Adaptation of Living Things Certain animals and plants develop characteristics that help them cope with their environment better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter, in providing protection, and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments. Each living thing is adapted to its way of life in a general way, but each is adapted especially to its own distinct class. A plant, for example, depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals. It depends upon its green leaves for using the suns energy to make food from inorganic chemicals. These are general adaptations, common to most plants. In addition, there are special adaptations that only certain kinds of plants have. Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape, and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near. Organisms have a great variety of ways of adapting. They may adapt in their structure, function, and genetics; in their development and production of the young; and in other respects. An organism may create its own environment, as do warm-blooded mammals, which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage, but sometimes an organism is so well adapted to a particular environment that if conditions change, it finds it difficult or impossible to readapt to the new conditions. 1. Some plants and animals develop superior characteristics so that they may A) help others of their kind get food, shelter and other things needed. B) survive even in extremely severe conditions. C) become better adapted to the environments than others of their kind. D) result in the evolution and production of more intelligent organisms. 2. In the first paragraph, the word environments could best be replaced by A) contexts. B) surroundings. C) neighbors. D) Enemies. 3. It can be inferred from this passage that the feathers of a bird are colored A) to frighten its enemies. B) to attract its enemies. C) to adjust its body heat. D) to match its environment 4. Which of the following is not directly mentioned in the passage? A) A living thing way adapt in its structure. B) An organism may adapt in its function. C) A living creature may adapt in its genetic makeup. D) A living organism may adapt in its sleeping habit. 5. The author cites the behavior of warm-blooded mammals in order to that a living thing may have the ability A) to create an environment of its own. B) to remain still when an enemy is near. C) to make food from inorganic chemicals. D) to change the color of its skin. KEYS: CBDDA
国际英语资讯:Abes shock resignation presents uncertainties for Japan
体坛英语资讯:Turkish champions withdraw from UEFA Champions League
The Things I Learn in College 我在大学学到的东西
国际英语资讯:UN Alliance of Civilizations chief condemns burning of Quran in Sweden
体坛英语资讯:World No. 4 paddler Guo Yan steps on podium twice at China Open
体坛英语资讯:Worlds leading hurdlers safely advance in Daegu worlds
体坛英语资讯:Turkeys Trabzonspor replaces Fenerbahce in Champions League draw
体坛英语资讯:France beats Albania 2-1 in Euro 2017 qualifiers
国际英语资讯:Top U.S. general says military wont play role in 2020 election
体坛英语资讯:USA takes revenge on Brazil to retain World Grand Prix title
体坛英语资讯:Zvonareva battles into 4th round, Sharapova out of U.S. Open
体坛英语资讯:Arsenal reaches agreement with Man City for Nasri move
体坛英语资讯:Nadal, Murray, Del Potro reach U.S. Open third round
体坛英语资讯:Santos defeats Fluminense 2-1
国际英语资讯:Trumps acceptance speech draws fewer viewers than Bidens: data
国际英语资讯:Tanzanias ruling party launches Magufulis re-election campaign
体坛英语资讯:Bolt steals limelight, Russian topples record
体坛英语资讯:Djokovic eases through, French Open champ Li exits at U.S. Open
体坛英语资讯:Usain Bolt: I have nothing to say right now
体坛英语资讯:Bayern wins, Cologne stuns Hamburg at German Bundesliga
体坛英语资讯:Barca beat Villarreal 5-0 to kick off the season on perfect note
体坛英语资讯:Rodriguez takes stage and overall lead in Vuelta
体坛英语资讯:Granada return with defeat, Valencia and Real Sociedad win in Spain
国际英语资讯:Peru extends emergency for 90 days amid COVID-19 resurgence
体坛英语资讯:Six athletes elected to IAAF Athletes Commission
国际英语资讯:Chinese medical experts help South Sudan strengthen fight against COVID-19
体坛英语资讯:Athletic in Europa League group stage without kicking a ball
体坛英语资讯:Error-prone French Open champ Li exit from U.S. Open
体坛英语资讯:Djokovic, Nadal, Serena advance, Li Na out in U.S. Open
体坛英语资讯:Messi awarded Europe best player
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |