In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________?
(A) Spheospsida
(B) Filicineae
(C) Gymnosperms
(D) Angiosperms
Specialized protective coverings around megasporangium which vary in number are called_________________?
(A) Sporangium
(B) Integuments
(C) Ovule
(D) Pericarp
Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________?
(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
Antheridiophore and archegoniophore are found in_____________?
(A) Marchantia
(B) Funaria
(C) Both of these
(D) None of these
Chlorosis, i.e., yellowish hue on the leaves results from_____________?
(A) Accumulation of toxic waste products in leaves.
(B) Deficiency of chlorophyll.
(C) Short supplies of mineral nutrients in the soil.
(D) All of these
Which of the following tracheophytes are leafless?
(A) Psilopsida
(B) Lycopsida
(C) Sphenopsida
(D) Prteropsida
Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____________?
(A) Psilopsida
(B) Lycopsida
(C) Sphenopsida
(D) Prteropsida
Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls?
(A) Psilopsida
(B) Lycopsida
(C) Sphenopsida
(D) Prteropsida
Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched
(A) Isotomous
(B) Dichotomously
(C) Trichotomously
(D) Multichotomously