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Law Incorporation [45]
2 years ago
11

19. Which of the following is the best strategy to control wheat rust?

Biology
1 answer:
valentinak56 [21]2 years ago
8 0

Answer:

B. Fungicides to treat affected crops and planting rust-resistant varieties

Explanation:

Leaf rust is a disease caused by the fungus <em>Puccinia triticina</em> which affects leaves, stems and grains in wheat and related cereals (i.e., barley and rye). This disease is known to affect crops in moist conditions. Leaf rust disease is spread through fungi spores from infected wheat plants to healthy plants. Recently, leaf rust-resistant varieties have been developed by crop improvement programs aimed at introducing leaf rust-resistant (lr) genes involved in resistance against this important crop disease. Moreover, there are different types of fungicides (e.g., Prothioconazole and Tebuconazole) used for chemical control of this disease.

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Which of the following statements about extinction is true? Choose one: A. Recent species are disappearing so slowly that resear
JulsSmile [24]

Answer:

C. At least five mass-extinction events have occurred during the last 500 million years.

Explanation:

  • The history of mass extinct is related to the five mass extinctions that are caused over by the 350 million years n which many species have disappeared in there short geologic time.
  • A massive extinction is caused in the Permian Triassic extinction event i.e about 250 mn years ago which on an estimate has killed 90% of the species.
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4 0
3 years ago
Help Please ~ 20 points
max2010maxim [7]

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6 0
3 years ago
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The use of wich material can substitute for copper and reduce copper mine production
JulijaS [17]

Answer:

There are two answers to this question. Gold or Aluminum.

6 0
2 years ago
A lab technician provides you with a bacterial pellet labeled "G3". When you observe the pellet under UV light, there is little
umka21 [38]

Answer: The two possible explanation for the outcome are as follows:

Explanation:

1. The bacterial DNA in the pellet was not completely isolated properly, therefore, no fluorescence was observed in the pellet under the exposure of UV radiation.

2. After 3 hours of induction with the IPTG and labeling with the G3. The IPGT might not be able to bound to the bacterial DNA that could show response of fluorescence in the ultraviolet light.

4 0
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A population of rodents settles on the shore of an island close to the Arctic Circle. The landscape consists mainly of rocks. If
rjkz [21]

Answer:

most likely disruptive selection

Explanation:

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