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Depiction:
de
02.01.2026
<p><strong>A winter cluster of 2 kg of bees …</strong></p>
<ol>
<li>consumes <strong>more</strong> energy at 2 °C than at an internal hive temperature of 15 °C.</li>
<li>consumes <strong>less</strong> energy at 2 °C than at an internal hive temperature of 15 °C.</li>
<li>consumes <strong>the same amount of energy</strong> at 2 °C and at 15 °C because the cluster contracts as the internal hive temperature decreases.</li>
</ol>
de
02.01.2026
- ~20°C
- ~35°C
- >40°C
de
02.01.2026
- The more the temperature inside the hive decreases, the more the temperature of the core increases.
- The more the temperature inside the hive decreases, the more the temperature of the outer mantle of the cluster increases.
- The more the temperature inside the hive decreases, the more the temperature of the outer mantle of the cluster decreases, potentially dropping to as low as +2°C.
de
02.01.2026
- its surface-to-volume ratio increases
- its surface-to-volume ratio approaches that of a sphere
- its surface-to-volume ratio decreases
de
02.01.2026
- −5 °C
- +2 °C
- +15 °C
- Other
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02.01.2026
(one or more answers possible)
- It is a protein that slows down the “ageing” of worker bees?
- It modulates foraging behaviour by favouring pollen collection over nectar collection?
- It does not extend the lifespan of the queen?
- It is synthesised in the bee’s fat body?
- It does not stimulate the hypopharyngeal glands and the production of royal jelly?
- It is not involved in the immune mechanisms of bees?
- It modulates the social life of the entire colony?
de
02.01.2026
Photo of a bee with wings held in a cross (or K-shaped) position.
What should be thought about this bee?
- The insect positions its wings to release a trail pheromone that allows nearby foragers to relocate the nectar source.
- In case of high temperature, the bee stretches its wings to facilitate heat dissipation.
- Bee infected with acarine disease
de
02.01.2026
On a fine day at the end of May, you observe numerous bees clustered in front of the hive entrance:
You infer that:
- A swarm is preparing to depart.
- The “climate bees” are ventilating to reduce the humidity of the abundant spring nectar flow.
- The workers are performing a calling behaviour to guide the foragers back to the hive.
de
02.01.2026
What do you see?
How do you interpret this bottom drawer (20 November)?
02.01.2026
What is the average annual amount of pollen collected by a well-developed production colony?
- 5 kg
- 30 kg
- 220 kg
02.01.2026
- For the queen during the six days preceding capping
- For the workers
- For the drones
- For all larvae
02.01.2026
Which answers are correct?
1. Epigenetics directly modifies the DNA sequence.
2. Epigenetics modulates gene expression without modifying the genome.
3. Epigenetic mechanisms are always stably transmitted across several generations.
4. Epigenetics is influenced only by hereditary factors and not by the environment.
5. Unlike genetics, epigenetic mechanisms are reversible.
6. Epigenetic modifications have no effect on the phenotype.
02.01.2026
- Accepts the introduction of a mated queen
- Accepts the introduction of a virgin queen
- Accepts the introduction of a queen cell whose pupa is about to emerge
- Can rear a queen cell from fresh open brood
- Allows an acceleration of varroa reproduction
02.01.2026
- Like other arthropods, the vision of the varroa mite is similar to that of the honey bee with regard to the colour spectrum (ultraviolet).
- The vision of the varroa mite is similar to that of humans with regard to the perception of the colour red.
- Is completely absent.
- The achromatopsic vision of the varroa mite allows it to distinguish only between black and white.
02.01.2026
- By transmitting viruses
- By increasing the bees’ susceptibility to diseases
- By destroying the colonies’ food reserves
- By reducing the lifespan of worker bees
- By decreasing the quality of the food produced by nurse bees
- By causing varroosis, which gradually weakens the colonies
02.01.2026
Which answer(s) is/are correct?
In spring:
- The approximately 500 gynes (fertilised queens) that left the secondary nest hidden at the top of a tree and survived the winter build a primary nest to found a new colony.
- In spring, the gynes (fertilised queens) emerge from their winter shelter to feed on nectar.
- The founding queens (queens building an embryonic nest) lay diploid eggs from which workers emerge that are approximately the same size as the queens.
- The gynes (fertilised queens) engage in fierce fighting to usurp embryonic nests.
- The first workers reared by the founding queens are larger than the workers reared by subsequent generations of workers.
- The workers of the Asian hornet feed their queen with a royal jelly–like substance reminiscent of that produced by nurse bees of the honey bee.
02.01.2026
Are the drones, sons of a selectively bred queen of the “F0” generation, genetically identical (same DNA)?
- YES
- NO
02.01.2026
Water is indispensable for the basic metabolism of each individual in the colony. The “nurse bees” use it to produce royal jelly and brood food; the “climate bees” use it for thermoregulation and for controlling humidity inside the hive …
How much water does a colony need over the course of a year?
- About 20 litres
- About 33 litres
- More than 50 litres
02.01.2026
- No, they live solitarily both on bees and in the brood.
- Yes, by high-frequency vibrations they detect their conspecifics.
- Yes, through the release of pheromones.
- Yes, through changes in the coloration of their cuticle, with immature stages being whitish and adults reddish-brown.