(a) ldentify specimens D, E, F, and G.
(b) What type of mouthparts is possessed by each of specimens D, E, F and G
(c) State one method of controlling specimen F.
Explanation
(a) Identification of Specimen;
- D is Grasshopper;
- E is Aphid;
- F is Cotton Stainer;
- G is Weevils.
(b) Type of Mouth parts possessed by specimen;
- D - Bitting and chewing
- E - Piercing and Sucking
- F - Piercing and Sucking
- G - Boring
(c) Damages done by specimens D, E, F and G to crops
Specimen D;
- Eats up the leaves and stems.
- reduces the rate of photosynthesis.
- reduces growth.
- reduces yield.
Specimen E:
- toxic saliva
- transmits diseases.
- reduces quality of boll.
- leaf distortion.
Specimen G:
- bores holes into grains and eat them up
- Reduces the quality of stored produce
- Reduces grains to powder.
(d) Methods of controlling specimen F are:
- Hand picking.
- Spray with insecticides.