Question

if a plant is living in a cold environment, which physiological change would help the most with the cool temperatures?
oa. increased ability to resist pesticides
ob. shift in membrane lipids to more fluid types
oc. development of a heat shock protein
od. ability to photosynthesize in anaerobic conditions

Explanation:

植物细胞膜的流动性会受温度影响。在寒冷环境中，细胞膜脂质向更具流动性的类型转变（如不饱和脂肪酸含量增加等），能维持细胞膜的正常功能，保证细胞与外界的物质交换等生理活动正常进行。抗农药能力（A选项）与应对寒冷无关；热激蛋白（C选项）通常与应对高温等胁迫有关；在厌氧条件下进行光合作用（D选项）也和应对寒冷环境没有直接关联。

Answer:

B. shift in membrane lipids to more fluid types