Are the logistics confirmed for 2026?

No. The authoritative notice read is explicitly session 2024. Its fee is 5,000 FCFA and age reference is 1 January 2024. DECPC's current portal was checked, but a readable official 2026 CNFT notice was not independently obtained.

Why is this a shared CNFT resource?

The ministry groups the three CNFT specialities under the same French, mathematics and SVT entrance papers. The existing URL is preserved; separate Agriculture or Élevage copies of the same assessment should not be created.

Do the practice shares reproduce official topic weights?

Each historical written subject has coefficient 1. We give equal practice shares to those subjects; the notice publishes no internal SVT or mathematics subtopic percentages and no weight for a specified practical task.

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Sample CNFT / Concours Eaux et Forêts Practice Questions

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1Which plant tissue principally conducts water and dissolved minerals from roots toward leaves?

A.Phloem

B.Xylem

C.Leaf epidermis

D.Pollen

Explanation: Xylem conducts water and mineral nutrients through the plant. Phloem principally transports organic products such as sugars between sources and sinks.

2Why can upward-projecting breathing roots benefit a mangrove growing in oxygen-poor mud?

A.They manufacture oxygen from salt

B.They eliminate the plant's need for respiration

C.They help exchange gases with the air

D.They prevent all tidal movement

Explanation: Breathing roots, or pneumatophores, help supply oxygen to below-ground tissues in waterlogged conditions. Their role concerns gas exchange, not the creation of oxygen from salt.

3Two equal seed samples of the same viable batch are kept at the same suitable temperature with air available. One receives water and the other remains dry. What makes this a useful test of water's role in germination?

A.Both water and temperature change together

B.Dry seeds are necessarily dead

C.The experiment establishes every species' exact water requirement

D.Water availability differs while major stated conditions are held constant

Explanation: Controlling other important conditions makes the contrast informative about water availability. The result concerns the tested batch and conditions, rather than proving an exact requirement for every species.

4Why is less energy generally available to successive consumers in a food chain?

A.Organisms use energy in metabolism and some is dissipated as heat

B.All energy is converted into new consumer biomass

C.Energy is recycled indefinitely without losses

D.Predators receive energy directly from soil minerals

Explanation: Energy transfer between trophic levels is incomplete because organisms use energy and dissipate heat, and not all material is consumed or assimilated. No universal exact transfer percentage is assumed here.

5What is exchanged in a typical nitrogen-fixing association between a legume and its root-nodule bacteria?

A.The plant supplies all bacterial nitrogen while receiving only oxygen

B.Bacteria provide biologically fixed nitrogen while receiving plant-derived carbon compounds

C.Bacteria supply sunlight while the plant supplies minerals only

D.The plant receives no nutritional benefit

Explanation: The bacteria fix atmospheric nitrogen into forms the association can use. The plant supplies carbon compounds and a suitable nodule environment, illustrating mutual benefit.

6Which material most directly contributes fresh organic matter to a forest soil surface?

A.Unweathered bedrock alone

B.Quartz sand alone

C.Fallen leaves and other plant remains

D.Only dissolved sea salt

Explanation: Plant litter supplies organic material that soil organisms can decompose. Mineral particles and bedrock are different soil constituents and are not fresh organic litter.

7In a simplified whole-ecosystem carbon model, storage rises from 260 to 300 units. Photosynthesis brings in 100 units and runoff exports 10. A 20-unit transfer from living plants to soil remains inside the ecosystem. If respiration is the only other external flow, how much carbon does it release?

A.30 units

B.70 units

C.90 units

D.50 units

Explanation: Storage increases by 40 units. The external balance is 40 = 100 − 10 − respiration, giving a release of 50 units. The plant-to-soil transfer changes internal reservoirs without changing whole-ecosystem storage.

8How can a permeable barrier laid along a slope's contour help limit soil erosion?

A.Slow runoff and allow more water to infiltrate

B.Accelerate all runoff downslope

C.Remove all soil organisms

D.Make vegetation cover irrelevant

Explanation: Slowing surface flow reduces its capacity to carry soil and allows infiltration. The result still depends on suitable design, site conditions and maintenance.

9Which example is ex-situ conservation?

A.Protecting a wild population in its natural forest

B.Keeping a seed collection outside the species' natural habitat

C.Protecting a natural nesting site in place

D.Maintaining an undisturbed native woodland

Explanation: Ex-situ conservation maintains biological material outside its natural habitat. In-situ conservation protects species and ecological processes in their natural surroundings.

10Given 1 hectare = 10,000 m², how many square metres are in 3.75 hectares?

A.3,750 m²

B.375,000 m²

C.37,500 m²

D.375 m²

Explanation: Multiply 3.75 by 10,000 to obtain 37,500 m². Area conversion must use the stated hectare factor.

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