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Practice MCQ's- Environment & Ecology 12
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Sudarshan Gurjar is teaching live on Unacademy Plus

Sudarshan Gurjar
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  1. Aboutme SUDARSHAN GURAR Verified Educator & Plus Educator at Unacademy Mentored more than 10,000 students. Teaching Geography since 2013 ( UPSC category). A Geography Learner. COURSES AVAILABLE ON PLATFORM Geography through Maps. Current Affairs & In-depth Editorial Analysis. Special Current Affairs on Madhya Pradesh & many more. PLUS CoURSES Current Affairs & In-depth Editorial Analysis. unacademy


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  4. Consider the following statements reqardinq Biological Diversity Act, 2002: 1. It provides a mechanism for equitable sharing of benefits arising out of the use of traditional biological resources and knowledge 2. The National Biodiversity Authority is mandated to facilitate the implementation of the Act. 3. Vaidhyas and hakims who practice Indian system of medicines are exempted from prior approval for obtaining biological material for commercial purposes Which of the statements given above is/are correct? a 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3


  5. . Answer D All 3 statements are correct: The Biological Diversity Act, 2002 is an Act of the Parliament of India for preservation of bi India, and provides mechanism for equitable sharing of benefits arising out of the use of traditional biological resources and knowledge .The Act was enacted to meet the obligations under Convention on Biological Diversity (CBD), to which India is a party. implement Biological Diversity Act (2002). regulatory and advisory function for the Government of India on issues The National Biodiversity Authority (NBA) was established in 2003 to .The NBA is a Statutory, Autonomous Body and it performs facilitative, of conservation, sustainable use of biological resources and fair and equitable sharing of benefits arising out of the use of biological resources.


  6. With reference to 'Algal Blooms' which of the following statements is/are correct? 1. They are always harmful for aquatic ecosystem. 2. They are called Red Tides 3. Algal blooms can occur in freshwater as well as marine environments. Select the correct answer using the code given below (a) 1 and 3 only (b) 2 only (c) 2 and 3 only (d) 1, 2 and 3


  7. Answer C Not all algal blooms are harmful, some can actually be beneficial. Phytoplankton (Algae) are found at the base of the marine food chain therefore all other life in the ocean relies on phytoplankton. Blooms can also be a good indicator of environmental change not only in the water, but also on land. Algal blooms may occur in freshwater as well as marine environments. statements 1 is incorrect and 3 is correct Algal booms are commonly called as red tides because many times, they turn water red. However, algal booms could be of other colours as well like green, blue, red or brown. Thus, scientists prefer the term - harmful algal bloom. statement 2 is correct. .


  8. Vadose Water Zone' is the zone (a) extending between the ground surface and the water table. (b) of permanently frozen fresh water in polar region. (c) in the ocean where net primary productivity is highest (d) of accumulation of shale gas above the coal bed.


  9. Answer A Water, below the surface, at a pressure greater than atmospheric pressure, which thus flows freely into a hole through interconnected void spaces, is groundwater. Groundwater and soil water together make up approximately 0.5% of all water in the hydrosphere. Water beneath the surface can essentially be divided into three zones: The soil water zone, or vadose zone (Water occurring in the Unsaturated Zone) between the land surface and the water table. (option 'a') An intermediate zone, or capillary fringe, (that zone of soil immediately above the water table that acts like a sponge sucking water up from the underlying water table and retaining this water somewhat