Agronomy - Study Mode

[#536] Native place of moong bean
Correct Answer

(B) Central Asia

Explanation

Solution: Mung bean is also known as green gram, mash belongs to the legume family. It is mainly cultivated in East, southeast and South Asia. The Mung bean is believed to be originated in central Asia i.e. where India, where it was domesticated as early as 1500 BC.

[#537] The primary carbon assimilatory enzyme in C4 is
Correct Answer

(A) PEPCase

Explanation

Solution: C4 cycle is referred to as the β-carboxylation pathway and cooperative photosynthesis. The 4-carbon oxaloacetic acid is the first stable compound of the Hatch and Slack cycle. PEPCase i.e. Phosphophoenolpyruvate carboxylase is an enzyme involved in C4 pathways and is the primary carbon assimilatory enzyme in C4.

[#538] Which form of nitrogen is absorbed by paddy under waterlogged conditions
Correct Answer

(B) NH 4 ion

Explanation

Solution: Nitrogen is the most restrictive nutrient for rice production. Paddy plants need rice to develop an adequate number of panicles. It is very important for the increase of plant height, leaf size, panicle number and ultimately high yield per hectare. It is absorbed as NH 4 ions form under waterlogged conditions.

[#539] The cropping intensity of India is
Correct Answer

(B) 140%

Explanation

Solution: Cropping intensity is the number of times a crop is planted per year in a given agricultural area. It is the ratio of effective crop area harvested to the physical area. At present, the cropping intensity in India is 140%. It has risen 25% approximately since independence. The strategies should be implemented to increase the cropping intensity in developing countries like India because of its rising population.

[#540] Which is generally used for correcting soil acidity
Correct Answer

(B) Lime

Explanation

Solution: The chemical nature of lime is basic and adding a basic substance to the acidic soil will neutralize the acid present and ultimately increase the pH value of the soil. The most common neutralizing material used in agriculture is agricultural limestone as it is very economical and easily available.