FIGURE 6-2 The petioles of each leaf of poplar (Populus alba) are long enough that the leaves do not shade each other, and all are fully exposed to light. The lower (abaxial) side of each leaf blade is covered with white, dead trichomes, the upper (adaxial) surface is hairless and green.
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.
Many leaves have a big, obvious vein that runs along their center, and many veins emerge from it. What is the large vein called (and can a leaf have more than one [look at as shown])? The smaller veins that emerge from it? What are the very smallest veins of a leaf called? Which veins supply water directly to mesophyll cells—the biggest veins or the smallest?
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