Estuaries possess distinct blooms of excessive growth of a pigmented dinoflagellate. These blooms are called
- (a)red tides
- (b)sea tides
- (c)black tides
- (d)sea flowers
Show answerHide answer
Official answer(a) red tides
Other questions on Water & Wetland Conservation
Consider the following statements : Statement–I : According to the United Nations’ ‘World Water Development Report, 2022’, India extracts more than a quarter of the world’s groundwater withdrawal each year. Statement–II : India needs to extract more than a quarter of the world’s groundwater each year to satisfy the drinking water and sanitation needs of almost 18% of world’s population living in its territory. Which one of the following is correct in respect of the above statements?
- (a)Both Statement–I and Statement–II are correct and Statement–II is the correct explanation for Statement–I
- (b)Both Statement–I and Statement–II are correct and Statement–II is not the correct explanation for Statement–I
- (c)Statement–I is correct but Statement–II is incorrect
- (d)Statement–I is incorrect but Statement–II is correct
Show answerHide answer
Official answer(c) Statement–I is correct but Statement–II is incorrect
“If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys.” Which one of the following functions of wetlands best reflects the above statement ?
- (a)The water cycle in wetlands involves surface runoff, subsoil percolation and evaporation.
- (b)Algae form the nutrient base upon which fish, crustaceans, molluscs, birds, reptiles and mammals thrive.
- (c)Wetlands play a vital role in maintaining sedimentation balance and soil stabilization.
- (d)Aquatic plants absorb heavy metals and excess nutrients.
Show answerHide answer
Official answer(d) Aquatic plants absorb heavy metals and excess nutrients.
Consider the following statements : 1. 36% of India’s districts are classified as “overexploited” or “critical” by the Central Ground Water Authority (CGWA). 2. CGWA was formed under the Environment (Protection) Act. 3. India has the largest area under groundwater irrigation in the world. Which of the statements given above is/are correct ?
- (a)1 only
- (b)2 and 3 only
- (c)2 only
- (d)1 and 3 only
Show answerHide answer
Official answer(b) 2 and 3 only
Which of the following is/are the possible consequence/s of heavy sand mining in riverbeds ? 1. Decreased salinity in the river 2. Pollution of groundwater 3. Lowering of the water-table Select the correct answer using the code given below :
- (a)1 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
Show answerHide answer
Official answer(b) 2 and 3 only
Which of the following are the key features of 'National Ganga River Basin Authority (NGRBA)'? 1. River basin is the unit of planning and management. 2. It spearheads the river conservation efforts at the national level. 3. One of the Chief Ministers of the States through which the Ganga flows becomes the Chairman of NGRBA on rotation basis. Select the correct answer using the code given below.
- (a)1 and 2 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
Show answerHide answer
Official answer(a) 1 and 2 only
With reference to a conservation organization called 'Wetlands International', which of the following statements is/are correct? 1. It is an intergovernmental organization formed by the countries which are signatories to Ramsar Convention. 2. It works at the field level to develop and mobilize knowledge, and use the practical experience to advocate for better policies. Select the correct answer using the code given below.
- (a)1 only
- (b)2 only
- (c)Both 1 and 2
- (d)Neither 1 nor 2
Show answerHide answer
Official answer(b) 2 only