Why are the stems of some plants empty in the middle?
If you cut the stem of a plant and observe its cross-section, you’ll find that the typical structure of a plant stem is as follows: The outermost layer is the …
The crop has no nostrils, so why do they keep breathing?
People constantly breathe in oxygen and exhale carbon dioxide. This is true for humans, as well as for animals like cows, horses, dogs, and pigs. However, it’s peculiar that crops, …
Since the earth’s center has gravity, why does the plant grow upwards?
Eighty years ago, the renowned British biologist Newton observed a peculiar phenomenon: when apples fell to the ground, he wondered why they didn’t go upwards. After conducting research, it was …
Why sprout face to the sun grow?
Eighty years ago, the famous British biologist Darwin discovered a strange phenomenon: seedlings of rice and wheat would bend towards the direction of sunlight when exposed to it. However, if …
Where did the first seed of the plant come from?
Many people like to ask questions such as: which came first, the chicken or the egg? Where did the first chicken egg come from? In the past, no one could …
Why can squid squirt ink?
Squids have a “ink sac” inside their bodies, filled with ink. When we cut them open with a knife, the ink flows out, staining everything in deep black. This is …
Why can some shellfish grow among rocks?
Birds and mammals, as well as fish, shrimp, and insects, are generally powerless against rocks. However, there are several types of marine mollusks that possess a remarkable ability to bore …
Why does an ant die when you put a little salt on it?
The leech, also known as a water leech, has a sucker at both ends of its body. When it feeds on blood, these suckers tightly attach to the skin of …
Do earthworms have lungs?
Higher vertebrates such as horses, cattle, and sheep breathe using lungs. Among fish, except for lungfish which have primitive lungs, others primarily use gills for respiration. Earthworms, being lower animals, …
Why do wooden ships sailing on the sea get infested with woodworms?
Some fishermen’s newly acquired wooden boats, after only a few months at sea, are riddled with holes on the hull and become unusable. Is it the work of termites? But …