ICFRE Scientist and technical recruitment

India · Indian Council of Forestry Research and Education · professional · unverified source

67practice questions written to this syllabus
5subjects

Format

Unverified. Scientist-B recruitment has used a written test and interview; details vary by notification.

Sections

Over the years

Unverified. ICFRE runs institutes such as the Forest Research Institute (Dehradun), IWST (Bengaluru), IFGTB (Coimbatore) and TFRI (Jabalpur).

Official source: https://www.icfre.gov.in/

Subjects this exam draws on

Biometry, Statistics & Computing for Forestry2 questionsForest Genetics & Tree Improvement15 questionsVegetative Propagation & Forest Biotechnology24 questionsForestry Research Methods & Experimental Design15 questionsLandscape Ecology & Forest Ecosystem Modelling11 questions

Five practice questions, worked

Original questions written to this exam's published syllabus and pattern. Not past papers.

1. Pan-tropical biomass equations improve predictions across sites by including which variables with diameter?

  1. Bark thickness and crown colour
  2. Soil pH and rainfall only
  3. Leaf area and stem form
  4. Tree height and wood density
Answer and working

D. Tree height and wood density

AGB ≈ f(ρD²H) in the Chave equations; height and wood density vary widely among sites and species.

Biometry, Statistics & Computing for Forestry · Non-linear regression for tree allometry

2. High-grading, the repeated removal of the best trees from a forest, is a form of:

  1. Positive mass selection
  2. Genetic engineering
  3. Dysgenic selection
  4. Clonal propagation
Answer and working

C. Dysgenic selection

Removing the best phenotypes and leaving the worst to regenerate can lower genetic quality.

Forest Genetics & Tree Improvement · Variation in natural populations and its causes

3. Cuttings from side branches of Araucaria grow horizontally like branches for years. This is:

  1. Cyclophysis
  2. Topophysis
  3. Somaclonal variation
  4. Apical dominance
Answer and working

B. Topophysis

Topophysis is the persistence of traits linked to the propagule's position of origin.

Vegetative Propagation & Forest Biotechnology · Principles of vegetative propagation

4. A thinning trial finds no significant effect with three replicates and a very high CV. The correct interpretation is that:

  1. Thinning has been proven to have no effect on growth
  2. The trial may have lacked power to detect a real effect
  3. The null hypothesis has been shown to be true
  4. The result proves that the alternative hypothesis is false
Answer and working

B. The trial may have lacked power to detect a real effect

Failing to reject H₀ in a low-power study is uninformative; absence of evidence is not evidence of absence.

Forestry Research Methods & Experimental Design · Scientific method and research problem formulation

5. Two forest cells touch only at their corners. How many patches do they form under the four-neighbour and eight-neighbour rules?

  1. Two under four-neighbour; one under eight-neighbour
  2. One under both rules
  3. Two under both rules
  4. One under four-neighbour; two under eight-neighbour
Answer and working

A. Two under four-neighbour; one under eight-neighbour

The four-neighbour rule links only edge-sharing cells; the eight-neighbour rule also links diagonals. This changes patch counts and sizes.

Landscape Ecology & Forest Ecosystem Modelling · Landscape metrics and their interpretation

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