(b) Only two statements are correct
The Gaganyaan mission aims to send three Indian astronauts into a low Earth orbit for a duration of 5-7 days. (Statement 1 is correct)
The launch vehicle used for the Gaganyaan mission is the GSLV Mk III (Geosynchronous Satellite Launch Vehicle Mark III), not the PSLV. (Statement 2 is incorrect)
The crew module of the Gaganyaan mission will be equipped with a life support system and will re-enter the Earth’s atmosphere. (Statement 3 is correct)

(a) NABARD
The National Bank for Agriculture and Rural Development (NABARD) has sanctioned a study on the impact evaluation of Geographical Indication (GI) products to Symbiosis School of Economics. This particular study will enable NABARD to analyse the benefits accrued to artisans/producers because of the GI tags over the years, said Monomoy Mukherjee, Chief General Manager of NABARD.
The first product that received a GI tag with support from NABARD, was Pochampally Ikat from the State of Telangana (erstwhile united Andhra Pradesh).
NABARD, not only supports GI registration of a product, but also focuses on post-registration activities, such as registration of authorised users, renewal of existing registration, marketing support, consumer awareness and training programmes, among others. A few years ago, NABARD with the help of an NGO, came out with a GI catalogue in French and Spanish. “This will help the products get an international audience,” Mr.Mukherjee said.

(d) Exoplanet
K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth.

(a) Only one
Endogamy, exogamy, and hypergamy are all terms related to marriage
Endogamy: The practice of marrying within a social group, such as a caste, ethnicity, or religion. The word comes from the Greek words endo, meaning “within”, and gamy, meaning “marriage”. It can help preserve cultural practices and kinship ties, but it can also limit genetic diversity and perpetuate social inequalities.
Exogamy: The practice of marrying outside of a social group. Exogamy is the opposite of endogamy.
Hypergamy: The practice of marrying someone of a higher social status or sexual capital than oneself. It’s also known as “dating up” or “marrying up”. In Hindu customs, a bride’s family may assess the groom’s educational level, financial ability, and social status before approving the marriage.

(d) 1, 2 and 3
Some organisms live together and share both shelter and nutrients. This relationship is called symbiosis. Symbiosis is a relationship or interaction between two or more species that share a common habitat. Mutualism, Commensalism, and Parasitism are the three types of behaviors seen in symbiotic interactions
Cnidarian is an invertebrate phylum which often involves in a symbiotic relation with the unicellular dinoflagellate algae, called zooxanthellae. (Statement 1 is correct)
Certain fungi live inside the roots of plants. The plants provide nutrients to the fungus and, in return, the fungus provides water and certain nutrients. Fungi also lives in a symbiotic relation with algae as a lichen. (Statement 2 is correct)
Protozoa also forms symbiotic relations with other organisms. Symbiosis in protozoa mostly represents: a close mutualistic association between a protozoan and unicellular symbiotic (like bacteria, cyanobacteria or/and unicellular algae) or protozoans and a multicellular organism (ruminants, lower termites, wood-eating cockroaches, plants) (Statement 3 is correct)