Question

Чем различается онтогенез растений и животных?​

Answer 1

Ответ:

Растения- онтогенез одноклеточных

животные- онтогенез многоклеточных

Answer 2

Differences between Ontogenesis in Plants and Animals

Ontogenesis refers to the process of development and growth of an individual organism from its earliest stages to maturity. While there are similarities in the ontogenetic processes of plants and animals, there are also significant differences. Let's explore some of these differences:

1. Reproduction: Plants and animals have different modes of reproduction. Animals typically reproduce sexually, with the fusion of male and female gametes. In contrast, plants can reproduce both sexually and asexually. Asexual reproduction in plants involves the production of offspring without the involvement of gametes.

2. Embryonic Development: During embryonic development, plants and animals undergo different processes. In animals, the zygote undergoes cleavage, forming a blastula, which then develops into a gastrula through gastrulation. This process leads to the formation of germ layers and the development of various organ systems. In plants, the zygote develops into an embryo, which is protected within a seed. The embryo develops into a seedling, and the plant grows from there.

3. Growth Patterns: Plants and animals exhibit different growth patterns. Animals typically grow by increasing the size of their existing cells, a process known as hypertrophy. In contrast, plants can grow by both cell division and cell expansion. Plant growth occurs through the activity of meristems, specialized regions of actively dividing cells.

4. Tissue Differentiation: The process of tissue differentiation, where cells become specialized for specific functions, differs between plants and animals. In animals, tissue differentiation occurs during embryonic development and continues throughout the organism's life. In plants, tissue differentiation occurs primarily during embryogenesis and early seedling growth. Once the plant reaches maturity, further growth occurs through the expansion of existing cells rather than the formation of new tissues.

5. Regeneration: Regeneration, the ability to regrow lost or damaged body parts, differs between plants and animals. While some animals, such as certain amphibians and reptiles, can regenerate lost body parts to some extent, most animals have limited regenerative abilities. In contrast, many plants have a remarkable capacity for regeneration. They can regrow entire organs, such as roots, stems, and leaves, from specialized tissues called meristems.

6. Lifespan: Plants and animals also differ in their lifespan. Animals generally have a shorter lifespan compared to most plants. While some animals can live for several decades or even centuries, many have much shorter lifespans. In contrast, some plants can live for hundreds or even thousands of years, such as certain trees and shrubs.

These are some of the key differences between the ontogenesis of plants and animals. It's important to note that there is a wide diversity of plant and animal species, and variations may exist within these general patterns.