
Untitled Quiz
Quiz
•
Biology
•
3rd Grade
•
Hard
Ping Lu
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
树是地球上最复杂、最成功的植物种群之一,19亿年前,地球上最早出现的绿色植物是?
柳树
橡树
衣藻
松树
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
树与人类进化发展密切相关,古人猿从下地爬行到直立行走,最重要的进化事件是?
树叶蔽身
架木为巢
木构水井
钻木取火
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
树木的生长过程中通过光合作用制造出供人类和动物呼吸的氧气,这个过程也是树木生长的过程,光合作用是指?
吸收二氧化碳,释放氧气
吸收氧气,释放二氧化碳
吸收氮气,释放氧气
吸收氧气,释放氮气
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
树木的年轮在北半球和南半球的生长规律分别是?
北疏南密,南密北疏
北密南疏,南疏北密
北疏南密,南疏北密
北密南疏,南密北疏
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种树是世界上最轻的木材,重量每立方厘米只有0.1克?
黑黄檀
铁梨木
巴沙木
箭毒木
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
树种6万多种,其中有些木材是以颜色来命名的,下列哪种木材是心材颜色灰褐或灰紫色?
紫光檀
美国鹅掌楸
东非黑黄檀
紫心木
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
森林对人与自然的贡献主要体现在以下哪个方面?
增加空气污染
促进气候变化
减少噪音
加速土壤侵蚀
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