Plant Kingdom Diversity and Characteristics
Explore the intriguing world of the plant kingdom through topics like classification by notable scientists, gamete characteristics in Phaeophyceae, unique features of Bryophytes, and the significance of Bryophytes as the amphibians of the plant kingdom. Delve into the structures and functions of plant bodies, reproductive organs, and pteridophytes, unveiling the captivating diversity within the plant world.
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Classification was given by (A) R.H. Whittaker (B) Aristotle and G.J. Mendel (C) George Bentham and J.D. Hooker (D) Aristotle and George Bentham for flowering plants
In phaeophyceae, the gametes are (A) Pyriform and bear 2 flagella (one longitudinal and other transverse) (B) Pear-shaped and bear 2 flagella that are laterally attached (C) Pyriform and bear 2-8, equal and apical flagella (D) Pear-shaped and bear 2-8, equal and apical flagella.
Which of the following is used as a fuel and has a good capacityof waterabsorption? (A) Riccia (B) Marchantia (C) Sphagnum (C) Funaria
Plant body in Funaria or Bryophyte is (A) Predominantly gametophyte with sporophyte (B) Predominantly gametophyte (C) Completely gametophyte (D) Completely sporophyte sporophyte with
In antherozoids by (A) Sucrose/ Sugar (C) Maleic acid Funaria, archegonia attracts (B) Malic acid (D) Citric acid
Bryophytes are called amphibians of the plant kingdom because (A) Bryophytes can live in soil but are dependent on water for sexual reproduction. (B) They usually occur in damp, humid and shaded area. (C) They play an important role in plant succession on bare rocks and soil. (D) All of the above.
Prothallus (A) Prothallus is is a before the thallus develops (B) structure formed in (C) structure formed in (D) formed after fertilization in pteridophytes structure in pteridophytes formed a sporophytic inconspicuous free living pteridophytes a gametophytic inconspicuous free living pteridophytes conspicuous a gametophytic structure
Which pteridophytes? (A) (B) (C) (D) Which of pteridophytes? (A) Selaginella (B) Marsilea (C) Salvia (D) Both of the the following following are are heterosporous heterosporous Selaginella and Marsilea and Salvia and Both A A and and Salvinia and Azolla and Salvinia and B B Salvinia Azolla Salvinia
In Pinus,male and female cones occurs on (A) different plants (B) same branch of same plant (C) different branches of same plant (D) different branches of different plants
In archegonium/archegonia? (A) 1 (C) 4 6 Cycas, an ovule has how many (B) 2 (D) 2 8
A dominant, independent, photosynthetic, thalloid or erect phase is represented gametophyte and it alternates with the short-lived multicellular sporophyte dependent on the gametophyte for its anchorage and nutrition. This type of pattern is present in (A) Bryophytes (mosses and liverworts) (B) Pteridophytes (ferns and horsetails) (C) Gymnosperms (Cycas and Pinus) (D) Most of the algae (Ulothrix and Spirogyra) by a haploid totally or partially
Which Kelps, Ectocarpus and Polysiphonia? (A) Haplontic (C) Haplodiplontic type of life-cycle is shown by (B) Diplontic (D) Isomorphic
Which of the following sets belong to the same class of algae? (2009) (A) Ectocarpus, Ulothrix, Porphyra (B) Chara, Polysiphonia, Fucus (C) Sargassum, Gracilaria, Laminaria (D) Chlamydomonas, Spirogyra, Volvox
Gametophyte is not an independent free-living generation in (2011) (A) Liverworts/Marchantia (B) Mosses/Polytrichum (C) Ferns/Funaria (D) Gymnosperms/Pinus
Selaginella represent a significant step towards evolution of seed habit because (2011) (A) Female gametophyte lacks archegonia (B) Megaspores possess endosperm and embryo surrounded by seed coat (C) Embryo develops in female gametophyte which are retained on parent sporophyte (D) Female gametophyte is free and get dispersed like seeds and Salvinia are considered to
What is the meaning of suffix sperm in angiosperm and gymnosperm? (2013) (A) Both produce motile sperms (B) Both produce non-motile sperms (C) Both produce seeds (D) Both produce fruits
Which one of the following is wrong about Chara? (2014) (A) Globule is male reproductive structure (B) Upper oogonium antheridium (C) Globule and nucule present on the same plant (D) Upper antheridium and lower oogonium and lower round
Select the correct statement.(2016 Phase-I) (A) Gymnosperms are both homosporous and heterosporous. (B) Salvinia,Ginkgo and Pinus all are gymnosperms. (C) Sequoia is one of the tallest trees. (D) The leaves of gymnosperms are not well adapted to extremes of climate.
Zygotic meiosis is a characteristic of (2017) (A) Fucus (C) Chlamydomonas (B) Funaria (D) Marchantia
Winged pollen grains are present in (2018) (A) Mustard (C) Mango (B) Cycas (D) Pinus
