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Sunday 6 August 2023

TNPSC BOTONY QUIZ  IN ENGLISH(16)

 TNPSC BOTONY QUIZ  IN ENGLISH(16)

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1) Isogamous sexual reproduction in algae- Ulothrix (flagellated)

Spirogyra (non-flagellated)


2) Anisogamous sexual reproduction in algae-  Udorina


3) Oogamous sexual reproduction in algae- Volvox, Fucus


4) Algin- Brown Algae


5) Carragreen - Red Algae


6) Agar-  Gelidium, Gracilaria


(Red algae)


7)  Motile asexual spores in algae- Zoospores


8) Laminarin, Mannitol- stored food of Brown algae (complex carbohydrate) 


9) Fucoxanthin- Brown Algae


10) Phycoerythrin- Red Algae


11) Floridean Starch Found in Red algae, similar to amylopectin and glycogen


12) The main plant body is a gametophyte- Bryophytes


13) Peat- Sphagnum


14) In liverworts - asexual reproduction by fragmentation or by gemmae (green, multicellular, asexual buds) formation 


15) In mosses - asexual reproduction by fragmentation & budding in 2° protonema


16) Microphylls- Selaginella


17) Macrophylls- Fern


18) Heterosporous pteridophytes- Selaginella, 


Salvinia, Azolla, Marsilea


19) Vascular plants without seeds- Pteridophytes


20) Aquatic ferns - Azolla, Salvinia, Marsilea


21) Mycorrhiza- Pinus

(symbiotic association with fungi in the roots)


22) Coralloid roots- Cycas

(nitrogen-fixing cyanobacteria in the roots)


23) The tallest gymnosperm- Sequoia (redwood tree)


24) Pinus - Winged shape pollen grain, Monoecious 


25) Ginkgo - Living fossil 


26) Microscopic angiosperm Wolffia


27) Parallel venation- mostly in Monocotyledons


28) Reticulate venation- Mostly in  Dicotyledons


29) The cells of embryo sac are- Haploid


30) Algae showing haplo-diplontic life cycle- Ectocarpus, Polysiphonia, kelps


31) Diplontic life cycle - Fucus


32) Zygotic meiosis - Haplontic life cycle


33) Chlorella - Unicellular alga, protein rich


34) Porphyra, Laminaria and Sargassum - marine algae, used as food


35) Laminaria - Good source of Iodin





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