With reference to a fresh water lake, consider the following characteristics: 1. Richness in nutrients 2. Rapid turnover of phytoplankton 3. Depletion of dissolved oxygen Which of the above is/are observed in a lake after its eutrophication? [IAS 2008]

Related MCQs

• Consider the following statements: 1. On the planet Earth, the fresh water available for use amounts to about less than 1% of the total water found. 2. Of the total fresh water found on the planet Earth, 95% is bound up in polar ice caps and glaciers. Which of the statements given above is/are correct? [IAS 2010]
• Consider the following statements: 1. The albedo of an object determines its visual brightness when viewed with reflected light. 2. The albedo of Mercury is much greater than the albedo of the Earth. Which of the statements given above is/are correct? [IAS 2008]
• Consider the following statements: 1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface. 2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface. Which of the statements given above is/are correct? [IAS 2008]
• Consider the following rivers: 1. Don 2. Syr Darya 3. Volga 4. Ural Which of the above rivers flow into the landlocked Caspian Sea? [IAS 2008]
• A geographic region has the following distinct characteristics: [IAS 2010] 1. Warm and dry climate 2. Mild and wet winter 3. Evergreen oak trees The above features are the distinct characteristics of which one of the following regions?
• With reference to the sub-tropical high pressure belt, consider the following statements: 1. It is affected by Earth's rotation and descent of winds from higher altitudes. 2. It is dynamically induced and characterized with anti-cyclonic conditions. Which of the statement(s) given above is/are correct? [IAS 2009]
• With reference to convectional type of rainfall, consider the following statements 1. It is a warm weather phenomenon. 2. This rainfall is associated with cumulo-nimbus clouds. Which of the statement(s) given above is/are correct? [IAS 2009]
• Consider the following statements regarding general characteristics associated with tropical cyclones 1. Tropical cyclones move with very low velocity over the oceans but become strong while moving over the land areas. 2. They are confined to a particular period of the year (mainly summer) and normally move from east to west. Which of the statement(s) given above is/are correct? [IAS 2009]
• Consider the following statements: 1. The Benguela current had its influence in the formation of Kalahari Desert. 2. The Agulhas current has its influence in the formation of Thar Desert. 3. The currents of Northern Indian Ocean change their course of flow twice a year. Which of the statements given above is/are correct? [IAS 2007]
• Which is the largest fresh water lake in the world ? [CDS 2002]