Plant Nutrition Quiz

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Questions and Answers

What is the primary source of nutrients for plants?

  • Inorganic salts
  • Nitrogen
  • Carbon dioxide (correct)
  • Organic materials

Which of the following elements is NOT required by plants for their nutrition?

  • Calcium
  • Sodium (correct)
  • Phosphorus
  • Magnesium

What is the form of nitrogen that plants require for their nutrition?

  • Nitrogen gas (N2)
  • Nitrate (NO3−) (correct)
  • Ammonia (NH3)
  • Nitrous oxide (N2O)

What is the source of the nutrients found in soil?

<p>Rain and freezing (B)</p> Signup and view all the answers

Which of the following inorganic compounds do plants take up, but do not require for their nutrition?

<p>Iodides (B)</p> Signup and view all the answers

What is the primary composition of rocks in terms of mineral elements?

<p>All mineral elements needed by plants (A)</p> Signup and view all the answers

What is the significance of microorganisms in soil?

<p>They help break down organic materials (A)</p> Signup and view all the answers

Which group of bacteria is able to fix atmospheric nitrogen and where do they live?

<p>Bacteria of the genus Azobacter, living freely in soil (C)</p> Signup and view all the answers

What is guano and why is it valued as a fertilizer?

<p>A type of animal manure made from cattle excreta (A)</p> Signup and view all the answers

How are most nitrogenous fertilizers produced?

<p>By combining nitrogen and hydrogen at high pressures in the presence of catalysts (C)</p> Signup and view all the answers

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