CBSE
Multiple Choice QuestionsWhich of the following is the most important cause for animals and plants being driven to extinction?
Drought and floods
Economic exploitation
Alien species invasion
Habitat loss and fragmentation
Organisms that tolerate narrow range of salinity are
Euryhaline
Stenohaline
Eurythermal
Hypersaline
Hypersaline
Match Column-I with Column-II
| Column I | Column II |
| A. Saprophyte | i. Symbiotic association of fungi with plant roots |
| B. Parasite | ii. Decomposition of dead organic materials |
| C. Lichens | iii. Living on living plants or animals |
| D. Mycorrhiza | iv. Symbiotic association of algae and fungi |
Choose the correct answer from the option given below
A - iii; B - ii; C - i; D - iv
A - ii; B - i; C - iii; D - iv
A - ii; B - iii; C - iv; D - i
A - i; B - ii; C - iii; D - iv
The Earth Summit held in Rio de Janeiro in 1992 was called
for conservation of biodiversity and sustainable utilization of its benefits
to assess threat posed to native species by invasive weed species
for immediate steps to discontinue use of CFCs that were damaging the ozone layer
to reduce CO2 emissions and global warming
Match the environmental activist in Column I with the environmental issue in Column II and choose the right option
| Column I | Column II |
| 1. Ramesh Chandra Dagar | A. Conservation od forests |
| 2. Ahmed Khan | B. Organic farming |
| 3. Amrita Devi | C. Plastic waste recycling. |
1 - B; 2 - C; 3 - A
1 - C; 2 - A; 3 - B
1 - A; 2 - B; 3 - C
1 - B; 2 - A; 3 - C
1 - B; 2 - A; 3 - C
Which of these following methods is the most suitable for disposal of nuclear waste?
Bury the waste under Antarctic ice-cover
Dump the waste within rocks under deep ocean
Bury the waste within rocks deep below the Earth's surface
Shoot the waste into space
Which one of the following is not in situ conservation method?
National parks
Wildlife sanctuary
Biosphere reserves
Scared groves
Scared groves
Which one of the following is not a method of in situ conservation of biodiversity?
Wildlife Sanctuary
Botanical Garden
Sacred Grove
Biosphere Reserve
