問題詳情
51. A pathogenic fungus invades a plant. Which of the following does the plant produce in response to the attack?
(A) antibiotics
(B) antisense RNA
(C) phytochrome
(D) phytoalexins
(E) statoliths
(A) antibiotics
(B) antisense RNA
(C) phytochrome
(D) phytoalexins
(E) statoliths
參考答案
無參考答案
內容推薦
- Within the female gametophyte, three mitotic divisions of the megaspore produce(A) the triple fu
- The vascular system of a three-year-old dicot stem consists of(A) 3 rings of xylem and 3 of phlo
- A person suffering from AIDS would be unlikely to suffer from which of the following diseases?(A
- Consider a field plot containing 200 kg of plant material. How many kg of carnivore production c
- Which of the following combination is correct?(A) Porifera – coelomate, branch radial.(B) Nemato
- Which of the following statements about movement corridors is true?(A) A movement corridor conne
- The first plants arose during the __________ era.(A) Cenozoic (B) Mesozoic (C) Paleozoic (D) Pre
- Biomes are(A) recognized on the basis of the dominant animal life.(B) all of the populations of
- Genetic variation is the result of all but(A) the role of environment in controlling genetic exp
- Archaeopteryx(A) was a transitional form between birds and mammals.(B) had feathers and had no t
內容推薦
- Which of the following statements is false?(A) Estuaries support many semiaquatic species.(B) Ma
- Which of the following is true in the logistic model of population growth?(A) as N approaches K,
- Which of the following does not have a coefficient of relatedness of 0.5 in humans?(A) a brother
- The population cycle of the snowshoe hare and its predator indicates that(A) predators are not t
- 圖四為三國鼎立形勢圖,請問:以下何者正確?(A)三國立國的先後順序為甲→乙→丙(B)三國鼎立的局面和赤壁之戰有關(C)三國亡國的先後順序為乙→丙→甲(D)司馬睿結束了三國以來的分裂局面。
- Which of the following statements about endocrine system is false?(A) Hormones from the adrenal
- The endoplasmic reticulum and Golgi apparatus are very similar among the groups of alga-like pro
- A gastrovascular cavity, with a single opening, is the characteristic digestive system of animal
- If two modern organisms are distantly related in an evolutionary sense, then one should expect t
- How do cleavage divisions differ from normal mitotic cell divisions?(A) Cleavage divisions occur
- Cephalization is generally associated with all of the following except(A) bilateral symmetry. (B
- According to the wobble rules, a tRNA with the anticodon 5'-GAU-3' can recognize the c
- In the presence of an antibiotic prokaryotic translation can initiate, but only dipeptides that
- 有關自來水事業之經營方式,下列何者正確?(A)以公營為原則,並得准許民營 (B)以公營為原則,不得准許民營(C)以民營為原則,並得准許公營 (D)以公辦民營為原則
- In a sinusoidal-ac circuit, the current is I=I0sin(ωt +θ) . What is the rms(root-mean-square) cur
- The following organism with the greatest number of Hox genes should be a(n)(A) fish. (B) fly. (C
- A long solenoid of 500 turns carrying a current of 8 A produces within itself a uniform magneti
- A sample of 770 mol of nitrogen gas is maintained at a constant pressure of 00 atm in a flexibl
- A cylinder of mass 0 kg rolls without slipping on a horizontal surface. At the instant when it
- 右圖為均佈荷重的簡支樑,下列何者不是最大力矩(moment) M 的所在位置?(A)剪力為零處(B) dM / dx = 0 處(C)左方支點處(D)樑的中央處
- A 00-kg mass is attached to a horizontal spring. The spring is initially stretched by 0.100 m a
- What is the absolute pressure at the bottom of a lake that is 0 m deep, when the air pressure
- Suppose that the temperature at the center of the Sun is 00×107 K, what is the average translat
- When radiation of wavelength 350 nm is incident on a surface, the maximum kinetic energy of the p
- A nonconducting sphere of radius 10 cm has charge uniformly distributed throughout its volume. T