Question

Cравнить мхи и голосеменные растения.......Как?

Answer 1

Голосеменные 
Высшие растения, размножающиеся семенами, но не имеющие цветка. 
отличия:
I. По жизненным формам 
1 ) Деревья 
2) Кустарники 
II. По месту обитания 
III. По расположению листьев 
IV. По времени созревания семян 


Мхи 
Высшие споровые растения, которые имеют побег. 
отличия
I. По месту обитания 
1) Темный сырой лес 
2) Болото 
II. По количеству мертвых клеток 
III. По расположению половых органов гаметофитов) 
1) Раздельнополые однодомные 
2) Раздельнополые двудомные 
IV. По наличию ризоидов

Answer 2

Comparing Mosses and Angiosperms

Mosses and angiosperms (flowering plants) are two different types of plants with distinct characteristics. Let's compare them in terms of their features, life cycles, and ecological roles.

1. Features: - Mosses are non-vascular plants, meaning they lack specialized tissues for transporting water and nutrients. They have simple structures and lack true roots, stems, and leaves. Mosses typically have a small, leafy structure called a gametophyte, which is the dominant stage of their life cycle. - Angiosperms, on the other hand, are vascular plants with well-developed tissues for water and nutrient transport. They have complex structures, including roots, stems, and leaves. Angiosperms have two main stages in their life cycle: the sporophyte, which is the dominant stage, and the gametophyte, which is usually reduced and dependent on the sporophyte.

2. Life Cycles: - Mosses have a life cycle characterized by alternation of generations. The dominant stage is the gametophyte, which produces gametes (sperm and eggs) through mitosis. The sperm requires water for fertilization, and once fertilized, the egg develops into a sporophyte. The sporophyte remains attached to the gametophyte and produces spores through meiosis, which are dispersed to grow into new gametophytes. - Angiosperms also have a life cycle with alternation of generations. The dominant stage is the sporophyte, which produces flowers containing male and female reproductive structures. Fertilization occurs when pollen from the male structure (anther) reaches the female structure (stigma) and forms seeds. The seeds develop into new sporophytes, which can grow into mature plants and produce flowers.

3. Ecological Roles: - Mosses play important ecological roles. They are often found in moist environments and help retain water in the soil, prevent erosion, and provide habitats for small organisms. Mosses also contribute to nutrient cycling and carbon storage. - Angiosperms are the most diverse group of plants and play crucial roles in ecosystems. They are the primary producers, converting sunlight into energy through photosynthesis. Angiosperms provide food, shelter, and habitat for numerous organisms, and they are involved in pollination and seed dispersal.

In summary, mosses and angiosperms differ in their features, life cycles, and ecological roles. Mosses are non-vascular plants with a simple structure and a dominant gametophyte stage, while angiosperms are vascular plants with complex structures and a dominant sporophyte stage. Both types of plants have unique ecological contributions to their respective environments.