3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Which waste product of photosynthesis is excreted by a leaf in the light?
(1)Total for this question: 1 mark
3(i) EXCRETION · EXAM QUESTIONS
3.20 Carbon dioxide and oxygen lost from a leaf
8 exam-style questions. Write your answer, check it against the mark scheme and tick the points you earned. Your marks stay on this device. Your writing is not saved.
Ratings are saved in this browser on this device, under a KS4 key kept separate from International A Level recall. Written answers are temporary and cleared when you leave the page. Use Reset to clear the ratings on this device.
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Explain why oxygen is described as an excretory product of plants.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Explain why a leaf excretes carbon dioxide at night.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Describe the route by which oxygen leaves a palisade cell and the leaf.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Explain why a leaf in bright light excretes oxygen but not carbon dioxide.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Through which structures do waste gases leave a leaf?
(1)Total for this question: 1 mark
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Compare excretion of carbon dioxide by a plant and by a mammal.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks
3.20 Carbon dioxide and oxygen lost from a leaf
Exam question
Mark points shown after marking
Suggest why plants do not need an excretory organ like a kidney.
(2)Write your answer, then press Show model answer and tick each mark point your answer makes. Your answer is not saved.
Total for this question: 2 marks