GS Biology Questions and Answers

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Q121
Neoteny is observed in-
  • A Ambystoma
  • B Alytes
  • C Sycon
  • D Sacculina
Answer: Option A
Q122
Kidneys are vital organs of the body because they help in-
  • A Regulation of body fluids
  • B Regulation of acid-base balance
  • C Removal of metabolic wastes
  • D All of these functions
Answer: Option D
Q123
The infective stage of malarial parasite is-
  • A Trophozoite
  • B Merozoite
  • C Sporozoite
  • D Cyst
Answer: Option C
Q124
Parasitic castration occurs in-
  • A Fasciola
  • B Nereis
  • C Sacculina
  • D Palaemon
Answer: Option C
Q125
Ordinary table salt is sodium chloride. What is baking soda?
  • A Potassium chloride
  • B Potassium carbonate
  • C Potassium hydroxide
  • D Sodium bicarbonate
Answer: Option D
Q126
Ozone hole refers to
  • A hole in ozone layer
  • B decrease in the ozone layer in troposphere
  • C decrease in thickness of ozone layer in stratosphere
  • D increase in the thickness of ozone layer in troposphere
Answer: Option C
Q127
Plants receive their nutrients mainly from
  • A chlorophyll
  • B atmosphere
  • C light
  • D soil
Answer: Option D
Q128
Movement of cell against concentration gradient is called
  • A osmosis
  • B active transport
  • C diffusion
  • D passive transport
Answer: Option B
Q129
Photosynthesis generally takes place in which parts of the plant?
  • A Leaf and other chloroplast bearing plants
  • B steam and leaf
  • C Roots and chloroplast bearing plants
  • D Bark and leaf
Answer: Option A
Q130
Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to
  • A angiosperms
  • B gymnosperms
  • C monocotyledons
  • D dicotyledons
Answer: Option B

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