One day, a little crab came to the coral kingdom. From the moment he stepped into the coral kingdom, the little crab was fascinated by the scenery in front of him.
Look, red, pink, yellow, green and purple, colorful "flowers" have everything. Some of them are like a cluster of antlers, some are like red berries in the snow, some are like beehives, and some are like proud peacocks. ...
The little crab stopped in front of the red plum blossom-shaped "flower" and studied it carefully.
"Wow, it's beautiful!" In admiration, an idea is in the little crab's mind.
Production, "whose' flower' is this? If only I could move some trees to my house to plant them! "
Thinking of this, the little crab shouted, "Whose flowers are these? Can I move a little? "
I shouted several times, but there was no reply. The little crab thought, "Maybe these are some flowers without owners, so I'm welcome!" "
"Don't, don't-"At this moment, a deep voice reached the little crab's ear, and the little crab looked around to know where the voice came from. However, all he saw was a pile of "red berries" swaying in the waves. The little crab thought he had heard wrong and waved the big aojiang to "Hongmei".
"Stop it!" Suddenly, there was a big drink not far away. The little crab looks inside and sees a clown fish swimming towards him.
"Is this your flower?" The little crab quickly said, "I want to move some trees to my house to plant them, can I?"
"What' flowers'!" "This is coral," said the clown fish. They are not plants, but animals! " "
"Impossible?" The little crab pointed to the "red berries" in front of him and said, "Isn't this a bunch of" red berries "?"
"I can't explain it to you clearly!" The clown fish said, "You'd better ask them yourself."
"But they can't talk!" The little crab said, "I shouted for a long time but no one answered!" " "
"It's not that they can't talk, it's that they are small and have small voices!"
The little crab realized that the low voice just now was originally made by coral.
So the little crab leaned over to Hongmei again and asked, "Are you an animal or a plant?"
At this time, the deep voice sounded again: "Please don't call us' Hongmei', we are coelenterates living in the sea."
"Am I right?" Clownfish proudly said, "They look a little like cranberries, but they are actually corals. This family is made up of thousands of corals. You see, "said the clown fish, pointing to a little red plum," the coral's body is cylindrical, and the' petal'-shaped things around it are actually coral tentacles, and the mouth in the center of the tentacles is coral's mouth. Coral catches food with tentacles and sends it to the mouth for digestion. "
"Oh, I see!" The little crab became interested in this little "red plum" and said, "Can I call you' little red plum'?"
"Of course!" "Little Hongmei" said softly.
"I want to see how you catch food here, can I?"
"Little Hongmei" said, "Yes!"
"Be careful not to hurt them!" The clown fish said, "You play with Little Hongmei here, and I'll play with Anemone!" "
The clown fish swam away, and the little crab carefully observed "Little Hongmei".
two
The little crab quietly waited for "Little Hongmei" to prey, but he felt hungry and didn't see "Little Hongmei" catch any food.
"Are you hungry?" The little crab couldn't hold back and said, "I know where there is delicious food." Do you want me to take you to find something to eat? "
"Thank you!" "Little Hongmei" said, "I have already eaten!"
The little crab asked in surprise, "What did you eat? I'm always by your side. Why didn't I see it? "
"Little Hongmei" said, "We corals live in groups. We are connected by bones, and our intestinal cavities are also connected by the small intestine system. Although our big family has many mouths, there is only one stomach. A sister behind me just caught some plankton, and after she swallowed it, we all ate it. "
"Wow, that's amazing!" The little crab said enviously, "whoever finds something to eat can eat it!" " "
2. Look at the picture and write about the crabs in the first grade. How to write crab (páng xiè): Animal kingdom, Arthropoda, Crustacea, Mollusca, True soft armor subclass, Decapoda, Abdominal embryo.
Suborder, short tail suborder. It is a crustacean. Its body is protected by a hard shell and breathes through its gills. In biological division
Taxonomically, it is the same kind of animal as shrimp, lobster and hermit crab. Most kinds of crabs live in the ocean or offshore areas, and also
Some live in fresh water or land. They rely on the mother crab to give birth to young crabs. Every time a female crab lays eggs, the number can reach hundreds.
More than ten thousand capsules. Crabs rely on the geomagnetic field to judge their own direction. The amount of genetic material of such organisms is complex and varies greatly.
Sex, often as many as 100 pairs. Common crabs are hairy crabs (river crabs, hairy crabs, clear water crabs) and swimming crabs. China crab
Resources are very rich. There are Gucheng Lake hairy crabs, Taihu Lake hairy crabs, Gaoyou Lake hairy crabs and Yangcheng Lake hairy crabs in the lower reaches of the Yangtze River.
The crabs produced by Zhaxie Crab, Xielou Crab, Xinghua Crab and Hongze Lake Crab are top grade.
look
The high-quality crab's carapace is blue-gray, shiny, with a white abdomen, yellow hair on its golden claws, bright color and round and smooth navel.
Protruding, limbs firmly connected into an arc, big and healthy. If the back is yellow, the meat is thin. In addition, if it is
Strong activity, crawling crabs are strong and good crabs.
Weigh by hand
For crabs whose visual appearance meets the requirements, they need to be weighed one by one, and the ones with heavy hand feel are fat crabs. This move is uncomfortable.
Used for river crabs and live sea crabs, because these crabs are often tied.
fruit peel
Peel off the navel of the crab. If there are many neat and condensed crabs in the shell, this crab is a good crab.
Pull
If you buy a dead sea crab, you should observe the crab's leg. It is intact. Gently pull the crab's leg, the elasticity is weak, indicating that it is fresh sea.
Crabs, if not fresh sea crabs, gently pull the crab legs, which is not only not weak, but also easy to break.
smell
If you smell the fishy smell of sea crabs, it means that the sea crabs have gone bad and can't be eaten any more. Eating spoiled sea crabs is easy to cause eating by mistake.
Food poisoning.
Timely consumption
Around September of the lunar calendar, female crabs have mature gonads and plump meat; After October of the lunar calendar, male crabs have mature gonads and plump meat. Therefore, it is necessary
Eat at the right time.