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Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...
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Fruit Development, Structure, and Function

Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
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Related Experiment Video

Updated: Jul 28, 2026

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
06:48

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Published on: July 29, 2020

Fruit and vegetable intake in young children

B A Dennison1, H L Rockwell, S L Baker

  • 1Mary Imogene Bassett Research Institute, Cooperstown, NY 13326-1394, USA.

Journal of the American College of Nutrition
|August 26, 1998
PubMed
Summary

Young children consume insufficient fruits and vegetables, with juice making up most fruit intake. Low fruit and vegetable consumption is linked to poor nutrient intake and higher fat intake.

Area of Science:

  • Pediatric Nutrition
  • Dietary Habits
  • Public Health

Background:

  • Current dietary guidelines recommend increased fruit and vegetable consumption for Americans aged 2 years and older.
  • Assessing children's adherence to these recommendations is crucial for public health initiatives.

Purpose of the Study:

  • To evaluate the daily fruit and vegetable intake among healthy preschool-aged children.
  • To determine the extent to which young children's diets meet recommended servings of fruits and vegetables.

Main Methods:

  • A cross-sectional study was conducted at a primary care center.
  • Dietary records from 168 children (2- and 5-year-olds) were analyzed over 7 days.
  • Fruit and vegetable servings were calculated using USDA definitions.

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Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
06:48

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil

Published on: July 29, 2020

Impact of Common Fruit Juices and Toothbrushing on the Discoloration of Primary Teeth
04:40

Impact of Common Fruit Juices and Toothbrushing on the Discoloration of Primary Teeth

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Main Results:

  • Children consumed approximately 0.8 fruit servings and 2.1 total fruit and vegetable servings daily.
  • Fruit juice comprised a significant portion (54%) of all fruit servings.
  • Lower fruit and vegetable intake correlated with lower vitamin A, C, and fiber intake, and higher fat intake.

Conclusions:

  • Preschoolers consumed about 80% of recommended fruit servings but only 25% of recommended vegetable servings.
  • Inadequate fruit and vegetable intake was associated with deficiencies in key nutrients and higher fat consumption.
  • Findings highlight the need for interventions to improve fruit and vegetable intake in young children.