Question

Which of the following organisms do not reproduce?
a. Mule
b. Worker bees
c. Infertile human couples
d. All of these

Answer 1

Reproduction is not a defined feature of living beings. In the above options all are living beings but they don’t reproduce which has their own reasons.

**Complete answer :**
The first option is mule. It is the offspring of male donkey and female horse, it is considered a hybrid animal.

Horse and donkey are different species, where they have different number of chromosomes
The size of mules remain the same as horse and donkey but they are stronger than the parents.
As they have different structure and different number of chromosomes, which prevents them from pairing up properly, which makes mules infertile, so mules cannot reproduce they are hybrid animals and they are infertile
Second option is worker honey bees, in the colony of honey bees usually there are three types of bees
They are queen bees, drones and worker bees
Among them queen bee is fertile female among the colony and drones are males of the colony which are fertile
Where as worker bees are infertile in nature which usually perform various activities in the colony of honey bees
Whereas the third option is infertile human couples,
In humans, infertility in males is commonly due to less semen whereas infertility in females is due to ovulatory problems and problems in mensuration, etc.

From the above explanation, all of them are considered as infertile

Note: Humans are considered as the highest and most developed animals on earth, though they are infertile, due to present technology there are a lot of treatments for infertility, which may not succeed at all, most of the treatments will be helpful.