Indian Forest Service Examination (IFoS) — Forestry optional · India · Union Public Service Commission
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 Indian Forest Service Examination spread across the units of Forest Entomology & Integrated Pest Management. Difficulty: 8 easy, 25 medium, 9 hard.
| Bark beetles and wood borers | 5 | |
| Sap-suckers, gall-formers and shoot borers | 5 | |
| Biological control and pheromones | 5 | |
| Defoliators: teak defoliator and other major defoliators | 4 | |
| Population dynamics and outbreaks | 4 | |
| Pest surveillance and quarantine for forest products | 4 | |
| Insect morphology and classification relevant to forestry | 3 | |
| Seed and cone insects | 3 | |
| Nursery pests and termites | 3 | |
| Insect pests of stored timber | 3 | |
| Integrated pest management in forests and plantations | 3 |
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).
Studies at the Kerala Forest Research Institute on protecting teak from defoliation showed that:
A. Protected plantations had substantially higher volume increment
Even though teak refoliates, repeated defoliation reduces increment considerably over a rotation.
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.
Cold storage helps protect stored tree seed from insects mainly because it:
A. Slows insect development and activity
Low temperature slows development; fumigation or controlled atmospheres may be used where regulated.
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.
Why is bamboo highly susceptible to borers such as Dinoderus?
C. High starch content
Starch in culms attracts bostrichid beetles; harvesting at low-starch times and leaching or treatment help.
Sanitation in forest IPM means:
B. Removing infested, weakened or dying trees
It removes breeding material for bark beetles and borers.
Classical biological control means:
D. Introducing natural enemies from a pest's native range
It targets invasive pests and requires host-specificity testing.
HpNPV, developed for the teak defoliator, is a:
C. Virus
It is a nucleopolyhedrovirus (baculovirus).
The International Plant Protection Convention was first adopted in:
B. 1951
IPPC (1951), deposited with FAO. 1914 is India's Destructive Insects and Pests Act; 2003 its Plant Quarantine Order.
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