QUESTION 20 In the aphids. The Asian ladybugs are not eaten by the local bird po
ID: 280032 • Letter: Q
Question
QUESTION 20 In the aphids. The Asian ladybugs are not eaten by the local bird populations. The Asian ladybug population multiplies quickly displaces the local ladybugs, eliminates the aphids, and begins to eat other local insects. The Asian ladybug O is responsible for habitat fragmentation in the plum orchard O is being overexploited. O qualifies as an invasive species. O is a threatened species O is increasing the biodiversity of the orchard. QUESTION 21 Which of the following components is NOT involved in the phosphorus cycle? O Producers O Consumers O Some rocks and soil ?The atmosphere O Decomposers QUESTION 22 Bacteria that live in deep-sea thermal vents use energy from inorganic hydrogen sulfide (H25) to make organic molecules from carbon dioxide and are thus O producers. O primary consumers. O secondary consumers. O decomposers. O tertiary consumers QUESTION 23 Which zone is inhabited by bottom-feeding catfish, crayfish, aquatic worms, clams, and bacteria? Benthic O Limnetic O Intertidal O Profundal O Pelagic QUESTION 24 Carbon dioxide is the only greenhouse gas. True or False? O True O False QUESTION 25 A carnivore is usually a(n) O secondary producer O autotroph. O secondary consumer. O primary producer. O primary consumerExplanation / Answer
20) The correct option is qualifies as an invasive species.
An invasive species can be any kind of living organism, which is not native to an ecosystem and causes harm. They can harm the environment, the economy and human health.
21) The correct option is the atmosphere.
The atmosphere is not involved in the phosphorus cycle.
22) The correct option is producers.
Bacteria live around deep-sea, hot-water vents. They obtain energy by oxidizing inorganic hydrogen sulphide and use this energy to the formation of organic molecules with the help of carbon that is obtained from the carbon dioxide in seawater. These bacteria are chemoautotrophs. Chemoautotrophs are extremophiles, bacteria, which live in deep sea vents and are the primary producers.
23) The correct option is Profundal.
Profundal zone is inhabited by bottom-feeding catfish, crayfish, aquatic worms, clams, and bacteria. It is a deep zone of an inland body of freestanding water, that is located below the range of effective light penetration.