This is why there are so many plants around us.If you look carefully at the plants around you, you will find that there are two kinds of plants flowering plants and nonflowering plants.Flowering plants can make seeds. The seeds are prides and by the fruits. Some fruits have one seed, ...
Most non-flowering plants do not grow from seeds. They grow from spores(孢子). Spores are small. Some spores are17small and18that they can float(漂浮)19the air. We may say that spores are quite different from seeds. When these spores20on wet and shady(阴凉的)places, they usually grow...
Flowering plants 12 make seeds(种子). The sends 13 by the fruits. Some fruits have one seed, some have two, three or four, and some have many seeds. But a few fruits have no seeds 14 . 15 example of a fruit 16 seeds is banana fruit. Most non-flowering plants do not grow from...
Plants have different mechanisms which promote cross-pollination: a) unisexual flowers, i.e. spatial separation of stamens and pistils into separate flowers; b) dichogamy –stamens and pistils mature at different times (protogyny – stigmas become receptive before the anthers mature, protandry ...
What are the essential and non-essential parts of a flower for reproduction in plants? Give two major differences between a male gametophyte of moss and an angiosperm. What is the term used for plants that grow in saline water? Contrast apomixis with sexua...
Why can seeds stay in the soil for a long time? How does the root system in weed seedlings develop? Why have seed-bearing plants come to dominate the land? What is the role of hematopoietic growth factors? Why did ferns come before seed-bearing plants?
virgata have small leaves and were confused for a long time but differ by their flowers (green urceolate versus yellowish cup-like corolla), leaves and fruits. Both occur in dense humid forest on non-ultramafic substrates, but G. urceolata grows at higher elevation and in wetter conditions ...
I am going to plant trees tomorrow. First of all, I bought some seed, I put the seeds in the soil. Then, frequent watering, and then place it in the Sun. A few days, you can see it long plants. In a month, it can be seen it flowering ...
If you look carefully at the plants around you, you will find that there are two kinds of plants: flowering plants and non-flowering plants. Flowering plants can make seed. The seeds are protected by the fruits. Some fruits have one seed, some have two, three or four, and some have ma...
I am going to plant trees tomorrow. First of all, I bought some seed, I put the seeds in the soil. Then, frequent watering, and then place it in the Sun. A few days, you can see it long plants. In a month, it can be seen it flowering ...