1.Under normal circumstances, when the floor where the fire broke out is above the floor you are on, you should quickly cover your mouth and nose with a wet towel and run downstairs. __
a.Correct
b.Mistake. 2.Biennial flowers grow in short days in autumn and winter, and bloom in long days in spring and summer, and are sunshine plants.
a.long
b.Short. 3.When escaping from the scene of a fire through a smoke zone, move as quickly as possible in the lowest position or in a prostrate position. Be careful, breathe to
a.Big and deep.
b.Small and shallow
4.In the event of a fire, the evacuation direction should be determined according to the wind direction at the time of the fire, and before the fire spreads, quickly leave the disaster area in the direction.
a.Downwind. b.Headwind
5.In the event of a fire, it is important to calm down and take measures to extinguish the fire as soon as possible if the fire is not large. If the fire is fierce, evacuate as soon as possible
a.Dial 119
b.Salvage property.
6.The ** of the leaf includes leaf bulbs, bulbs, bracts, leaf tendrils, and needles. Bulbs are generally edible organs. __
a.Correct
b.Mistake. 7.After the perennial vegetables are propagated at one time, the product organs are continuously harvested for many years, such as bamboo shoots, goldenrod, stone cypress, edible rhubarb, lily, toon, etc.
a.Yes
b.Cannot. 8.When you lose the ability to save yourself due to inhaling the smoke in the fire, you should try to roll towards the wall or door. At the same time, doing so will also prevent the house from collapsing and injuring yourself. __
a.Correct
b.Mistake. 9.According to the number of leaves growing on a petiole, the leaves are divided into single leaves and compound leaves. Different plants have different types of compound leaves, and among the following plants, there are three compound leaves.
a.Strawberries
b.Lichee. 10.According to the composition, the leaves can be divided into complete leaves and incomplete leaves. A leaf consisting of a leaf, petiole and pedicle is a complete leaf. __
a.Correct
b.Mistake. 11.According to the ** division of fruit formation, the fruit can be divided into real fruit and false fruit. The following fruits are false fruits:
a.Apples
b.Grape. 12.According to the composition, fruits can be divided into single fruits, aggregate fruits and compound fruits. Tomatoes belong
a.Single fruit
b.Aggregate fruit.
13.As early as the period in China, there were large areas of pear, orange, jujube, ginger, and leek plantations.
a.Xia Shang. b.Spring and Autumn Warring States
14.Dai Kaizhi of the Jin Dynasty is the earliest existing bamboo monograph in China, which summarizes the nature, morphology, classification, distribution, reproductive environment, flowering physiology and life span of bamboo, and describes in detail the name, morphology, habitat, origin and use of various bamboos.
a."Bamboo Spectrum".
b."Bamboo Treatise".
15.In the fruit of stone fruit trees, the flesh is generally the edible part.
a.Mesocarp
b.Endocarp.
16.According to whether a flower is complete or not, the flowers are divided into hermaphroditic flowers, unisexual flowers and asexual flowers.
a.Corolla. b.Stamens
17.The phenomenon of temporary pause in the growth of plant buds is called bud dormancy. The main environmental factors for potato, onion, and garlic dormancy are sunlight and temperature.
a.Grow taller
b.Short low.
18.Aquatic vegetables are cultivated in ponds or swamps, and grow in them, mainly including lotus root, water chestnut, water chestnut, water chestnut and gourd.
a.Deepwater. b.Shallow water
19.In the Han Dynasty, Zhang Qian went to the Western Regions and introduced horticultural plants such as grapes, figs, apples, pomegranates, cucumbers, and watermelons, enriching China's horticultural plant resources. __
a.Correct
b.Mistake. 20.Latent buds, also known as dormant buds, refer to buds that germinate after 1 or more years after the bud is formed, or are always dormant or gradually die. Among drupes, the latent buds of peach have a short lifespan, hence the resilience of the canopy
a.Strong. b.Weak
21.Fire smoke has the characteristics of high temperature and high toxicity, and it is easy to cause respiratory scalding or poisoning after inhalation. Therefore, cover your mouth and nose with a wet towel when escaping a fire, and try to avoid shouting loudly to prevent smoke from entering your mouth and nose. __
a.Correct
b.Mistake. 22.The effect of using low temperatures to promote the flowering of plants is called vernalization. After vernalization, the dyeing characteristics of the growing point of the plant change, and the part that feels the effect of low temperature is the apical growth point.
a.stems
b.Root. 23.During the Shennong's period, the domestication of brassica plants such as cabbage and mustard began to be introduced in the river basin, and fruit trees such as peaches, plums, and citrus were cultivated.
a.Yellow River
b.Yangtze. 24.Onions and garlic vegetables are all lily plants, mainly onions, green onions, garlic leeks, chives, etc., all of which are biennial plants, hardy, propagated by seeds or vegetatively propagated.
a.Bitterness. b.Spicy
25.Ferns are a relatively low group of higher plants.
a.Flowering. b.No flowering
26.Potato vegetables are generally resistant to storage, prefer temperature but not cold, and have a relatively long growth period
a.long
b.Short. 27.The phenomenon that plants that have reached a certain physiological age and bloom after a certain period of appropriate photoperiod treatment is called photoperiod induction. The site of the plant sensing photoperiod is:
a.stemsb.blades
28.The edible fungus vegetable black fungus is a spore plant belonging to the family Xylella. __
a.Correct
b.Mistake. 
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