Question 1. 1. Stanley Miller performed an experiment in which he simulated the

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Question 1.1. Stanley Miller performed an experiment in which he simulated the atmosphere of the early Earth, added a spark, and obtained simple organic molecules after a period of time. (Points : 0.5)        true
       false Question 2.2. The observation that whales have flippers best matches with which characteristic? (Points : 0.5)        members of a species vary

       struggle for existence

       survival of the fittest

       adaptation to the environment

       competition of limited resources Question 3.3. Which of these does NOT describe the primitive atmosphere? (Points : 0.5)        water vapor

       plenty of free oxygen
       formed by volcanic gases
       no flying creatures
       had many sources of energy Question 4.4. In the water cycle, all water eventually returns to __________ because of gravity. (Points : 0.5)        the sea
       groundwater
       lakes
       atmosphere as vapor
       rivers Question 5.5. About __________ of the energy available at a particular trophic level is incorporated into the tissues at the next trophic level. (Points : 0.5)        1%
       5%
       10%
       25%
       30% Question 6.6. What type of heterotrophs (consumers) grazes directly on plants or algae? (Points : 0.5)        autotrophs
       carnivores
       omnivores
       herbivores
       pescavores Question 7.7. Which of the following describes biotic potential? (Points : 0.5)        maximum population the environment can support

       maximum growth rate under ideal conditions

       maximum birthrate for a species

       maximum resource usage for a population

       minimum mortality for a species Question 8.8. Select the practice that will NOT contribute to sustainability in agriculture. (Points : 0.5)        over crops and multipurpose trees

       integrated pest management

       annual addition of pesticides

       precision farming techniques Question 9.9. Which of the following is a renewable resource? (Points : 0.5)        coal
       mineral
       land
       water
       natural gas Question 10.10. Select the practice that will NOT contribute to sustainability in urban areas. (Points : 0.5)        greenbelts and green roofs

       efficient public transportation

       plant bluegrass lawns rather than native grasses

       recycling of business equipment Question 1.1. Stanley Miller performed an experiment in which he simulated the atmosphere of the early Earth, added a spark, and obtained simple organic molecules after a period of time. (Points : 0.5)        true
       false

Explanation / Answer

From the given data,

1.1)

Stanley Miller executed an experiment to illuminate of what could have happened on Earth billions of years ago. He ran a continuous electrical charge through a flask containing a chemical solution of methane (CH4), ammonia (NH3), hydrogen (H2) and water (H2O).

It was done to regenerate the conditions of lightning storms believed to have existed at that time. This resulted in production of organic compounds, 2% of which were amino acids.

Thus, the correct option is (1) True.

2.2)
The observation that whales have flippers best matches with the character “members of a species vary.” Thus, the correct option is (1).

3.3)

The character that does not describe the primitive atmosphere is no flying creatures. Thus, the correct option is (4).

4.4)

In the water cycle, all water eventually returns to the sea because of gravity. Thus, the correct option is (1).

5.5)

About 10% of the energy available at a particular trophic level is incorporated into the tissues at the next trophic level. Thus, the correct option is (1).

6.6)

The heterotrophs (consumers) grazes directly on plants or algae are herbivores. Thus, the correct option is (4).

7.7)

The term biotic potential is described as the maximum growth rate of a population under ideal conditions (unlimited resources and ideal environmental conditions). Thus, the correct option is (2).

8.8)

Sustainable development is the development that fulfils the requirements of the present generation without compromising with the future needs. The practice that will not contribute to sustainability in agriculture is annual addition of pesticides. Thus, the correct option is (3).

9.9)

The renewable resource is water. Thus, the correct option is (4).

10.10)

The practice that will not contribute to sustainability in urban areas is plant bluegrass lawns rather than native grasses. Thus, the correct option is (3).

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