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Kanal geosi va tili: Hindiston, Inglizcha
Toifa: Tabiat


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Kanal geosi va tili
Hindiston, Inglizcha
Toifa
Tabiat
Statistika
Postlar filtri


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https://www.youtube.com/watch?v=_G1f4U2sPfA




Question . Which mineral element is a constituent of ATP and other high−energy compounds :
So‘rovnoma
  •   (a) P
  •   (b) Ca
  •   (c) Zn
  •   (d) Fe
160 ta ovoz


Question : Maize is a ……………… plant :
So‘rovnoma
  •   a) C3
  •   b) 𝑪_𝟒
  •   c) CAM
  •   d) None of these
162 ta ovoz


Question : In thylakoids :
So‘rovnoma
  •   a) Active transport takes place
  •   b) Light reaction of photosynthesis takes place
  •   c) Reverse transcription takes place
  •   d) Respiration takes place
134 ta ovoz


Question : Photorespiration is the characteristic of :
So‘rovnoma
  •   a) 𝑪_𝟑, plants
  •   b) 𝑪_𝟒, plants
  •   c) CAM plants
  •   d) None of the above
147 ta ovoz


Question : The evapo−transpiration constitutes nearly………………. per cent of total water uptake :
So‘rovnoma
  •   a) 90
  •   b) 80
  •   c) 99
  •   d) 85
135 ta ovoz


Question : The actual site of action for photosynthesis is :
So‘rovnoma
  •   a) Mesophyll cells
  •   b) Mitochondria
  •   c) Ribosomes
  •   d) Bundle sheath cells
141 ta ovoz


Question : Matric potentials are always :
So‘rovnoma
  •   Positive
  •   Negative
  •   Neutral
  •   None of the above
135 ta ovoz


Question : Stomata of a plant open due to:
So‘rovnoma
  •   a) Efflux of potassium ions
  •   b) Influx of hydrogen ions
  •   c) Influx of calcium ions
  •   d) Influx of potassium ions
139 ta ovoz


Question : In sugarcane plant, 14C𝑶_𝟐 is fixed in maleic acid, in which the enzyme that fixes 〖𝑪𝑶〗_𝟐 is :
So‘rovnoma
  •   a) Phosphoenol pyruvic acid carboxylase
  •   b) Ribulose phosphate kinase
  •   c) Fructose phosphatase
  •   d) Ribulose bisphosphate carboxylase
128 ta ovoz


Question : The absorption of water and nutrients against the concentration gradient with expenditure of energy is termed as :
So‘rovnoma
  •   a) Passive absorption
  •   b) Active absorption
  •   c) Osmosis
  •   d) Imbibition
132 ta ovoz


Question : Water moves from the roots to the leaves because the water potential of the leaves :
So‘rovnoma
  •   a) Is higher than that of roots
  •   b) Is lower than that of roots
  •   c) Is equal than that of roots
  •   d) Does not have any relation with that of roots
134 ta ovoz


Question : Primary assimilation of 〖𝑪𝑶〗_𝟐, by 𝑪_𝟑, plants is mediated by the enzyme :
So‘rovnoma
  •   a) Nitrogenase
  •   b) RuBP carboxylase
  •   c) Malate dehydrogenase
  •   d) PEP carboxylase
136 ta ovoz


Question : Photorespiration involves :
So‘rovnoma
  •   a) 𝑪_𝟒 pathway
  •   b) Glyoxylate
  •   c) TCA cycle
  •   d) Oxidative photosynthetic carbon cycle
152 ta ovoz


Bidirectional translocation of minerals takes place in
So‘rovnoma
  •   Xylem
  •   Phloem
  •   Parenchyma
  •   Cambium
157 ta ovoz


In rainy season, door gets swelled due to
So‘rovnoma
  •   imbibition
  •   diffusion
  •   transpiration
  •   respiration
202 ta ovoz


Photo synthetically active radiation is represented by the range of wavelength of
So‘rovnoma
  •   340-450 nm
  •   400-700 nm
  •   500-600 nm
  •   400-950 nm
203 ta ovoz


Loss of water in form of droplet from the special opening on leaves margin is called ?
So‘rovnoma
  •   A) Transpiration
  •   B) Evaporation
  •   C) Guttation
  •   D) Oozing
203 ta ovoz


Dumb Bell Shaped stomata are found in ?
So‘rovnoma
  •   A) Monocot
  •   B) Dicot
  •   C) Algae
  •   D) Gymnosperm
205 ta ovoz

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