Question

Some plants develop flowers that are pollinated by fles.Such flowers are simple red flowers, have little odor, and provide easy access to nectar (sugar) that t attracts flies. The flies recognize the flowers by their red color and the sugar by sensors in their feet. They draw up the liquid nectar using special sucking mouthp pollen from one plant to another arts. While for aging for the nectar, the their flies transfer 37.The production of nectar by the fowers and the development of sugar sensors and specialized sucking mouthparts in the flies are the outcome of which one or more of the following a) genetic variation among the plants b) genetic variation among the flies c) natural selection in the plant population d) natural selection in the fly population e) All of the above are correct. 38. Which one or more of the following is (are) the source of ca rbon in the nectar sugar? a) Atmospheric CO2 converted into sugar in the Calvin Cycle of photosynthesis b) Atmospheric CO2 converted into sugars in the light-dependent reactions of photosynthesis. c) H20 split in the light-dependent reactions of photosynthesis d) CO2 released in the Calvin Cycle of photosynthesis e) All of the above are sources of carbon for sugar production. 39. The source of energy used during photosynthesis to synthesize sugar in the nectar is a) light energy absorbed by photosynthetic pigments b) light energy reflected by photosynthetic pigments c) heat energy absorbed by the chloroplasts d) ADP synthesized in photosynthesis e) ATP synthesized in aerobic cellular respiration 40. The flies can recognize the red flowers because red light isby the flowers and red light is by the eyes of the flies. a) reflected, absorbed c) absorbed, absorbed b) absorbed, reflected d) reflected, reflected 41. The rate at which the Oz and CO2 move in and out of the leaves is dependent on which one or more of the following? a) ambient temperature b) concentration of 02 and CO2 inside the leaves versus outside the leaves c) availability of light d) All of the above

Answer 1

37. All of the above ar e correct. As they can be adapted by natural process in some of the flies and sometimes it can be due to genetic modifications.

38. Atmospheric CO2 converted to sugars in the light dependent reactions of photosynthesis.

39. ATP synthesized in aerobic cellular respiration.

40. The flies can recognise red flowers because red light is reflected by the flowers and absorbed by there's of bees.

41. The rate at which the O2 and CO2 move in and out of leaves is dependent upon the availability of light.