9700/13 Biology Oct Nov 2013 Online Test | Cambridge AS and A Level MCQ
CIE
AS & A Level
Biology (9700)
بهمن
2013
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 39
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Neda Bani The diagram shows the flow of energy through an ecosystem. Photosynthesis is the gross
productivity. Producers lose some energy in respiration and the energy left is the net
productivity.
This can also be expressed as an equation:
net productivity = gross productivity – respiration
Some of the net productivity passes to herbivores.
Which calculation gives the proportion of net productivity passing to herbivores?
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