Plant Structure and Growth
Roots anchor, the plant, ingest minerals and water, direct water and supplements, and store food. These are two kinds of root frameworks.
Plant Life Cycle
Plants are part of the PLANT KINGDOM, which is one of the five kingdoms of life. Plants are divided into smaller classes based on common characteristics. Certain characteristics are shared by all plants. They are made up of a large number of cells. They also make their own food through a chemical process called photosynthesis, which involves the use of water, carbon dioxide, and solar energy. They pump life-giving oxygen into the air as a by-product.
Life Cycle of Plants
All the organisms that belong to the Kingdom Plantae are known as plants. They are multicellular and eukaryotic and can synthesize their food by photosynthesis, known as autotrophic organisms. They are classified based on certain characteristics, such as the plants bear flowers; some have only naked seeds and do not contain flowers. Some plants neither have seeds nor flowers, such as ferns and mosses.
Plant Morphology and Anatomy
The study of life and organisms is biology. The cell is recognized as the basic unit of life by biology. From ancient Greek, biology is recognized. Modern biology deals with the recent developments in Science.
Describe the composition of the soil, the rhizosphere, and humus.
The top layer of the planet is called the lithosphere. Soil is the loose stuff on the surface of the lithosphere and the minerals found in this layer supply a variety of nutrients to life-forms. Lithosphere is the main life supporting system that decides the diversity of life in an area. It is the one of the main natural resource essential for survival and development. Soil is formed due to interaction between weathering of rocks, rain, wind, temperature (physical components) and plants, animals and microbes (biological components). It is formed by combined action of climatic factors such as temperature, rainfall, light etc. and biotic factors such as plants and microbes on earth crust.
The structure of soil is also called soil profile. It represents the vertical section of earth crust made up of a succession of horizontal layers which varies in thickness, colour, texture, acidity, porosity etc. Soils can be divided into two groups: organic soils are those that are formed from sedimentation and primarily composed of organic matter, while those that are formed from the weathering of rocks and are primarily composed of inorganic material are called mineral soils.
It consists of four types of rock particles which differ in their size, nature and texture. These four types as follows
- Gravels - The size of the gravel particles is greater than 2mm in diameter and hence, these particles can be picked up by hand.
- Sand particles - The size of the sand particles ranges from 0.05mm to 2.00mm and hence, these particles can be seen easily with naked eyes. These particles are coarse to touch.
- Silt particles - The size of the silt particles ranges between 0.005 to 0.05mm.
- Clay particles - The size of the clay particles ranges less than 0.005 mm and hence are the smallest soil particles.
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