Biology

Minerals and Nutrients

849 Questions

Review essential biology concepts regarding minerals and nutrients in this question bank. It covers trace elements required by plants and minerals crucial for human blood and bone formation. These facts frequently appear in general science exams.

Essential plant micronutrientsChlorophyll synthesis elementsHuman blood and bone mineralsTrace elements in physiology

Minerals and Nutrients Questions

Multiple choice

Most minerals must enter the root by

  1. Active absorption

  2. Passive absorption

  3. Both

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Because the concentration of minerals in the soil is usually lower than in the root cells, plants must use active transport to accumulate them.

Multiple choice

Activator for enzyme Aconitase

  1. Fe +2

  2. Mn+2

  3. Mg+2

  4. Zn+2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aconitase is an iron-sulfur protein that requires a Fe-S cluster for its enzymatic activity. Therefore, Fe+2 is the essential activator/cofactor for this enzyme.

Multiple choice

Lithotrophs acquire electrons from

  1. organic molecules

  2. light

  3. inorganic molecules

  4. sugar

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lithotrophs (or chemolithotrophs) are organisms that use inorganic molecules as their electron donors. Organotrophs, by contrast, use organic molecules.

Multiple choice

Ragi has high nutritional value and is rich in

  1. Iron, Calcium

  2. Magnesium

  3. Phosphate

  4. Vitamins and minerals

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ragi is a highly nutritious millet known for being a rich source of iron and calcium, making it an important food crop for nutritional security.

Multiple choice

Abiotic factors can include which of these lists

  1. Water, air, sunlight, oxygen, soil

  2. Anything dead or dying

  3. Only minerals on the periodic table

  4. Water and soil
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Abiotic factors are the non-living parts of an ecosystem, such as water, air, sunlight, and soil. Option A provides the most comprehensive list of these factors.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Which of the following metal is found in our body?

  1. Iron

  2. Calcium

  3. Potassium

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the above metals are found in body and are required for normal functioning of our body. Iron is found in haemoglobin and myoglobin which are required for oxygen transport in the body. Calcium is found in the structure of bone and teeth. Also plays a role in the growth of nerve cells.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

A non-metal which helps in the growth of plants is:

  1. sulphur

  2. hydrogen

  3. helium

  4. nitrogen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Two major non-metals that enhance the growth of plants as constituents of fertilizers are nitrogen and phosphorus. Nitrogen helps in the leaf development and the green color of leaves is due to it. Phosphorus helps in the development of seeds and fruits and also as disease resistant.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Which one of the following nutrients is not available in fertilizers?

  1. Nitrogen

  2. Phosphorus

  3. Iron

  4. Potassium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Potassium, Nitrogen and Phosphorous are normally derived from the soil in the form of inorganic salts and are nutrients available in fertilizers which make up 0.5 to 6.0 per cent. Hence iron is nutrient which is not available in fertilizers.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Non-metals which are present in fertilizers and enhance the growth of plants is:

  1. nitrogen

  2. phosphorus

  3. potassium
  4. both $A$ and $B$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-metals which are present in fertilizers and enhance the growth of plants are nitrogen and phosphorus. Potassium is a metal. It is also present in fertilizers.

Multiple choice biology improvement in food resources manure manures and fertilisers role of organic manures in soil management

Which nutrient is not supplied to crops via fertilizer?

  1. Phosphorus

  2. Potassium

  3. Iron

  4. Nitrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nitrogen, potassium, and phosphorus are required for the growth of plants in more amounts. These nutrients are absorbed in the form of salts from the soil. However, when the supply from soil is inadequate they are added as fertilizers. Iron is obtained from the soil in sufficient amounts as per the requirement of the plants. So, they are generally not added as the fertilizers. However, there are iron fertilizers which can be added when the soil is deficient in iron. 

Thus, the correct answer is option C. 

Multiple choice biology improvement in food resources manure manures and fertilisers role of organic manures in soil management

Name the macronutrients provided by fertilizers.

  1. Nitrogen

  2. Phosphorous

  3. Potassium

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Fertilizers, the chemically synthesized substances which are very rich in the plant nutrients like nitrogen, phosphorous and potassium.
  • Nitrogen (N) required for the leaf growth 
  • Phosphorus (P) required for the development of roots, flowers, seeds, and fruit 
  • Potassium (K) required for strong stem growth, movement of water in plants, promotion of flowering and fruiting. 

Therefore, the correct answer is option D.

Multiple choice biology natural resources and agriculture manure manures and fertilisers role of organic manures in soil management

Which one of the following nutrients is not available in fertilizers ?

  1. nitrogen

  2. phosphorus

  3. iron

  4. potassium.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nitrogen, phosphorus and potassium (NPK) are the major source available in fertilizers. The most common synthetic fertilizers used in India are super phosphate, urea, calcium ammonium nitrate, ammonium sulphate and NPK fertilizers.