Question

1.suppose that a popoulation of palnts there is a wide range of flower size. a few palnts produce flowers that only 1 cm wide.a few produce flowers that 6cm size, and most produce flowers that are 3-4 cm size. sketch the graph that shows one way that you could present this information clearly.imagine that there is only species of insect living in this area that is small enough to pollinate th 1 cm wide flowers, and that these flowers can not reproduce seeds unless pollinated. that one species of insect become extinct. describe consequence in term of evolution of this population of plants.

2.explain one way in which ceitain bacteria benefic nearly all other living orangnism.

Answer 1

1.

The flowers of 1 cm wider flower plants are pollinated by the particular insect species. If the insect species become extinct then pollination will not be pollinated. Now there will be no seed formation in these plants. So, the 1 cm wider flower plants can't survive for the next generation and they become extinct. The remaining plants may survive for the next generation but there is a loss of genetic diversity which may lead to the extinction of remaining plants in future.

2. Bacteria are not always pathogenic, sometimes they may be beneficial for living organism. There are ample examples of symbiotic bacteria in our surroundings. Rhizobium, a symbiotic bacteria lives in the root nodules of leguminous plant. The bacteria fix nitrogen from atmosphere and supply it to the plant. The plant gives it food and shelter.

The hind gut of human contains E. coli, a bacteria that produces vitamin K and vitamin B complex. Both the vitamins are necessary vitamins for human health. In return, the bacteria gets food and shelter in the human body.