0) The following experiment is used for the following question vered a species o

Question

0) The following experiment is used for the following question vered a species of moth that lays its eggs on oak trees. Eggs are laid at two distinct times of the year: lowering and in midsummer when flowering is past. Caterpillars from eggs that A researcher discove early in spring when the oak trees are f flowers and look like oak flowers, but caterpillars that hatch in summer feed on oak leaves and look like oak twi ? To answer this He put at least one How does the same population of moths produce such different-looking caterpillars on the same trees question, the biologist caught many female moths from the same population and collected their eggs. egg from each female into eight identical cups. The eggs hatched, and at least two larvae from each female were maintained in one of the four temperature and light conditions listed below. emperature ay Length ringlike pringlike ummerlike ummerlike ringlike Summerlike ringlike summerlike In each of the four environments, one of the caterpillars was fed oak flowers, the other oak leaves. Thus, there were a total ofeight treatment groups (4 environments × 2 diets) hich one of the following is not a plausible hypothesis that can be tested in this experiment A) Th e longer day lengths of summer trigger the development of twig-like caterpillars B) The cooler temperatures of spring trigger the development of flowerlike caterpillars. C) D ifferences in air pressure, due to differences in elevation, trigger the development of different types of caterpillars D) Differences in diet trigger the development of different types of caterpillars 11) Agrobacterium infects plants and causes them to form tumors. You are asked to determine how long a plant must be exposed to these bacteria to become infected. Which of the following experiments will provide the best data to address that question? A) Determine the survival rate of Agrobacterium when exposed to different concentrations of an antibiotic B) M easure the number of tumors formed on a plant when exposed to various concentrations of Agrobacterium. C) Measure the concentration of Agrobacterium in different soil environments where the plants grow D) Measure the number of tumors formed on plants, which are exposed to Agrobacterium for different lengths of time 12) The temperature at which an alligator's egg is incubated will determine the sex of the offspring. The dependent and the independent variables in this experiment are A) sex of the baby alligator and temperature respectively C) size of the incubator and size of the baby alligator respectively D) number of offspring and temperature in the incubator respectively B) temperature and sex of the baby alligator respectively 13) About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements make up approximately 96% ofliving matter? A) carbon, sodium, hydrogen, nitrogen C) oxygen, hydrogen, calcium, nitrogen B) carbon, oxygen, phosphorus, hydrogen D) carbon, hydrogen, nitrogen, oxygen 14) Which of the following is broken when water evaporates? A) nonpolar covalent bonds B) ionic bonds C) hydrogen bonds D) polar covalent bonds

Explanation / Answer

for ques. before 11) correct answer is " C "(that is , differences in air pressure , due to differences in elevation, trigger the development of different types of caterpillars)

for ques. 11) correct answer is " D ".

for ques. 12) correct answer is " A "

for ques. 13) correct answer is " D "

for ques. 14) correct answer is " C "

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