Describe the unusual pollination system used by orchids of the genus Catasetum, which are pollinated by male euglossine bees
What will be an ideal response?
The male flower attracts the bee by using a chemical similar to that used by bees to attract mates, and then shoots a pollinarium that adheres to the back of the bee. This pollinarium is then carried to the female flower, where it lodges onto the stigmatic cleft.
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The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats
Which of the following is most directly involved in the evolution of these variations in metamorphosis? A) artificial selection of sexually immature forms of insects B) changes in the homeobox genes governing early development C) the evolution of meiosis D) the development of an oxidizing atmosphere on Earth E) the origin of a brain
Which of the following is closest to a micrometer in size?
A) the width of a strand of DNA B) the length of a plant cell C) the length of a chicken egg D) a typical prokaryotic cell E) the size of a ribosome
The flight muscles of insects:a
result in a heat-deficit problem for insects. b. contain more mitochondria than any known variety of muscle. c. only contract in direct response to stimulation by nerves. d. are capable of supporting flight under a wide range of cool, warm, and hot temperatures. e. can be insulated by feathers, scales, or fur.
Pollutants of water include both living organisms and nonliving materials
Indicate whether the statement is true or false