The correct answer is:
Option 3: threatened species
The Red List refers to the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, which is a comprehensive inventory of the conservation status of plant and animal species worldwide. The Red List provides detailed information on the levels of threat faced by species, helping to assess and categorize species that are at risk of extinction.
The categories in the IUCN Red List range from Least Concern to Extinct, with species being classified as Critically Endangered, Endangered, Vulnerable, and so on, depending on how close they are to extinction.
Option 1: all economically important plants – The Red List does not focus exclusively on economically important plants, although some species on the Red List may be important economically.
Option 2: plants whose products are in international trade – The Red List includes plants and animals at risk, regardless of whether their products are traded.
Option 4: marine vertebrates only – The Red List includes all types of species, not just marine vertebrates.
Thus, the correct focus of the Red List is on threatened species.
\(\_\_\_\_\_\) is also called the terror of Bengal.
The historic Convention on Biological Diversity, ‘The Earth Summit’ was held in Rio de Janeiro in the year
Consider a water tank shown in the figure. It has one wall at \(x = L\) and can be taken to be very wide in the z direction. When filled with a liquid of surface tension \(S\) and density \( \rho \), the liquid surface makes angle \( \theta_0 \) (\( \theta_0 < < 1 \)) with the x-axis at \(x = L\). If \(y(x)\) is the height of the surface then the equation for \(y(x)\) is: (take \(g\) as the acceleration due to gravity)
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The reduction in the number, genetic variability, and the variety of species and the biological community of a place is known as the Loss of Biodiversity. By humans, due to the colonization of the tropical Pacific Island, there has been a deprivation of more than 2000 species. Present data evaluates that around 15,500 species are endangered. Presently the loss of biodiversity is evaluated at - 23% of all mammal species, 12% of all bird species, 32% of all amphibian species, and 31% of gymnosperm species on the planet are facing the threat or warning of extinction.