Diagrams D, E and F are illustrations of tools used for ecological studies. Study them and answer questions (a) to (c).
(a)(i) Identify diagrams D, E and F.
(b) State one use each of the tools labeled D, E and F.
(c) Describe briefly the use of each of the tools labeled D, E and F.
(a) (i) Identification of diagrams D, E and F
D – Sweep net/butterfly net/ insect net/ hand net;
E – Pooter;
F – Quadrat.
(ii) Names of labeled parts
I- Handle (of Sweep net/butterfly net); V- Specimen container/tube;
II- Net; VI- Collecting/ tube;
III- Suction tube; VII- Frame;
IV- Wire mesh/gauze/cotton; VIII- Thin wire/string
.
(iii) Function of parts labeled I, III, IV, V and VII
I - Handle of Sweep net/butterfly net: for holding the instrument in place for use;
III - Suction tube: to apply suction pressure to draw in the insect;
IV - Wire mesh/gauze/cotton/sieve: prevents the insect /dirt from entering the/suction tube/
mouth;
V - Specimen container/tube; for keeping the sucked insect (temporarily);
VII - Frame; to demarcate the area of study/ sample area.
(b) Use of tools labeled D, E and F
D - Sweep net/butterfly net: to catch flying insects
E - Pooter: to collect tiny invertebrates from leaves /litter/crevices
F - Quadrat: to determine the population of small, slow-crawling organisms/ small plants within the restricted area
(c) Description of use of
(i) D/Sweep net/butterfly net
(ii) E/Pooter
(iii) F/Quadrat
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