RRB Group D GK Questions 2026

Brood parasitism is the habit of laying eggs in the nest of another species and letting the host bird incubate them and feed the young.

In amensalism one species is harmed while the other neither gains nor loses, a pattern written as minus and zero.

Rhizobium lives inside the nodules on the roots of legumes such as gram, pea, groundnut and arhar. The bacterium converts atmospheric nitrogen into ammonia, a form the plant can absorb and build into proteins, while the plant supplies the bacterium with shelter and with sugars made in photosynthesis.

Robert Paine removed the predatory starfish Pisaster from rocky intertidal pools and found that within a short time the mussels it had been eating took over the rock surface and crowded out other animals, so that more than ten invertebrate species were lost from the pools.

The Russian ecologist G. F. Gause worked with cultures of Paramecium and concluded that when two species need exactly the same limited resource in the same space, one of them is always eliminated in the long run; this is the competitive exclusion principle, also called Gause's principle.

Prickly pear cactus was taken to Australia in the nineteenth century and spread uncontrollably over grazing land because no local animal fed on it.

The egret walks beside grazing cattle and feeds on the grasshoppers and other insects flushed out of the grass by the cattle's hooves.

Cuscuta, known as dodder or amarbel, is a flowering plant that has lost its chlorophyll and its leaves and cannot make its own food.

A lichen is a close partnership between an alga and a fungus in which both partners gain. The alga prepares carbohydrates by photosynthesis and shares them with the fungus, while the fungus absorbs and holds water and minerals and anchors the pair to bare rock or tree bark.

The fifteen themes identified under Swadesh Darshan are tied to faith, nature, culture and landscape, and industry is not among them.

Dekho Apna Desh was launched by the Ministry of Tourism in January 2020 to persuade Indian travellers to see their own country first, and it became better known through a long series of webinars on Indian destinations, crafts and cuisines that were held when travel was restricted.

Seva Bhoj Yojana was begun in 2018 by the Ministry of Culture to lighten the burden on temples, gurudwaras, dargahs, churches, monasteries and other charitable religious institutions that distribute free food, known as prasad, langar or bhandara, by reimbursing the central share of the goods and services tax paid on…

National Tourism Day is observed in India on 25 January every year to spread awareness of the importance of tourism for the economy and for employment, and the Ministry of Tourism marks it with a theme and with events at destinations.

The original Swadesh Darshan spread its money along fifteen themed circuits, each linking several places and often several states, and experience showed that the spending became thin and scattered.

Incredible India was launched by the Ministry of Tourism in 2002 as an international marketing campaign, and its advertisements in foreign magazines and on television turned Indian tourism into a recognised brand, with the exclamation mark in the logo forming the letter I. The campaign has since had further editions.

Adopt a Heritage was announced on World Tourism Day in 2017 by the Ministry of Tourism along with the Ministry of Culture and the Archaeological Survey of India, and it allows a company, trust or individual to take up a monument and pay for its drinking water, toilets, signage, lighting…

HRIDAY covered twelve heritage cities with an outlay of five hundred crore rupees, namely Ajmer, Amaravati, Amritsar, Badami, Dwarka, Gaya, Kanchipuram, Mathura, Puri, Varanasi, Velankanni and Warangal.

The scheme began in 2014-15 as PRASAD, the Pilgrimage Rejuvenation and Spiritual Augmentation Drive, and was renamed in 2017 as the National Mission on Pilgrimage Rejuvenation and Spiritual, Heritage Augmentation Drive.

HRIDAY, the Heritage City Development and Augmentation Yojana, was launched on 21 January 2015 to develop the old core of twelve heritage cities, dealing with water supply, sanitation, drainage, roads, street furniture and the conservation of heritage buildings in the same area.

Swadesh Darshan was launched in 2014-15 as a central sector scheme of the Ministry of Tourism, which means the entire expenditure is borne by the central government, and its purpose is the integrated development of tourist circuits built around a theme such as Buddhism, the Ramayana or the coast.