Soil Science - Study Mode

[#426] Which element is the metal component of urease enzyme
Correct Answer

(D) Nickel

Explanation

Solution: Nickel is the element and the metal component of the urease enzyme. They are nickel-containing metalloenzymes of high molecular weight. Ureases are found in numerous bacteria, fungi, algae, plants and some invertebrates, as well as in soils as soil enzymes. These enzymes catalyze the hydrolysis of urea into carbon dioxide and ammonia.

[#427] In which soil zinc availability to crop is higher
Correct Answer

(A) Acidic soil

Explanation

Solution: In Acidic soils , zinc availability to crops is higher. The amount of zinc present in the soil depends on the parent materials of the soil. Highly leached soils have generally low plant available zinc. And it is mostly seen, that the soils originating from igneous rocks are also higher in zinc.

[#428] Boron content in borax (suhaga) is
Correct Answer

(A) 11%

Explanation

Solution: It is found that boron content in its natural deposit in the form of borax is about 11%. Borax is a salt, a colourless crystalline solid that dissolves in water to make a basic solution. Borax is a combination of Boron, sodium and oxygen. It is commonly available in powder or granular form and has many industrial and household uses, also as pesticides.

[#429] Match the following columns: Column I (Nutrients) Column II (Functions) a. Sulphur 1. Increase oil quality b. Potassium 2. Essential constituent of chlorophyII c. Calcium 3. Eessentia constituent of cell d. Magnesium 4. Enhance drought and disease resistant power
Correct Answer

(B) a-1, b-4, c-3, d-2

Explanation

Solution: Sulphur is an essential ingredient of the oil, and it increases the quality of the oil. Potassium enhances drought and disease resistant power in plants. Calcium is the essential constituent of the cell, and is crucial for plant growth and makes plants less susceptible to disease and pests. Magnesium is an essential constituent of chlorophyll. It is important as it sustains metabolic roles within different plant cell compartments.

[#430] FYM mainly include
Correct Answer

(D) All of the above

Explanation

Solution: FYM stands for Farmyard Manure. It is an organic matter made up of compost and green manure. FYM mainly includes Dung, Urine and litter. Farmyard manure improves the soil structure and is used as a natural fertilizer in farming. It provides essential nutrients to plants, including micronutrients that help improve the quality of gardens and crops.