601 Which of the following is antagonist to Auxin in terms of promotion of stem growth______________? Biology Medium Full question → A Gibberellins B Cytokinins C Abscisic Acid D none of these.
602 Gibberellins may be substituted for ___________ light, therefore promote flowering in long day plants? Biology Medium Full question → A White B Red C Blue D Green
603 Chemically auxins are____________? Biology Medium Full question → A Indole propionic acid. B Indole carboxylic acid. C Indole acetaldehyde D Indole acetic acid.
604 Chlorosis, i.e., yellowish hue on the leaves results from_____________? Biology Medium Full question → 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
605 Which of the following tracheophytes are leafless? Biology Medium Full question → A Psilopsida B Lycopsida C Sphenopsida D Prteropsida
606 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_____________? Biology Medium Full question → A Psilopsida B Lycopsida C Sphenopsida D Prteropsida
607 Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls? Biology Medium Full question → A Psilopsida B Lycopsida C Sphenopsida D Prteropsida
608 Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched Biology Medium Full question → A Isotomous B Dichotomously C Trichotomously D Multichotomously
609 Maize is an example of_________________? Biology Medium Full question → A Monocot B Dicot C Gymnosperms D none of these
610 Which of the following statement about dicots is incorrect _________________? Biology Medium Full question → A They have 4 or 5 sepals and petals or their multiple. B They have parallel vein pattern on their leaves C They are both herbaceous and woody D Vascular bundles are ring shaped in their stems.
611 The first cell of the sporophyte generation is______________? Biology Medium Full question → A Oospore B Spore mother cell C Spore D Gamete
612 Monocots are characterized by___________? Biology Medium Full question → A Number of sepals and petals are 2 or multiple of 2 B Number of sepals and petals are 3 or multiple of 3 C Number of sepals and petals are 4 or multiple of 4 D Number of sepals and petals are 5 or multiple of 5
613 The part of sporophyte which is called sporangium is____________? Biology Medium Full question → A Capsule B Foot C Stalk D None of these
614 Microspore of a seed plant that contain male gametophyte including the gamete is called_______________? Biology Medium Full question → A Pollen grain B Ovule C Microgametophyte D Microsporangium
615 In Hornworts the band of meristematic tissue is found near_____________? Biology Medium Full question → A Foot B Gamete producing region C Spore producing region D At junction of A & B
616 In life cycle of Pinus megaspores produced by megasporangium divide into 4 megaspores by__________________? Biology Medium Full question → A Mitosis B Meiosis C Both depending upon the conditions D None of these
617 Of the following four options which one is most advanced? Biology Medium Full question → A Anthoceropsida B Bryopsida C Hepaticopsida D None of these
618 Pinus Taxus and Picea belong to_________________? Biology Medium Full question → A Spheospsida B Filicineae C Gymnosperms D Angiosperms
619 In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________? Biology Medium Full question → A Spheospsida B Filicineae C Gymnosperms D Angiosperms
620 Protonema is___________? Biology Medium Full question → A Thallus like B Algae like C Fungus like D Plant like