Agriculture - 10 (B.Sc. Agriculture)

Dionaea is a carnivorous plant.

The sepals of a mustard flower are free from each other. Hence, they are called polysepalous.

This is the true characteristic of C4 plants.

Sunflower turns towards sunlight to make food.

Cajanus cajan is botanical name of ‘Pigeon pea’.

Combine can do both harvesting and threshing.

Soyabean is exceptionally rich in protein (~40% by weight), containing all essential amino acids, making it a complete protein source. This is why it's called the 'meat of the field' or 'poor man's meat'. While soy contains vitamins and minerals, its protein content is what distinguishes it from other plant sources.

Aspergillus niger is the primary fungus used for industrial production of gluconic acid through glucose oxidation. Saccharomyces is used for ethanol production. Rhizopus produces organic acids like fumaric and lactic. Lycoperdon is a puffball genus not used in industrial fermentation.

The width of the flower bud is smaller than the flower as the bud is a closed flower. 

Red soil is difficult to cultivate because it is highly weathered, has low fertility, poor water-holding capacity, and is prone to erosion. It forms in tropical climates with high rainfall. Alluvial soil is the most fertile. Black (regur) soil is moisture-retentive and productive. Sandy soil drains well but can be cultivated with irrigation.

Black soil (regur) is ideal for cotton cultivation due to its high moisture retention capacity and clayey texture. Alluvial soil is suitable for rice and wheat, red soil is less fertile, and gravel is not a soil type suitable for agriculture.

The C4 plants often possess a characteristic leaf anatomy called Kranz anatomy. The primary function of Kranz anatomy is to provide a site in which CO₂ can be concentrated around RuBisCO, thereby avoiding photorespiration.

An achene is a dry, indehiscent fruit where the seed coat remains separate from the pericarp (fruit wall). In contrast, cypsela is similar but develops from an inferior ovary, nut has a hard woody wall, and samara has wing-like extensions for wind dispersal.