Ex-situ conservation meant for protecting endangered plant species under artificial conditions is _____ . (a) Zoological garden (b) Red Data Book (c) Museum (d) Botanical garden

Ex-situ conservation is a conservation practice that involves protecting endangered species outside their natural habitat. #Endangered plant species# refers to plants that are at risk of becoming extinct due to various factors like habitat loss, ecological changes, or human intervention. #Artificial conditions# mean conditions that are not natural but have been created or manipulated by humans.

#(a) Zoological garden# is a place where animals, including endangered species, are kept under artificial conditions for conservation, research, and education purposes. This option is not correct since the question is about endangered plant species. #(b) Red Data Book# is an international publication that contains data on the conservation status of various plant and animal species. While this book helps in the conservation process, it is not an example of ex-situ conservation under artificial conditions. So, this option is also not correct. #(c) Museum# is a place where objects of scientific, cultural, historical, or artistic value are stored and exhibited. It is not a place for conserving living endangered plant species under artificial conditions. Hence, this option is not correct. #(d) Botanical garden# is a place where plants are grown, exhibited, and conserved for research, education, and aesthetic purposes. Endangered plants can be conserved under artificial conditions in botanical gardens.

After evaluating each option, we can conclude that the correct answer is (d) Botanical garden, as it is the place where endangered plant species are conserved under artificial conditions for protection.