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ICAR JRF Soil and Plant Nutrition — practice questions

Explore 44 free Soil and Plant Nutrition questions in ICAR JRF Plant Sciences. Open each question or exercise to read its content, reference answers and available explanation.

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Soil and Plant Nutrition questions and exercises with answers

Showing questions 1–30 of 44.

Macronutrient or micronutrient?Read the answer and worked solution →Match the nutrient to its jobRead the answer and worked solution →Dig down through the soilRead the answer and worked solution →Complete the nitrogen fixation lineRead the answer and worked solution →Sheath outside or fungus inside?Read the answer and worked solution →Two are true, one is notRead the answer and worked solution →Water typically makes up what share of the total weight of a plant?Read the answer and worked solution →Where does the carbon that makes up most of the dry mass of a plant come from?Read the answer and worked solution →Besides light and water, about how many elements do plants need for all their biochemical needs?Read the answer and worked solution →Which group lists only macronutrients?Read the answer and worked solution →Which element is classed as a micronutrient?Read the answer and worked solution →On average, what proportion of the dry weight of a cell is carbon?Read the answer and worked solution →Which macronutrient is singled out for its role in regulating the opening and closing of stomata?Read the answer and worked solution →Which nutrient is part of the amino acids cysteine and methionine?Read the answer and worked solution →Phosphorus is necessary for the synthesis of which two classes of compound?Read the answer and worked solution →Which macronutrient is described as important to the photosynthetic process?Read the answer and worked solution →Which set of symptoms follows a nutrient deficiency in a plant?Read the answer and worked solution →Blossom end rot in tomato is caused by a deficiency of which nutrient?Read the answer and worked solution →Intervenal chlorosis in a leaf is attributed to inadequate supply of which nutrient?Read the answer and worked solution →Hydroponics is best described as which method?Read the answer and worked solution →Soil is defined as which layer?Read the answer and worked solution →A soil formed from the weathering of rocks and composed mostly of inorganic material is called what?Read the answer and worked solution →Inorganic mineral matter makes up roughly what share of soil volume?Read the answer and worked solution →In an ideal soil, how should the pore space be shared?Read the answer and worked solution →Humus, the organic material of soil, is made up of what?Read the answer and worked solution →Soil particles between 0.1 and 2 mm in diameter are classed as what?Read the answer and worked solution →Which soil particles are smaller than 0.002 mm in diameter?Read the answer and worked solution →The vertical section through a soil, made of layers with distinct properties, is known as what?Read the answer and worked solution →Which horizon is an accumulation of fine material that has moved downward, forming a dense layer?Read the answer and worked solution →The area of soil affected by root secretions and the microorganisms they encourage is called what?Read the answer and worked solution →

Worked practice questions

Macronutrient or micronutrient?

Read exercise and reference answers
Left
Macronutrient
Items
  1. Item
    Nitrogen
    Answer
    Macronutrient
  2. Item
    Iron
    Answer
    Micronutrient
  3. Item
    Zinc
    Answer
    Micronutrient
  4. Item
    Potassium
    Answer
    Macronutrient
  5. Item
    Calcium
    Answer
    Macronutrient
  6. Item
    Molybdenum
    Answer
    Micronutrient
  7. Item
    Magnesium
    Answer
    Macronutrient
  8. Item
    Boron
    Answer
    Micronutrient
Right
Micronutrient
Instructions
Swipe left for macronutrient, swipe right for micronutrient.
_Source: OpenStax Biology 1e, section 31.1 Nutritional Requirements of Plants_

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Match the nutrient to its job

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Matching pairs
  1. Left
    Potassium
    Right
    Runs the stomatal ion pump
  2. Left
    Nitrogen
    Right
    Builds proteins and nucleic acids
  3. Left
    Phosphorus
    Right
    Builds ATP and phospholipids
  4. Left
    Sulfur
    Right
    Sits in cysteine and methionine
  5. Left
    Magnesium
    Right
    Central to photosynthesis
  6. Left
    Calcium
    Right
    Regulates nutrient transport
Instructions
Tap a nutrient, then tap the job it does inside the plant.
_Source: OpenStax Biology 1e, section 31.1 Nutritional Requirements of Plants_

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Dig down through the soil

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Steps
  1. O horizon
  2. A horizon
  3. B horizon
  4. C horizon
  5. Bedrock
Instructions
Tap the layers in order, starting at the surface and going down.
_Source: OpenStax Biology 1e, section 31.2 The Soil_

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Plant Form and PhysiologyPlant Reproduction