Reason: The pods were exposed to the sun. With a pop, the pods exploded, allowing the beans in the pods to scatter out and take root.
Original text:
If a child has grown up, he has to say goodbye to his mother and live all over the world.
Cattle and horses have legs, and birds have wings. How do plants travel?
Mother Dandelion prepared a parachute and gave it to her doll. As long as the wind blows gently, the children will ride on the wind and set off one after another.
Xanthium's mother has a good idea. She puts on spiked armor for her children. As long as the animal's fur is hung, children can go to fields and valleys.
The pea mother had a better idea. She let the pods dry in the sun. With a pop, the pods exploded, and the children jumped away from their mother.
Plant mothers have many ways to do it. If you don’t believe me, just observe carefully. There is a lot of knowledge there, but careless children cannot get it.
Extended information:
"Plant Mother has a way" This article uses personification to vividly express scientific knowledge in the form of rhyme. The language is catchy and it is an article A popular science work that you will never tire of reading.
Relevant knowledge about bean pods:
Bean pods develop from single carpels and pistils. During the development process, a ventral suture is formed along the carpel healing point and opposite to the ventral suture. Dorsal suture. Some pods will crack along the ventral and dorsal sutures after maturity (split into two pieces after maturity), and the seeds will collapse. The pods usually contain multiple seeds that grow along the ventral suture. Occasionally, Pods with only one seed, such as Sophora japonica and Acacia japonica.
The peels of bean pods are diverse. Some species have a smooth surface like peas, some species have a hairy surface like soybeans, and some have fleshy skins like sophora pods. The sepals of the pods are present and attached to one side of the fruit pedicle.
When some types of pods mature, they will break off one by one, which is called pod pods, such as the leguminous grass of the genus Mountain Locust (flywing grass). Others such as phoenix tree, yellow butterfly, sheep's hoof beetle, erythritia, acacia, water bark, shield wood, abel, etc. are all pods.
Baidu Encyclopedia - Pods
Baidu Encyclopedia - Plant Mom has a way