Choose the correct alternative and write that alphabet against the sub-question number:i. ………… is world’s largest organization engaged in environmental activities. (a) Greenpeace (b) Hariyali (c) B. N. H. S. (d) I. I. T.ii. ……….. sanctuary of West Bengal is reserved for tigers. (a) Gir (b) Sunderban (c) Molai (d) Corbettiii. World Biodiversity Day is celebrated on ……… every year. (a) 22nd April (b) 5th June (c) 16th September (d) 22nd Mayiv. Out of the total plant species in the entire world, 50,000 are …………… (a) extinct (b) endangered (c) endemic (d) rarev. Giant squirrel is an ………… species. (a) indeterminate (b) rare (c) endemic (d) endangeredvi. In a food chain, autotrophic plants are present at the ……….. level. (a) tertiary nutrition (b) secondary nutrition (c) producer (d) apexvii. ……….. from Manas sanctuary in Assam is under threat. (Board’s Model Activity Sheet) (a) one horned rhino (b) Lion (c) Musk deer(d) Giant squirrel/Shekru