For pollen to be released in Crotalaria the insect must depress the : ? A. wing ...
For pollen to be released in Crotalaria the insect must depress the :
?
A. wing
B. keel
C. standard
D. antepetalousstamen
E. antesepalous stamen
Homework Answers
B. Keel
Producing seeds is the major purpose of flowers. For pollen to be released in Crotalaria the insect (like bee) must depress the keel of the flower and stimulate the stigmatic surface to have good consistent seed set.
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For pollen to be released in Crotalaria the insect must depress
the :
?
A. wing ...
The figure below shows a crude model of an insect wing. d2 di m F The...
The figure below shows a crude model of an insect wing. d2 di m F The mass, m, represents the entire mass of the wing, which pivots about the fulcrum, F. The spring represents the surrounding connective tissue. Motion of the wing corresponds to vibration of the spring. Suppose the mass of the wing is 0.285g and the effective spring constant of the tissue is 4.56E-4 N/m. Distance d, = 3.17 mm and distance d2 = 1.47 cm. If the...
homologous structures uniformity analogous structures natural selection e. measured by reproductive success f. insect wing and...
homologous structures uniformity analogous structures natural selection e. measured by reproductive success f. insect wing and bird wing g. survival of the fittest h. characteristic of radioisotope 11. Match the person with the correct description. Charles Darwin Jean-Baptiste Lamarck Alfred Wallace Georges Curvier Thomas Malthus a. Naturalist who entertained the idea of common ancestry b. Proposed that many species had become extinct c. Believed species become more perfect over time d. Individuals of a population must compete w/each other e....
The bunchberry flower has the fastest-moving parts ever seen in a plant. Initially, the stamen are...
The bunchberry flower has the fastest-moving parts ever seen in a plant. Initially, the stamen are held by the petals in a bent position, storing elastic energy like a coiled spring. As the petals release, the tips of the stamen act like medieval catapults, flipping through a 60 ∘ angle in just 0.30 ms to launch pollen from the anther sacs at their ends. The human eye just sees a burst of pollen; careful photography(Figure 1) reveals the details. As...
0.08t The size P of a certain insect population at time t (in days) obeys the...
0.08t The size P of a certain insect population at time t (in days) obeys the function P(t)- 600 e (a) Determine the number of insects at t-0 days. (b) What is the growth rate of the insect population? (c) What is the population after 10 days? (d) When will the insect population reach 960? (e) When will the insect population double?
*10. The size P of a certain insect population at time t (in days) obeys the...
*10. The size P of a certain insect population at time t (in days) obeys the function P(t) = 100 e 0.04 (a) Determine the number of insects at t=0 days. (b) What is the growth rate of the insect population? (c) What is the population after 10 days? (d) When will the insect population reach 140? (e) When will the insect population double? (a) What is the number of insects at t= 0 days? insects (b) What is the...
Which of the following are made of single cell? a. spore b. pollen grain c. seed...
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4) What mass of natural gas (CH4) must burn so that the heat released by the...
4) What mass of natural gas (CH4) must burn so that the heat released by the reaction CH4(g)2 O2(g) CO2(g)+2 H20(g) is 267 kJ. The molar mass of CH4 is 16.0 g mol. The standard enthalpies of formation of some of the substances in the reaction are: AH (CH (g))-74.81 kJ mol AH (CO2(g)-393.509 kJ mol AHP(H20(g)-241.818 kJ mol a) 0.223 g b) 3.57 g c) 0.280 g d 0.623 g e) 1195 g f) 467 g
The acceptable level for insect filth in a certain food item is 5 insect fragments (larvae,...
The acceptable level for insect filth in a certain food item is 5 insect fragments (larvae, eggs, body parts, and so on) per 10 grams. A simple random sample of 60 ten-gram portions of the food item is obtained and results in a sample mean of x = 5.7 insect fragments per ten-gram portion Complete parts (a) through (c) below. (a) Why is the sampling distribution of x approximately normal? A. The sampling distribution of x is approximately normal because...
Wing Foot is a shoe franchise commonly found in shopping centers across the United States. Wing...
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Suppose that a sample of peanut butter contains 0.5 insect fragments per gram. Compute the probability...
Suppose that a sample of peanut butter contains 0.5 insect fragments per gram. Compute the probability that the number of insect fragments in a 7-gram sample of peanut butter is each of the following values or range of values. Interpret each result. (a) Exactly four (b) Fewer than four (c) At least four (d) At least one (e) Would it be unusual for a 7-gram sample of this supply of peanut butter to contain six or more insect fragments?
The figure below shows a crude model of an insect wing. d2 di m F The mass, m, represents the entire mass of the wing, which pivots about the fulcrum, F. The spring represents the surrounding connective tissue. Motion of the wing corresponds to vibration of the spring. Suppose the mass of the wing is 0.285g and the effective spring constant of the tissue is 4.56E-4 N/m. Distance d, = 3.17 mm and distance d2 = 1.47 cm. If the...
homologous structures uniformity analogous structures natural selection e. measured by reproductive success f. insect wing and bird wing g. survival of the fittest h. characteristic of radioisotope 11. Match the person with the correct description. Charles Darwin Jean-Baptiste Lamarck Alfred Wallace Georges Curvier Thomas Malthus a. Naturalist who entertained the idea of common ancestry b. Proposed that many species had become extinct c. Believed species become more perfect over time d. Individuals of a population must compete w/each other e....
0.08t The size P of a certain insect population at time t (in days) obeys the function P(t)- 600 e (a) Determine the number of insects at t-0 days. (b) What is the growth rate of the insect population? (c) What is the population after 10 days? (d) When will the insect population reach 960? (e) When will the insect population double?
*10. The size P of a certain insect population at time t (in days) obeys the function P(t) = 100 e 0.04 (a) Determine the number of insects at t=0 days. (b) What is the growth rate of the insect population? (c) What is the population after 10 days? (d) When will the insect population reach 140? (e) When will the insect population double? (a) What is the number of insects at t= 0 days? insects (b) What is the...
4) What mass of natural gas (CH4) must burn so that the heat released by the reaction CH4(g)2 O2(g) CO2(g)+2 H20(g) is 267 kJ. The molar mass of CH4 is 16.0 g mol. The standard enthalpies of formation of some of the substances in the reaction are: AH (CH (g))-74.81 kJ mol AH (CO2(g)-393.509 kJ mol AHP(H20(g)-241.818 kJ mol a) 0.223 g b) 3.57 g c) 0.280 g d 0.623 g e) 1195 g f) 467 g
The acceptable level for insect filth in a certain food item is 5 insect fragments (larvae, eggs, body parts, and so on) per 10 grams. A simple random sample of 60 ten-gram portions of the food item is obtained and results in a sample mean of x = 5.7 insect fragments per ten-gram portion Complete parts (a) through (c) below. (a) Why is the sampling distribution of x approximately normal? A. The sampling distribution of x is approximately normal because...
Wing Foot is a shoe franchise commonly found in shopping centers across the United States. Wing Foot knows that its stores will not show a profit unless they gross over $940,000 per year. Let A be the event that a new Wing Foot store grosses over $940,000 its first year. Let B be the event that a store grosses over $940,00 its second year. Wing Foot has an administrative policy of closing a new store if it shows a loss...
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