Other qualities of flowering Plants
Although flowers and their contents are the significant innovations that angiosperms, they space not the only ones. Angiosperms likewise have an ext efficient vascular tissues. Additionally, in numerous flowering tree the ovaries ripen into fruits. Fruit are frequently brightly colored, so pets are most likely to see and eat them and disperse their seed (see Figure below).
You are watching: Select the correct statement describing the life cycle of angiosperms.
Brightly colored fruit attract animals that might disperse your seeds. It’s hard to miss the shining red apologize on these trees.
Evolution of flowering Plants
Flowering plants are thought come have evolved at the very least 200 million years earlier from gymnosperms choose Gnetae. The earliest recognized fossils of flowering plants are around 125 million year old. The fossil flowers have actually male and female reproductive organs however no petals or sepals.
Scientists think the the earliest flowers attracted insects and also other animals, which spread out pollen native flower to flower. This considerably increased the efficiency of fertilization end wind-spread pollen, which might or could not in reality land on another flower. Come take better advantage of this “animal labor,” plants progressed traits such as brightly fancy petals to attract pollinators. In exchange because that pollination, flowers offered the pollinators nectar.
Giving totally free nectar come any pet that occurred to come follow me was not an reliable use that resources. Much of the pollen can be lugged to flowers of different types and therefore wasted. Together a result, numerous plants advanced ways come “hide” their nectar native all however very particular pollinators, which would certainly be much more likely to visit just flowers of the same species. For your part, animal pollinators co-evolved characteristics that enabled them to obtain to the hidden nectar. Two examples of this type of co-evolution are shown in Figure below.
See more: A Major Disadvantage Of Primary Data Collection Is, Chapter 10 Mkt Flashcards
The hummingbird has actually a long narrow invoice to with nectar at the bottom the the tube-shaped flowers. The bat is energetic at night, for this reason bright white, night-blooming flowers lure it. In every case, the flower plant and also its pollinator co-evolved come become better suited because that their functions in the symbromheads.tvtic relationship.
Some that the most recent angiosperms come evolve space grasses. People started domesticating grasses such as wheat around 10,000 year ago. Why grasses? lock have numerous large, edible seeds that save a the majority of nutritious stored food. They space also relatively easy to harvest. Since then, humans have helped shame the evolution of grasses, as illustrated by the example in Figure below. Grasses supply most of the food spend by civilization worldwide. What various other grass seeds carry out you eat?