Well, it seems, once an insect gets used to living and reproducing on a certain species of plant, especially when they lay their eggs in that same plant, things start happening that aren’t so easily undone. Plants don’t always run on the same schedule, for example. Different trees may...
the fungi on which certain insects lay their eggs. Where do all these bizarre adaptations come from? Random genetic mutations in orchids may result in a trait– like a scent or a shape– that, by chance, matches the needs of a single insect species. The huge diversity within the insect w...
THE origin of species is the origin of the difference between two species. The existence of a peculiar difference between good species, which does not exist between varieties, has long been realised by systematists and others. This essential difference expresses itself, in part, in flowering ...
Evans has recently reported the inhibition of flowering in the long-day plant, Lolium temulentum, by abscisin. Thus it is pertinent to investigate whether abscisin II will stimulate flowering in short-day species. The availability of synthetic abscisinhas made it possible to carry out a, range...
The natural world provides the habitat in which people live and the backdrop for a multitude of human stories. The way nature is represented in art can elucidate or amplify these narratives. The stories of Adam and Eve and the medieval wild man are intimately tied to nature. A human figure...
of pesticides causing the decrease in plant fecundity also part of the question(like the second question in the sentence, which is whether the decrease in plant fecundity causes a decline in the overall population of flowering plant species), or it’s certain and not part of the whole ...
A new study reports that 40 percent of insectspecies are in decline and may die out within the nextcentury. In addition, a growing number of studies havebegun to show the extent of insect losses.In 2014, an international team of biologistsestimated that the amount of invertebrates(无脊椎动物...
A decline in chloroplast DNA (cpDNA) during leaf maturity has been reported previously for eight plant species, including Arabidopsis thaliana. Recent studies, however, concluded that the amount of cpDNA during leaf development in Arabidopsis remained constant. Results To evaluate alternative hypotheses ...
Paragraph 2:In tropical rain forests, the flowers of a given tree species are typically not in bloom and so cannot be observed. In seasonal rain forests (with a distinct wet season and a distinct dry season), many trees adjust their flowering to the rains, so flowering is to some extent...
of wild flowering plants that appeared unexpectedly everywhere in California this spring. As temperatures warm it is starting to die, making it easy to cause wildfires. Mustard is also a threat to native plants, transforming the landscape. Its leaves and roots prevent the growth of other species...