CATDOLL : CATDOLL: What does the fish testis consist of?

1. What does the fish testis consist of?

The fish testis is also called milt, which is mainly composed of protein and is the organ for fish to produce and store sperm. Milt contains a special protein called protamine, which is the simplest alkaline protein in nature. It is a good medicine for stopping bleeding.

2. What is fish developmental biology?

Developmental biology is one of the important basic branches of biological sciences. Its research content is interpenetrating and interconnected with many other disciplines, especially genetics, cell biology, and molecular biology. It uses modern scientific technology and methods to study and analyze the processes and mechanisms of organisms at the molecular level, submicroscopic level, and cellular level.

A discipline that studies the mechanism of individual development using the methods of molecular biology and cell biology. It was developed from experimental embryology. Experimental embryology studies the relationship and properties of the various parts of the developing embryo, and how they affect each other. Developmental biology investigates the essence of this relationship, what substances (or substances) are at work, how the substances that work make embryonic cells differentiate in a certain direction, how the differentiating cells form tissues or organs to ensure the development of tissues and organs, how the normally developing embryo grows, matures, and becomes a growing individual, why the latter gradually ages after developing to a certain stage, and how to complete the entire development of the individual in a specified time and space sequence.

3. What do flowers develop from?

Flowers develop from buds. Buds are divided into flower buds and branch buds. Flowers attract people with their bright colors, graceful shapes and fragrant smells. Flowers are actually shortened and modified branches. The structure of petals is also like that of leaves, divided into epidermis, basic parenchyma and vascular bundle. The epidermis of petals mostly has protrusions, trichomes and stomata, and the cuticle often shows wrinkled stripes.

4. What does the flesh develop from?

Ovary wall

The flesh develops from the ovary wall. This flesh is also called the true fruit. It consists of seeds and pericarp. The pericarp refers to the outer shell or skin of the fruit, while the pericarp we usually refer to is the exocarp. The pericarp is the part of the fruit that is differentiated and developed from the tissue of the ovary wall.

The pericarp of a mature fruit can generally be divided into three layers: the exocarp, the mesocarp, and the endocarp. The pericarp has many wonderful uses in life. The pericarp is the part of the fruit that is differentiated and developed from the tissue of the ovary wall. The pericarp of a mature fruit can generally be divided into three layers: the exocarp, the mesocarp, and the endocarp. However, due to different fruit types, the three layers of the pericarp vary greatly.

5. What does the peel develop from?

The pericarp is the part of the fruit that is differentiated and developed from the tissue of the ovary wall. It is divided into the exocarp, mesocarp, and endocarp.

The exocarp is not thick and consists of 1 to 2 layers of cells. Its structural characteristics are similar to those of the epidermis, with a cuticle and stomata. When the fruit is immature, the thin-walled cells of the exocarp contain many chloroplasts, which turn into chromoplasts when mature, resulting in different colors of the fruit.

The mesocarp is mostly composed of thin-walled tissue, but it varies greatly. Some are rich in juice or fleshy, such as the edible part of peaches and apricots. Some mesocarps have more vascular bundles distributed in a network, such as citrus, the pith of which becomes the fruit when it is ripe.

The endocarp is the innermost layer. Some are hardened and composed of multiple layers of stone cells, such as the hard pit in a peach. Some endocarps have many cystic and juicy glandular hairs on their walls, becoming the edible part, such as the endocarp of citrus.

6. What does the ovule develop from?

The ovule develops from the ovoid body in the ovary. It is the precursor of the seed and is the structure that develops into the seed after fertilization. The ovule of angiosperms is enclosed in the ovary and attached to the placenta on the inner wall of the ovary with a funiculus. The ovule of gymnosperms is naked on the megaspore leaf.

After the flower completes fertilization, the ovary develops into the fruit, the ovary wall develops into the fruit skin, the ovule develops into the seed, and the fertilized egg develops into the embryo.

7. What does the flesh develop from?

The pulp is the edible part of the plant, so what does the pulp come from? Let's find out below.

1What does the flesh develop from?

The flesh develops from the ovary wall, and this flesh is also called the true fruit. It consists of seeds and pericarp. The formation of the pericarp is actually the result of the continuous development of the ovary wall. The pericarp is divided into exocarp, mesocarp and endocarp. However, the texture of each layer is different, so there are many types of fruits.

What are the functions of 2

edible

Most of the food for humans is fruits of cereal plants, such as wheat, rice and corn. People often eat fruits, including apples, peaches, oranges and grapes, which are rich in glucose, fructose and sucrose, as well as various inorganic salts, vitamins and other nutrients. These fruits can not only be eaten fresh and delicious, but can also be processed into various foods such as dried fruits, jams, preserves, wine, juice and vinegar.

Medicinal

Among the Chinese medicinal materials commonly used in our country are dates, fennel, papaya, citrus, hawthorn, apricot, longan, etc.

Watch

Some ornamental plants produce lovely fleshy fruits that add a different color and vibrancy to the plant.

8. What do cotyledons develop from?

Cotyledons are part of the embryo and develop from the fertilized egg. When the fertilized egg develops into the embryo sac, the secondary cleavage first occurs. The cells close to the micropyle are called basal cells, which develop into the suspensor to absorb nutrients and secrete some hormones for the development of the apical cells. The cells far from the micropyle are called apical cells, which develop into the complete embryo. The embryo includes cotyledons, plumules, hypocotyls, and radicles.

9. How do plant branches develop?

The surface of the embryo seed is the seed coat, inside which is the main part of the seed - the embryo. The seed coat plays a protective role, and the embryo is a young life form. The structure of the embryo consists of four parts: the radicle, the embryo, the hypocotyl, and the cotyledon. The embryo develops into the stem and leaves, the radicle develops into the root, the hypocotyl develops into the part connecting the stem and the root, and the cotyledon provides nutrition for the development of the embryo.

10.What root does the sweet potato develop from?

Sweet potatoes come from taproots, lateral roots, adventitious roots, tuberous roots, and aerial roots.