CIE iGCSE Co-Ordinated Science B1.1 Characteristics of living organisms Exam Style Questions Paper 2
▶️ Answer/Explanation
The bladderwort detects a nearby swimming animal and traps it, showing sensitivity — the ability to detect and respond to a stimulus.
It then digests the trapped animal, absorbing nutrients from it, which shows nutrition — taking in materials for energy and growth.
No excretion or growth process is described in the diagram.
✅ Answer: (D)
It then digests the trapped animal, absorbing nutrients from it, which shows nutrition — taking in materials for energy and growth.
No excretion or growth process is described in the diagram.
✅ Answer: (D)
▶️ Answer/Explanation
Sensitivity is the characteristic of living organisms that describes the ability to detect changes in the environment (stimuli) and produce an appropriate response.
Excretion is the removal of metabolic waste, growth is an increase in size, and movement is change in position — none of these involve detecting and responding to environmental stimuli.
✅ Answer: (D)
Excretion is the removal of metabolic waste, growth is an increase in size, and movement is change in position — none of these involve detecting and responding to environmental stimuli.
✅ Answer: (D)
▶️ Answer/Explanation
Row 1 correctly defines excretion, row 3 correctly defines nutrition, and row 4 correctly defines respiration. Row 2 is incorrect because the description given defines reproduction, not growth (which is a permanent increase in size and dry mass). Therefore, the correct combination is 1, 3, and 4.
✅ Answer: (B)
✅ Answer: (B)
▶️ Answer/Explanation
Excretion is specifically defined as the removal of metabolic waste products and substances in excess. Growth is increase in size, metabolism is all chemical reactions, and mitosis is cell division. Hence, the correct term is excretion.
✅ Answer: (A)
✅ Answer: (A)
▶️ Answer/Explanation
Oxygen is a waste product of photosynthesis in the plant’s metabolism.
Its removal from the body through the stomata fits the definition of excretion.
This is not respiration (chemical breakdown of nutrients for energy) or movement.
✅ Answer: (A)
Its removal from the body through the stomata fits the definition of excretion.
This is not respiration (chemical breakdown of nutrients for energy) or movement.
✅ Answer: (A)