Which of the following instruments is used to estimate…
Which of the following instruments is used to estimate the number of plants in a habitat?
B. Pitfall trap
D. Sweep net
The number of plants in a specific area of land can be approximately determined by using a square or rectangular instrument to collect samples and using the sample to calculate and project the approximate number in a larger area. This instrument used to collect samples is called a quadrat.
Now to the right option…
- Option A is incorrect; a Pooter is a small tube used to collect insects. It has two openings, one is usually inserted into the mouth and suction applied to draw in insects through the other opening. So it has nothing to do with plant population determination.
- Option B is also incorrect; a pitfall trap is a smooth walled bucket placed into a hole to capture and trap unsuspecting small animals that may unknowingly walk into it. It has nothing to do with plant populations.
- Yes, a quadrat is such instrument used to collect plant population samples required to approximate the population of the plant in the larger area. C is very correct
- Actually, D is incorrect; a sweep net is a net attached to a bat-like handle in a funnel shape, often used to collect insects or other organisms above grass surfaces. It has nothing to do with determination of plant number.
You may please note that:
- The population of plants in a large area may be cumbersome to directly count, samples are therefor taken with a quadrat, and the samples used to calculate the approximate number in the larger area.
- Note that the correct spelling for this instrument is QUADRAT and not QUADRANT.
You may use the questions and answers session to deal further on this topic…
/culled from 2018 JAMB-UTME biology question 24 /
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