Weeks of depressing work in the botany lab have culminated in yet another unsuccessful attempt to germinate your seeds. You are down to three batches of carefully packed seeds (you started with ten), and not one seedling to show for your work. Head in hands, you consult with a colleague from the California lab who sent the seeds earlier in the year. He makes a crazy recommendation but you brush it off because this colleague always has wild ideas. Later, in desperation, you decide to do it. Following his instructions carefully, you set fire to the seed packet and then put out the controlled blaze you have created. Six weeks later, you are carefully tending the seedlings and berating yourself for not having listened to him sooner. Of course! Which biome are these seeds from after all?
a. arctic tundra
b. boreal forest
c. chaparral
d. temperate forest
c. chaparral
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A. 1 B. 3 C. 4 D. 6 E. 9
Which of the following suggestions is not recommended for preventing obesity in children?
a. Provide food that is high in nutritional value. b. Make sure meals are low in fat. c. Ensure a consistent diet with little variety. d. Allow children to develop their own food preferences.
An electron microscope has a higher resolution, or ability to see small things, than a light microscope. This is because electrons
A) pass through objects more easily. B) have a smaller wavelength. C) outline specimens more readily. D) immobilize the object they are magnifying.
Filaments of a fungus that form a velvety cloak around roots or penetrate their cells aiding in the mutualistic relationship between the plant and fungus are called ____.
A. hyphae B. mycorrhizae C. root nodules D. root hairs E. Rhizobium