RRB Group D GK Questions 2026

The Mediterranean climate, with its hot dry summer and mild wet winter, suits the vine better than almost any other region, and the lands around the Mediterranean sea, together with California, central Chile, the Cape region of South Africa and parts of southern Australia, are the world's great wine-producing areas…

The kolkhoz was the collective farm of the former Soviet Union, in which land, implements, livestock and labour were pooled and the farm worked under state direction with production targets fixed by the plan; the state farm, worked wholly by wage earners, was called the sovkhoz.

Where population is dense and holdings have been divided by inheritance over generations, as in India, China, Bangladesh, Vietnam and Indonesia, the farmer puts in abundant labour, manure and irrigation water on a tiny field and takes more than one crop a year.

Sericulture is the rearing of silkworms on mulberry or other host leaves for the production of raw silk, and it is an allied activity of farming that supports lakhs of rural households in Karnataka, Andhra Pradesh, West Bengal, Assam and Jammu and Kashmir.

Dry farming, also called dryland farming, is the practice of raising crops without irrigation in areas of low and uncertain rainfall, and the conventional limit used in Indian geography is an annual rainfall of about seventy-five centimetres.

The correct answer is C, Indonesia and Malaysia, where the forest clearings of the equatorial islands are called ladang and are cropped with dry rice, maize and root crops for a few seasons.

The correct answer is B, Andhra Pradesh and Odisha, where the hill communities of the Eastern Ghats call shifting cultivation podu.

Jhum, also written jhoom, is the local name of shifting cultivation in Assam and the hill states of the north-east, where a forest patch on a slope is cleared, burnt and cropped for two or three years before being left fallow.

Milpa is the local name given to the slash-and-burn system of the Mexican and Central American forests, where maize, beans and squash are grown together on a burnt forest clearing for a few seasons.

A plantation crop is a single cash crop grown on a large estate with heavy capital, hired labour and processing of the produce on or near the estate, and coffee, grown in the hills of Karnataka, Kerala and Tamil Nadu, is a classic example along with tea, rubber and sugarcane.

Olericulture is the branch of horticulture that deals with vegetables, covering their production in the field, their storage, their processing and their marketing, and it is the branch on which market gardening and truck farming rest.

The pea's ovary is made of one carpel whose two margins fuse to form a ridge, and the ovules are arranged in two rows along that ridge; this is marginal placentation, and it is why the pod opens to show a single row of seeds on each side.

A drupe is a fleshy fruit with a thin epicarp, a mesocarp that may be pulpy as in the mango or fibrous as in the coconut, and a hard, stony endocarp enclosing a single seed; the coconut's shell is that endocarp and the white kernel is the seed.

A true fruit forms from the ovary alone, but in the apple and the pear the thalamus grows, becomes fleshy and forms the greater part of the edible tissue, while the ovary makes only the core; such a fruit is called a false or spurious fruit, and the specific type…

In vexillary or papilionaceous aestivation the corolla has five petals of unequal size: one large posterior petal, the standard, which covers two lateral wing petals, which in turn cover the two smallest anterior petals that are fused into a keel.

In a racemose inflorescence the main axis does not end in a flower but keeps growing, so the lowest flower is the oldest and the youngest buds are at the tip; this upward order is called acropetal, as in radish, mustard and Larkspur.

In a monocot leaf, such as that of wheat, maize, grass, banana or canna, the veins run side by side along the length of the lamina without forming a network, and this parallel venation goes with the other monocot features: one cotyledon in the seed, a fibrous root system, scattered…

In Opuntia and in many Euphorbia species the leaves are reduced to spines to cut down transpiration, and the stem takes over photosynthesis by becoming flattened, green and fleshy; such a stem is a phylloclade.

The mud of a tidal swamp is waterlogged and almost free of oxygen, so these plants send up roots that grow vertically out of the soil into the air and take in oxygen through pores; such roots grow against gravity and are therefore called negatively geotropic.

The banyan's horizontal branches grow so long and heavy that they send down thick aerial roots which reach the soil, thicken into pillars and carry the weight of the branch; these are called prop or pillar roots.