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- Multiple ChoicePlease save your changes before editing any questions.
下面是 X植物的种子的资料。
Information below is about seed plant X .
- 细小而轻盈 small and light
- 长有钩刺 Have hooks
X 植物的种子依靠哪种媒介传播？
Which is the following dispersal agents of plant X?
水 Water
风 Wind
动物 Animal
自动爆裂 Explosive mechanism
- Multiple ChoicePlease save your changes before editing any questions.
靠水力传播的种子有以下哪种特征？
Which is the following characteristics disperses its seed by water?
果肉香甜
Its flesh is sweet and has nice smell
有伞状的结构
Has wing-like structure
果实成熟后会裂开
Its fruit wall splits when it ripe
果实里有空气，形成气室
Husk with air spaces
- Multiple ChoicePlease save your changes before editing any questions.
上图显示四种植物的果实。
Diagram above shows the fruits of four types of plants.
哪两种果实有相同的传播方法？
Which of the following two types of plants has similar method of dispersal?
P & Q
P & S
Q & R
R & S
- Multiple ChoicePlease save your changes before editing any questions.
下面哪项说明了植物传播种子的重要性？
Which of the following explanation is the important of seed dispersal?
为了制造食物
To produce food
为了防止动物绝种
To prevent extinction of animals
为了避免被人类大量采摘
To avoid being plucked by humans
为了确保物种能继续生存
To ensure the survival of the plant species
- Multiple ChoicePlease save your changes before editing any questions.
上图显示一种植物的果实。
Diagram above shows a fruit of a type of plant.
上述植物如何传播种子或果实？
How does this plant disperse its seeds or fruit?
靠风力传播
By wind
靠水力传播
By water
靠自动爆裂传播
By explosive mechanism
靠动物或人类传播
By animals or humans
- Multiple ChoicePlease save your changes before editing any questions.
以下都是椰子靠水力来传播的外形特征， 除了。。
Which of the following is not the characteristic of coconut to disperse their fruit by water?
有钩刺
Has hook
有纤维层
Has husk
外皮有蜡质层
Has waxy covering
里面有空气， 形成气室
With air spaces
- Multiple ChoicePlease save your changes before editing any questions.
哪项种子或果实的特征和传播方法搭配是正确的？
Which characteristic of fruit or seeds is correctly matched with its way of dispersal?
有钩刺 - 风力
Has hooks - Wind
外皮有蜡质层 - 水力
Waxy skin - Water
细小和 轻盈 - 自动爆裂
Small and light - Explosive mechanism
干瘪和爆裂 - 动物
Dry and burst - Animals
- Multiple ChoicePlease save your changes before editing any questions.
面对干旱季节，橡胶树会以什么方法来适应干旱季节？
落叶
卷曲叶子
针状叶子
容易弯曲的茎
- Multiple ChoicePlease save your changes before editing any questions.
以下哪项是仙人掌面对干燥的沙漠气候而拥有的特殊特征？（答案可以超过一个）
针状叶
储存水分的茎
伸张的根
羽状的叶子
- Multiple ChoicePlease save your changes before editing any questions.
大王花 (莱佛士花）的自卫方法是什么？
胶乳
臭味
毒素
细毛
- Multiple ChoicePlease save your changes before editing any questions.
1 下列哪两种植物的自卫方式是 “刺” ?
海檬果
玫瑰
黄梨
芋头
- Multiple ChoicePlease save your changes before editing any questions.
2 下列哪三种植物的自卫方式是 “胶乳” ？
橡胶树
芋头
夹竹桃
木瓜
- Multiple ChoicePlease save your changes before editing any questions.
3 下列哪两种植物的自卫方式是 “细毛” ？
莱佛士花
甘蔗
虎尾兰
竹子
- Multiple ChoicePlease save your changes before editing any questions.
4 下列哪两种植物的自卫方式是 “毒素” ?
海檬果
烟草叶
九重葛
夹竹桃
- Multiple ChoicePlease save your changes before editing any questions.
5 下列哪两种植物的自卫方式是 “臭味” ?
薰衣草
烟草叶
莱佛士花
橡胶树
- Multiple ChoicePlease save your changes before editing any questions.
6 椰树拥有（A）叶，而且（B）部有弹性，可以抵御强风的吹袭。
A 羽状
A 针状
B 茎
B 根
- Multiple ChoicePlease save your changes before editing any questions.
以下哪项有关植物与其自卫方式的搭配是正确的？
海檬果 - 分泌胶乳
羊角豆 - 细毛
栗子 - 散发臭味
驱蚊草 - 有毒素
- Multiple ChoicePlease save your changes before editing any questions.
下图显示一棵生长在海边的椰树。椰子成熟后会掉落, 并随着水漂流到远处。为什么？
确保幼苗获得充足的水分
椰子靠水力传播种子到它处
海浪的推力使椰子飘得更远
减少幼苗与母树之间的竞争
- Multiple ChoicePlease save your changes before editing any questions.
子汉把一些幼苗种植在一个容器里。一个月后，他发现这些幼苗长得很矮小。子汉应该如何做，才能是这些幼苗长得更茁壮？
大量地往土壤里浇水和施肥
把全部幼苗移植到新的容器
将幼苗放置在阳光充足的室外
把一部分幼苗移植到其他容器
- Multiple ChoicePlease save your changes before editing any questions.
玉蜀黍和香蕉叶都有卷曲的叶片。这种特征有什么功能？
适应季节的转换
减少水分的流失
使动物的皮肤发痒
抵御强风的吹袭