Range Forest Officer recruitment (state exams) · India · State Public Service Commissions and state forest departments (e.g. MPPSC, UKPSC, UPPSC)
Original practice questions written to the published syllabus · not past papersInsects that damage trees, seeds, nurseries and timber, how outbreaks develop, and integrated ways to manage them.
In the exams: IFoS Forestry Paper II Section B (forest protection); ICAR AIEEA-PG Group 09 (tree pests, IPM); ICAR AICE-JRF 59 Unit 8; Korea Forestry Engineer written subject Forest Protection
How our questions for Range Forest Officer recruitment spread across the units of Forest Entomology & Integrated Pest Management. Difficulty: 18 easy, 15 medium, 0 hard.
| Insect morphology and classification relevant to forestry | 4 | |
| Defoliators: teak defoliator and other major defoliators | 3 | |
| Bark beetles and wood borers | 3 | |
| Sap-suckers, gall-formers and shoot borers | 3 | |
| Seed and cone insects | 3 | |
| Nursery pests and termites | 3 | |
| Population dynamics and outbreaks | 3 | |
| Integrated pest management in forests and plantations | 3 | |
| Biological control and pheromones | 3 | |
| Pest surveillance and quarantine for forest products | 3 | |
| Insect pests of stored timber | 2 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
Which order undergoes complete metamorphosis (egg–larva–pupa–adult)?
A. Coleoptera
Beetles are holometabolous; bugs, grasshoppers and termites develop through nymphs (incomplete metamorphosis).
The trap-tree method against the sal heartwood borer involves:
B. Laying fresh sal billets to attract beetles, then collecting and destroying them
Fresh billets attract adults, which are collected; the method was developed against this borer.
The beehole borer of teak belongs to which family?
C. Cossidae
Xyleutes ceramica (Cossidae) bores large tunnels in living teak.
Shoot borers reduce timber quality mainly by:
C. Killing the leading shoot, causing forking and poor stem form
Repeated loss of the leader prevents a straight, single bole.
Seed beetles that destroy seeds of Acacia and Prosopis, including in storage, are:
A. Bruchids
Bruchids (Chrysomelidae: Bruchinae) develop in seeds of leguminous trees.
Which practice reduces carry-over of seed-insect populations in seed orchards?
C. Removing unharvested cones and infested seed
Sanitation removes breeding sites for the next season.
Which nursery practice helps control white grubs?
B. Deep digging to expose larvae, and light traps for adult beetles
Exposure to birds and desiccation, and trapping adults during flights, reduce populations.
Sanitation in forest IPM means:
B. Removing infested, weakened or dying trees
It removes breeding material for bark beetles and borers.
Bacillus thuringiensis subspecies kurstaki is used mainly against:
A. Caterpillars
Its toxins kill lepidopteran larvae that eat treated foliage.
Classical biological control means:
D. Introducing natural enemies from a pest's native range
It targets invasive pests and requires host-specificity testing.
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