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Sample expository essays about rice plants
Sample 1:
When thinking of Vietnam, people often associate it with famous landscapes like Ha Long Bay, Hoan Kiem Lake with the legend of returning the magic sword, or distinctive items like silk, poem hats. However, what fascinates foreign visitors to Vietnam the most is the culinary delights: pho, bun cha, or banh chung, banh giay during Tet. It's easy to see that these dishes are made from rice. Those white grains are the product of the rice plant— a type of plant indispensably linked with Vietnamese life.
The rice plant is a herbaceous plant with a graceful yet tall stalk that can reach from 1 to 1.5 meters in height, depending on the variety and cultivation conditions. The stalk is hollow, slender, flexible, sheathed in long, narrow, lush green leaves arranged alternately, resembling silk ribbons reaching toward the light. This structure allows the plant to maximize solar energy usage for photosynthesis, thereby generating nutrients for growth. The underside of the leaves contains small air chambers, facilitating easy gas exchange, a crucial feature in waterlogged environments.
The root system of the rice plant is also uniquely structured, differing from many other plant species. The rice plant roots are fibrous, developing robustly and extensively from the base, providing stability in the soil and sustaining life in flooded environments. The roots not only absorb water but also take up nutrients from the soil, ensuring the plant has sufficient energy to grow vigorously through various stages. The roots can endure prolonged flooding, making the rice plant one of the most adaptable species to swampy, waterlogged soil.
Notably, the rice plant's flowers are its reproductive parts, forming clusters at the top. These tiny, white flowers remain hidden within surrounding leaves, waiting for the wind for pollination. After pollination, the flowers gradually turn into rice grains, with each cluster containing 50 to 100 grains. Though small, the rice grain contains vital nutrients, as the finale product awaited by farmers after a hard-working season.
Although the rice plant can thrive in flooded environments, water and nutrient conditions must be meticulously controlled for optimal growth and high yield. Therefore, farmers must carefully monitor the water level throughout each rice season, avoiding excessive submergence or drought, as both factors affect the plant's development.
The rice plant not only serves as a crop but also carries profound cultural value. It is intertwined with the lives and spirits of the people, being the livelihood of millions of families, and the ingredient in familiar daily meals. With its outstanding structural and functional characteristics, the rice plant affirms its vital role in agriculture and spiritual life.
In each rice season, the rice plant brings farmers bountiful harvests, a source of pride and hope for the future. Therefore, rice is not merely a crop but an indispensable part of the culture and economy in many countries worldwide, especially in Asian countries, where rice civilization has existed and developed for thousands of years.
Sample 2:
Every country, every nation, and every land has its characteristic plants. In our country, the simple, rustic rice plant has become the closest agricultural plant throughout our nation's history. This rice plant has inspired countless writers and poets when writing about the beauty of the homeland.
"Vietnam, my homeland
Vast rice fields more beautiful than anywhere in the sky
The flying stork wings gently hover
Clouds obscure the Truong Son summit from dawn to dusk."
The rice plant is a herbaceous plant with a straight, slender yet resilient stalk. The stalk grows between 1 and 1.5 meters high and has a notable feature of being hollow, reducing weight and allowing it to rise above the water to seek light. The stalk's thick outer layer protects the soft tissues inside from external impacts, enabling it to bend easily with the wind without breaking, helping it to withstand strong wind or storm environments.
The leaves of the rice plant are long, narrow, green, and grow in alternating layers, optimizing sunlight absorption. Each leaf is 50 to 70 cm long with a flat surface to increase light exposure. Rice leaves play a crucial role in photosynthesis, helping convert solar energy into nutrients for growth. Notably, the underside of rice leaves has stomata—tiny holes that allow gas exchange and respiration, supporting survival in waterlogged conditions.
The root system of the rice plant is a decisive factor in its survival and development. The rice plant has fibrous roots, developing widely and strongly from its base, anchoring it firmly to the soil and maintaining stability in flooded conditions. Especially, rice can breathe through air spaces in the roots, allowing it to take oxygen from the air to survive in waterlogged conditions. This is a distinctive feature of the rice plant, as most other plants would perish under prolonged submersion.
The reproductive part of the rice plant is the rice panicles, which grow at the top of the plant and contain small white flowers. After pollination, these flowers gradually transform into rice grains, each panicle containing 50 to 100 grains. These grains, after harvesting, are processed into rice—the staple food in Vietnam's meals and many other countries. Rice grains contain a high starch content, providing energy for the body.
The rice plant requires a significant amount of water for growth. It is typically cultivated in flooded fields to ensure adequate moisture throughout the growing season. This flooded environment not only promotes healthy growth but also reduces the presence of weeds, creating a favorable environment for rice development. However, too little or too much water can affect the plant's growth and yield.
Thanks to its unique structure and functions, the rice plant can grow and develop well in waterlogged conditions, meeting the increasing food demands of humans. The rice plant is not only an important food source but also holds great economic value. Each rice season is the result of hard labor and the hope of farmers. With all its values and features, the rice plant has firmly established its importance in agriculture and people's lives.
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