What percentage of oxygen is contained in exhaled air?
A. 21% B. 16% C. 4% D. 0.04% E. Less than 0.01% Correct Answer: Option B – 16%
The instrument used to measure the rate of transpiration in plants is called a/an?
A. Anemometer B. Barometer C. Hydrometer D. Photomer E. Potometer Correct Answer: Option E – Potometer
What is NOT an abiotic factor?
A. Humidity B. predators C. temperature D. turbidity E. wind Correct Answer: Option B – predators
Evidence of organic evolution can be deduced from all the following EXCEPT?
A. Autecology B. Comparative anatomy C. Embryology D. Fossil records E. Geographical distribution Correct Answer: Option A – Autecology
Which one is NOT an essential part of a flower?
A. Anther B. Filament C. Ovary D. Petal E. Stigma Correct Answer: Option D – PetalProducts
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