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【判断题】

温暖、干燥的气候条件有利于板栗白粉病的发展。 ( )

A.
正确
B.
错误
题目标签:白粉病干燥板栗
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参考答案:
参考解析:
.
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举一反三

【单选题】FruitImagine a world without fruit. We wouldn’t be very healthy. We get a lot of important vitamins from eating fruit.We think of fruit primarily as something to eat._____(26)Fruit is part of a flower...

A.
Dry fruits are thin and hard.
B.
We even make alcohol from fruit.
C.
But fruit has a purpose quite apart from our needs.
D.
So these plants produce fleshy fruits.
E.
Then the seeds grow into new plants.
F.
But the plants grown from these seeds are seedless.

【单选题】葡萄白粉病菌无性孢子是()

A.
子囊孢子
B.
游动孢子
C.
担孢子
D.
分生孢子

【单选题】白粉病的典型症状是( )

A.
叶面上有锈黄色粉层
B.
植物发病部位有黑粉
C.
植物发病部位有灰白色粉层
D.
由叶尖、叶缘向内逐渐枯死

【单选题】板栗的果实生于壳斗内,其壳斗的特点是()

A.
小苞片呈分枝刺
B.
苞片鳞形
C.
苞片线形
D.
苞片钻形