IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Organsims-Energy transfer and cycles
Topic :Organisms– Weightage : 21 %
All Questions for Topic : Habitat,Ecosystem,Inter dependency,Unity and diversity in life forms,Energy transfer and cycles,Classification
Question
c.In preparation for an ecology field trip, a class had been learning about what nutrients a plant needs for growth and photosynthesis. The students learned that one of the nutrients that plants need is nitrogen. Nitrogen for plants can come from many sources including fertilizers, lightning, and bacteria.
Before the trip the students conducted a laboratory experiment using fertilizer containing nitrogen to grow pea plants. The students’ hypothesis was:
If fertilizer containing nitrogen is added to the soil, then the pea plants will grow taller because there is more nitrogen which is an essential nutrient.
The students collected the following data after the plants had been growing for two weeks:
▶️Answer/Explanation
Ans:
Presence of fertilizer
Question
d.The students also used the following image to compare the leaves of the plants.
Using the information in the tables, state the independent variable.
Amount of nitrogen in the fertilizer.
State one dependent variable recorded by the students.
Height of Plants in millimetres
▶️Answer/Explanation
Ans:
Height or colour of leaves or leaf appearance