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Anonymous users2024-02-12Features. There is differentiation of rhizomes and leaves, flowerless and seed differentiation.
How to reproduce? Spore multiplication.
Economic significance. Edible.
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Anonymous users2024-02-11<>1. Kelp: Kelp is a perennial large edible algae, and the spores of plants are relatively large and flattened. It is divided into three parts: blade, shank and retainer, and the retainer is pseudoroot-shaped.
The leaves are composed of the epidermis, cortex and pith group, and there are sporangia in the lower part of the leaves. Kelp is a nutritious and important marine resource.
2. Wakame: Wakame belongs to the phylum Brown Algae, Brown Algae, Kelp Order, Pterophytae, and Wakame is an annual plant of seaweed. Because the leaf edge of wakame is pinnate lobes, the leaves are thinner than kelp, and the shape is like a banana leaf fan, which also resembles a wakame, so it is named wakame.
Wakame is a temperate seaweed that can tolerate higher water temperatures.
3. Staghorn: Staghorn is an algae plant, and Staghorn is a perennial herb and a common seaweed. Staghorn is often grown in high mountain snow, it is not afraid of severe cold, does not rot and spoils, and has high nutritional value. Which hand.
4. Foxtail algae: Foxtail algae is a Songbi plant of the family Foxtail of the family Fox Tail Grass, a perennial thick and submerged herb. Foxtail algae is suitable for indoor water greening and is a good material for decorating glass containers. If cultivated in an aquarium, it can be used as a medium ground or background grass.
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Anonymous users2024-02-10Algae are a relatively primitive, ancient class of lower organisms. Algae have a simple structure, without the differentiation of roots, stems, and leaves, and are mostly single-celled, colony, or multicellular phyllodes. For example, chlorella is unicellular, the algae belong to the group, and the kelp is phyllodes.
Algae contain photosynthetic pigments such as chlorophyll, can carry out photosynthesis, and are autotrophic organisms.
Key features:
1. Algae is a relatively primitive and ancient class of lower organisms. Algae have a simple structure, without the differentiation of roots, stems, and leaves, and are mostly single-celled, colony, or multicellular phyllodes. For example, chlorella is unicellular, the algae belong to the group, and the kelp is phyllodes.
2. Algae contain chlorophyll and other photosynthetic pigments, which can carry out photosynthesis and are autotrophic organisms.
3. Algae, including a variety of organisms of different groups that can produce energy through photosynthesis. Although other algae appear to derive their photosynthesis ability from blue-green algae, they have separate branches in evolution. There are about 30,000 species of algae that are known to mankind.
4. The difference between algae and bacteria and protozoa is that the way algae produce energy is photosynthetic autonomism. The study of algae is called phycology, and in the old classification system, algae were classified as plants, but with the development of taxonomy, algae have a new category. Therefore, "algae plants" are colloquially called, and are mistaken for plants due to their individual forms and ways of living.
5. Algae do not belong to the plant kingdom, but to the protist kingdom. Algae are artificially divided complex groups that contain both eukaryotes and prokaryotes (such as cyanobacteria). Phycology roughly divides algae into 10 phyla, and there will be slight differences between different classification systems.
The common characteristics of algae plants and ferns are:
a No rhizome and leaf differentiation.
b Lives in water.
c Seed generation.
d Produces spores.
Answer: d. Solution:
There are many types of algae plants, most of them live in water, a few live in shady and damp places, there are single-celled, such as Chlamydomonas, multi-cellular, such as kelp, seaweed, etc., the structure is simple, there is no differentiation of roots, stems and leaves, it cannot produce seeds, and it reproduces offspring with spores, which belongs to spore plants. Ferns are multicellular, with the differentiation of roots, stems, and leaves, there are conduction tissues in the body, and they are generally taller, and ferns do not produce seeds, and reproduce offspring with spores, which also belong to spore plants, and the reproduction of ferns is inseparable from water, so they are suitable for living in shady and damp places. It can be seen that d is in line with the topic.
Kelp is neither a red algae nor a green algae. Kelp belongs to brown algae.
Similarities: Algae and bryophytes do not have real roots, algae are root packs, and mosses are false roots, both of which have a fixed effect. Algae, mosses, and ferns all live in moist, shady places, however, algae mostly live in water, and only a small amount lives on moist soil and rock surfaces. >>>More
Manjianghong is a fern-algae symbiont, and there is no definite conclusion as to whether it belongs to algae or ferns, but it is more likely that Manjianghong belongs to ferns. A systematic study of its classification is ongoing.
Fat cabbage is an algae plant, and it is rich in nutrients. It has a protein content of up to 20%, which is higher than that of eggs; At the same time, it is also rich in calcium, phosphorus and other minerals that are beneficial to the body, and is a high-protein and low-fat nutrition.
The photolysis process of water in the photosynthesis photoreaction phase can release oxygen because algae plants have chloroplasts in their bodies and are capable of photosynthesis.