Environment, Ecology & Biodiversity MCQs

Q.  The Bio-digester technology can solve the open defecation problem faced by India and contribute to Swachh Bharat Mission. Which among the following is / are features of Bio-digester developed by DRDO?
1. It requires no drainage system or sewage treatment plant
2. It requires periodic charging with anaerobic bacterial inoculums if it is in regular use
3. It produces green energy
Select the correct option from the codes given below:


a. Only 1 & 2
b. Only 2 & 3
c. Only 1 & 3
d. 1, 2 & 3


ANSWER: See Answer
 
Bio-Digester bio-toilet is 100% maintenance free. It doesn’t need any external energy for treatment. It produces inflammable gas, which contains maximum amount of methane. It produces green energy (renewable cooking gas).
MCQs:  Which of the following observations are correct regarding the Nelapattu Bird Sanctuary, sometimes seen in news? 1.It is considered one of the biggest habitat for pelicans. 2.It is located about 20 km north of the Pulicat Lake. 3.The barrier island of Sriharikota separates the Pulicat lake from the Bay of Bengal. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following is the correct sequence in ecological level from the lowest to the highest?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  The food chain in which the micro- organism feed by decomposing the organic matter is called-
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following are the main sources of indoor air pollution? 1: Excess moisture 2: New carpets 3: Outdoor pollution 4: Pesticide Select the correct answer from the codes given below-
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following is true about ecological pyramid of number in a forest ecosystem?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Due to which of the following reasons the Loktak lake, Manipur was included on the Montreux Record in 1993? 1) An infestation of water hyacinth 2) The construction of a hydroelectric power plant. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following statements are correct about mangroves? 1. Mangroves are littoral plant formation of tropical and subtropical sheltered coastlines. 2. Mangroves are trees and bushes growing below the high water level of spring tides. 3. They exhibit remarkable capacity for salt water tolerance. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following statements are correct? 1. Mangroves grow in oxygen rich water logged soil which consist of Hydrogen Sulphide. 2. Some of the mangroves are included in IUCN Red List. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following statements are correct? 1. The level of organic matter present in water is known as biological oxygen demand. 2. Greater BOD, lesser is the polluting potential. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following statements are correct regarding Coral Reefs? 1) Coral is actually a living animal 2) Coral has a symbiotic relationship with ‘zooxanthellae Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following are the effects of Eutrophication? 1. Eutrophication creates a detritus layer in the ponds & lakes and produces successively shallower depth of surface water. 2. The water body is eventually reduced into marsh whose plant community is transformed from an aquatic environment to recognizable terrestrial ecosystem. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  What is the IUCN status of Galápagos Penguin?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  What is the IUCN status of Green Turtle?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  What is the IUCN status of Irrawaddy Dolphin?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  “Panthera onca” refers to which of the following?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following whales can be easily identified by the white calluses on their heads?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following statements are correct about Central American spider monkey? 1. It is a species of is a species of spider monkey. 2. It is found in Central America and parts of Mexico and Colombia. Select the correct option from the codes given below:
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Rio Summit, Rio Conference, Earth Summit was held in Rio de Janeiro in which of the following years?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  The ‘Aichi Targets’ were adopted by which of the following?
Category: General Knowledge Quiz,   Published by: T-Code Scripts
MCQs:  Which of the following lists species that are not necessarily now threatened with extinction but that may become so unless trade is closely controlled?
Category: General Knowledge Quiz,   Published by: T-Code Scripts