pinus megaspore on germination forms pollen tube with motile sperms. endosperm with archaegonia. endosperm with sperms. endosperm with embryo sac. Your score is 0% Restart quiz
