题目内容
（请给出正确答案）
Green plants combine ______ with water and carbon dioxide to make food.
A．energy derived from light
B．energy, derived it from light
C．energy is derived from light
D．from light, and energy derived
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更多“Green plants combine ______ wi…”相关的问题
A.a green crown
B.a green song
C.a green thumb
D.a green pond
A、green HOUSE(=house painted green)
B、GREENHOUSE(=glass house for growing plants
Small plants like grasses and herbs are grown widely on intensive green roofs.
A．Right
B．Wrong
C．Not mentioned
Small green plants are very important to dry places because______.
A．they don't let the sun make the earth even drier
B．they don't let the wind blow the earth away
C．they hold water
D．all of the above
A、green 'house (=house painted green)
B、'greenhouse (=glass house for growing plants)
A.improve the efficiency of it
B.turn plant sugars to a new form. of energy
C.make green plants a new source of energy
D.get more sugars and starches from plants
A.donate
B.check
C.withhold
D.release
2. The fruit color of squash is controlled by two pair of genes W (white) /w and Y (yellow) /y (green). When two plants with white fruit color cross each other, the phenotype of offspring is White: Yellow: Green = 12:3:1. Question: (1) What are the genotype of parents with white fruit color？ (2) Which is the interaction type of these two non-allelic？ (3) What are the genotypes of white, yellow and green fruit plants in the offspring？ (4) If the white fruit color plants in the offspring cross with a green fruit color plant, half of the offspring are yellow. What is the genotype of the white fruit color plant？ Why？
2. On the sixth chromosome of maize, there are two pairs of genes: P(purple stem)/p(green stem) and H(high stem) and h (low stem). The genetic distance between them is 20cM. When plants with PH/ph cross each other, the questions are: (1) What are the gametes and their proportion？ (2) In the offspring, what is the proportion of plants with ph/ph？ (3) In the offspring, what is the proportion of plants with purple and low stem？
A. continuous
B. continual
C. continually
D. continuously
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