题目内容双击单词支持查询和收藏哦～
收藏
纠错
题目材料：
Seeds of wild plants generally have thick coats that allow them to survive in the ground until the next growing season. But with domesticated plants, seeds are not sown until the growing season begins. Accordingly, within a given domesticated species, plants with thinner- coated seeds, which germinate more quickly, are advantaged, since quicker germination enables a plant to shade out its slower neighbors, thereby increasing its likelihood of surviving to harvest and contributing seeds to the next planting.
The information given, if accurate, provides the strongest justification for which of the following caims?
-
A.the wild, a plant gains no reproductive advantage if its seeds germinate before the seeds of other plants
-
B.The relative thickness of the coats of the seeds of two
species of domesticated plants reliably indicates which of the plants will grow more quickly.
-
C.A wild plant such as the Chiltepin, whose seeds have extremely thick coats that ensure that they survive the digestive systems of animals, will be at a disadvantag
compared to a wild plant whose seed coats protect only against cold.
-
D.The cache of Chenopodium seeds found at a 3,500-year-old cave dwelling, whose coats are significantly thinner than those of Chenopodium known to have
grown wild then, supports the hypothesis that the plant had been domesticated by that time.
-
E.That one of two seeds of the same domesticated species has a thicker coat than the other is evidence that the seed with the thicker coat came from a plant
grown in the colder climate.
D显示答案
