Multiple Choice Questions

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One of the world's most poisonous fish toxins is released by

  • clown fish

  • eel fish

  • sword fish

  • puffer fish


D.

puffer fish

The majority of pufferfish species are toxic and some are among the most poisonous vertebrates in the world. In certain species, the internal organs, such as liver, and sometimes their skin, contain tetrodotoxin and are highly toxic to most animals when eaten; nevertheless, the meat of some species is considered a delicacy in Japan, Korea, and China when prepared by specially trained chefs who know which part is safe to eat and in what quantity.


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Which of the following is correct regarding respiration in adult frog

  • In water- Skin, gills

  • On land - Skin, buccal cavity

  • In water- Skin, buccal cavity

  • On land- Skin, lungs, gills


Which of the following is correctly matched

  • Monstera- Fibrous root

  • Dahlin- Fasciculated root

  • Azadirachta- Adventitious root

  • Basil- Prop roots


Deuteromycetes are known as fungi imperfecti because

  • their zygote undergoes meroblastic and holoblastic cleavage

  • only asexual stages are known

  • they have aseptate myceliun

  • they are autotrophic


Abscisic acid is known as the stress hormone because it

  • breaks seed dormancy

  • induces flowering

  • promotes leaf fall

  • promotes closure of stomata


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Na+/K+ pump is associated with

  • passive transport

  • active transport

  • osmosis

  • imbibition


Photorespiration shows formation of

  • sugar but not ATP

  • ATP but not sugar

  • both ATP and sugar

  • neither ATP nor sugar


The microscope usually used for seeing living cells or tissues is

  • compound microscope

  • electron micrscope

  • phase contrast microscope

  • light microscope.


Which of the following is correctly labelled

  • A: Reissner's membrane

  • B: Scala vestibuli

  •  C : Basilar membrane

  • D: Tectorial membrane


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In aerobic respiration, total number of ATP molecules formed from 1 glucose molecule is

  • 28

  • 32

  • 36

  • 30