lỗ khí
Definition
- Noun (Botany):
- Stoma (plural: stomata): A tiny pore found on the surface of leaves and some stems, allowing for the exchange of gases (such as carbon dioxide and oxygen) and the release of water vapor (transpiration) between the plant and the atmosphere.
Usage Examples
- Noun:
- Lỗ khí thường tập trung ở mặt dưới của lá. (Stomata are usually concentrated on the underside of leaves.)
- Thực vật đóng mở lỗ khí để điều tiết sự thoát hơi nước. (Plants open and close their stomata to regulate water vapor loss.)
- Số lượng lỗ khí ảnh hưởng đến tốc độ quang hợp. (The number of stomata affects the rate of photosynthesis.)
Advanced Usage
- In scientific contexts, "lỗ khí" is a specific botanical term. Its function is critical for plant physiology, linking to processes like photosynthesis, respiration, and transpiration.
Variants and Related Words
- Khí khổng: This is a direct synonym for "lỗ khí", also meaning stoma. It is commonly used in formal and scientific Vietnamese.
- Khí khổng đóng lại khi cây thiếu nước. (The stomata close when the plant is dehydrated.)
Synonyms
- Stoma (English): The direct scientific equivalent.
- Pore (English, general): A very small opening, though not botanically specific.
Related Terms (Not Idioms)
- Thoát hơi nước: Transpiration - the process of water vapor release through the stomata.
- Quang hợp: Photosynthesis - the process that uses carbon dioxide taken in through the stomata.
- Trao đổi khí: Gas exchange - the primary function of the stomata.