IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Interaction with environment-Life Cycles
Topic :Interaction with environment– Weightage : 21 %
All Questions for Topic : Tropism,Senses,Nervous System,Receptors and hormones
Question:
a) What is the only thing that has entered the mesocosm since it was set up?
▶️Answer/Explanation
Ans: Light/(energy)/(heat).
b) What is the only thing that was lost from the mesocosm?
▶️Answer/Explanation
Ans: Heat/(energy)/(light).
Question:
Explain whether bacteria that rely on aerobic respiration for their energy could survive in the mesocosm.
▶️Answer/Explanation
Ans: Aerobic bacteria can survive using oxygen from photosynthesizing microbes.
Question:
Explain whether life could be sustained in the mesocosm for millions of years, or whether it will inevitably die out after a time.
▶️Answer/Explanation
Ans: Could be sustained as long as light continues to be received; minerals/elements can be recycled endlessly.