Question 2: What are the characteristics of rape flowering? Rape flowers are bisexual, and radiation Gong said that there are four petals arranged in a cross. Stamens are usually 6, 4 long and 2 short, which are usually called "four strong stamens". The pistil consists of two carpels, and the ovary is located on the upper side. Stems cylindrical, much branched; Leaves alternate, large, dark green, without petioles and stipules. In March and April, there are flowers at the top of the stem, racemes, four sepals, yellow-green, four corollas, yellow and cross-shaped.
Question 3: What does rape flower spread? What are the characteristics of its fruit? Rape flowers spread seeds through fruits. When the fruit cracks violently, it produces mechanical force or jet force, which makes the seeds scatter. Cracked fruit in dried fruit becomes a dry and hard structure when the peel matures. Because of the different arrangement of thick-walled cells in each layer of the peel, with the change of water content in the peel, it is easy to crack when contracting, thus ejecting the seeds and scattering them far away.
Mode of plant transmission:
1. Natural reproduction. The so-called natural transmission means that creatures in nature spread through the wind in nature, and generally lighter plants can float in the air. For example, some peels and seed coats of dandelion, pine, maple, elm and other plants spread like wings;
2. spread by animals. For example, some other animals eat the seeds in their stomachs, and because they can't be digested, they are discharged with feces and spread in all directions.
3. Sow by the fruit itself. When the fruits of some plants crack violently, mechanical force or jet force will be generated to spread seeds. Cracked fruit in dried fruit becomes a dry and hard structure when the peel matures. Because of the different arrangement of thick-walled cells in each layer of the peel, with the change of water content in the peel, it is easy to crack when contracting, thus ejecting the seeds and scattering them far away. Such as lentils, soybeans, rape, sesame and other cash crops;
4. spread by water. Those are plants that grow in water or swamps, such as lotus and coconut. Lotus seeds are usually transported by water. When the coconut is ripe, it falls into the sea and floats away with the sea.
Question 4: What are the morphological characteristics of rape flowers? Look at the picture, nipic/show/2/8/70d18b3de314c790.
Question 5: What are the morphological characteristics of rape flowers? Look at the picture, nipic/show/2/8/70d18b3de314c790.
Question 6: Rape is characterized by black or brownish black, small spherical shape, smooth surface (if it doesn't look smooth, it may take too long to germinate), slightly bitter, similar to radish seeds.
Question 7: What shape is the rape flower? The shape of rape flower:
Basal leaves convolute, cauline leaves, usually alternate, without stipules. The flowers are bisexual, with four petals arranged in a cross. Stamens are usually six, four long and two short, which are often called "four strong stamens". The pistil consists of two carpels, and the ovary is located on the upper side. Stems cylindrical, much branched; Leaves, large, dark green, without petiole and support; In March and April, there are flowers at the top of the stem, racemes, four calyxes, yellow-green, four corollas, yellow and a cross.