Biology extended essay A (29/34)

May 2018 session에 작성한 Bio EE 이고 총 29 점 (A) 를 받은 에세이 입니다. 주제는 The effects of intraspecific competition for below-ground resources on the growth and development of Pisum sativum 입니다. (plant physiology).

[본문내용]

Abstract:

Pisum sativum which is rich in cholesterol lowering fiber can be an important food source in Mongolia where cardiovascular diseases due to traditional meat based diet is common. However, due to limited amount of fertile soil, it is important to know how many Pisum sativum can be planted without significant effects of density dependent factors, including the effects of competition. This lead to my research question ‘How does the differing intraspecific competition for water and nutrients affect the growth and development of Pisum sativum measured by average size, growth rate, and root to shoot ratio?’

Four different population density groups, each with one plant (control), two plants, four plants and six plants were potted. The seeds of Pisum sativum were germinated on the cotton. 500ml of water was given every three days and the heights of the plants were recorded every three days. At the end of the experiment, the plants were then dried for 10 hours and their shoot and root dry mass was measured…

• 총 페이지수: 39 pages
• 과목명: Extended Essay
• 주제: The effects of intraspecific competition for below-ground resources on the growth and development of Pisum sativum
• The file is in Word format.