Tag: nutrients and nutrition

Questions Related to nutrients and nutrition

Enzyme pepsin acts upon food at a pH of about

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants hydroponics hydroculture

  1. 3 to split proteins

  2. 2 to split carbohydrate

  3. 7 to change protein into peptones

  4. 2 to change protein in amino acids

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Correct Option: A
Explanation:

Pepsin enzymes are the enzymes that help in degradation of the proteins into various components like peptones. These enzymes are mostly found in stomach which has acidic pH.

Hence, the correct answer is '3 to split proteins'.

Choose the correct answer from the alternatives given.
In plants a common symptom caused by deficiencies of Ca, K, Mg and P is the:

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants hydroponics hydroculture

  1. appearance of a dead necrotic area

  2. poor development of vasculature

  3. bending of the leaf tip

  4. formation of carotenes in plenty

Show answer
Correct Option: A
Explanation:

Deficiency symptoms of Ca, K, Mg and P appear initially as localized tissue necrosis leading to stunted plant growth, necrotic leaf margins on young leaves or curling of the leaves, and eventual death of terminal buds and root tips.

So the correct answer is "appearance of a dead necrotic area".

The inorganic essential elements which are obtained from the soil are called as 

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Mineral elements

  2. Non-mineral elements

  3. Non- essential elements

  4. Both (b) and (c)

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Correct Option: A

The character of an ecosystem is determined by the environmental factor, which is shortest in supply, this is called as

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Law of minimum

  2. Law of diminishing returns

  3. Law of limiting factors

  4. Law of supply and demand

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Correct Option: A
Explanation:

Law of minimum is popularly known as Leibig's law of minimum. 

According to this law the growth is controlled not by the total amount of resources available, but by the scarcest resource (called as limiting factor). 
It has wide ranging applications and one application is ecology. In ecological studies the character of an ecosystem is determined by the environmental factor, which is shortest in supply. For example, type of forest will be decided not by light or soil but by water availability. If water is present in less amount, no matter how abundant is the supply of other resources, only thorny or scrub forests will develop.

Oxygen $(O _2)$ is utilised by an organism to?

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Perform formation of nutritive molecules

  2. Breakdown the nutrient molecules

  3. Obtain nourishment from the food

  4. Burn the organic compounds directly

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Correct Option: A

The Hydroponics is most closely related to which among the following?

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Grafting of Plants

  2. Water conservation

  3. Study of Vegetable

  4. Soilless culture of Plants

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Correct Option: D

Mycorrhizal fungi mobilize nutrients from soils to roots of plants. The nutrient in question is?

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Organic acid

  2. Phosphorus

  3. Manganese

  4. Potassium

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Correct Option: A

Regarding the mineral nutrition of plants, which one of the following statements is correct?

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. The availability of iron to plants decrease with the increase of acidity of the soil

  2. The presence of $CO _2$ dissolved in the soil water reduces the solubility of carbonates of lime in it

  3. Molybdenum is a constituent of nitrate reductase system

  4. Sulphur is a constituent of phenylalanine

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Correct Option: A

Which one of the following is popularly associated with the name of Justus Liebig?

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Law of the Minimum

  2. Law of Tolerance

  3. Ecological Niche

  4. Speciation

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Correct Option: A

Which one of the following statements correctly fines the term hydroponics?

biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

  1. Growing plants in soil less culture

  2. Culture of fishes by varying the water supply

  3. Growing planktons on the surface of water

  4. Growing plants in sterilized soil

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Correct Option: A