Joke Collection Website - Bulletin headlines - The slogan of Huaihua Festival

The slogan of Huaihua Festival

(1) Every flower has stamens and pistils, and flowers with only stamens or pistils are unisexual. Judging from the way flowers are planted, Sophora japonica is an inflorescence. The seeds contained in the fruit are developed from ovules. The number of seeds depends on the number of ovules in the ovary. That is, there are many seeds in the fruit, which means there are many ovules in the ovary.

(2) Sophora japonica has a fragrant smell and sweet nectar, which is pollinated by insects, so the pollination method belongs to cross pollination.

(3) Innate behavior refers to the innate behavior of animals, which is determined by the genetic material in animals. It is called innate behavior, for example, bees gather honey, ants build nests, spiders weave webs, bird migration and so on. Innate behavior is an instinctive behavior of animals and will not be lost.

(4) In the process of individual development, bees go through four stages: egg, larva, pupa and adult, which is called complete metamorphosis. There are obvious differences in morphological structure and living habits between completely metamorphosed larvae and adults, such as butterflies, mosquitoes, flies, Pieris rapae, silkworms and so on. Bees belong to arthropods, which have body segments, bodies, feet and antennae. They have exoskeletons on the body surface and cannot grow with the body.

(5) Whether Sophora japonica honey contains vitamin C, the experimental design is as follows:

① Take two clean test tubes A and B, and inject 2 ml potassium permanganate solution into each test tube.

② Drop the diluted Sophora japonica honey into tube A with a dropper, and drop the same amount of water into tube B while shaking, and observe the color change of the solution in the tube.

(3) If the color of the solution in test tube A is lighter or lighter than that in test tube B, it indicates that Sophora japonica honey contains vitamin C..

So the answer is: (1) inflorescence; Multiple ovules; (2) It has fragrant flowers and sweet nectar; ③ Congenital; (4) Four eggs, larvae, pupae and adults; Body division, body, feet and antenna division; ⑤ Potassium permanganate; Equal amount of clear water