Biology

Difference between monoecious and dioecious

Main difference

The main difference between monoecious and dioecious is that monoecious organisms have female and male reproductive organs present in the same individual, while dioecious organisms have male and female organs in separate individuals.

Monoico v s. Of two sexes

On the basis of the presence of sexual organs, organisms are divided into two types, that is, monoecious and dioecious. These terms are used to discuss the reproductive behavior of plants. Monoecious are bisexual organisms, that is, they have male and female organs. On the other hand, the dioecious is the unisexual organism, that is, it has male and female reproductive organs in separate individuals. About 90% of plant species are bisexual and are called perfect flowers. They have both staminate (stamen or male part) and pistillate (carpels or female part) present in the same flower. Dioecious plants, on the other hand, have male and female flowers on separate plants.

Monoecious plants are capable of both cross-pollination and self-pollination, while dioecious plants are only capable of cross-pollination. All monoecious plants can produce seeds due to the presence of female flowers. On the other hand, in dioecious plants, the seed is produced only by female plants. Monoecious plants show low genetic variations and more homozygosity due to self-pollination, while there are more genetic variations and higher heterozygosity in dioecious plants due to cross-fertilization. Earthworms, slugs, and corn, etc. are examples of monoecious organisms. On the other hand, mammals, birds and papaya, etc. are examples of dioecious organisms.

Comparative chart

Monoecious Of two sexes
A type of organism that has both male and female reproductive organs present in the same individual is known as monoecious. A type of organism that has male and female reproductive organs present in separate individuals is known as dioecious.
Literal meaning
The word “Monoic” literally means “a house.” The word “dioecious” literally means “two houses.”
Sex
They are bisexual. They are unisexual, that is, female or male.
Type of flowers
Both male and female monoecious flowers are on the same plant. Male and female flowers are present on different plants.
Gametes
In monoecious plants, the female and male gametes are produced on the same plant. In dioecious plants, the male and female gametes are produced on separate plants.
Playback type
They show uniparental reproduction. Dioecious shows biparental reproduction.
Pollination
Monoecious organisms show both self and cross fertilization. Dioecious plants are only capable of cross fertilization.
Genetic variations
Monoecious plants show low genetic variations and more homozygosity due to self-pollination. There are more genetic variations and greater heterozygosity in dioecious plants due to cross fertilization.
Reproduction in isolation
Monoecious plants can reproduce easily, even in isolation. Dioecious plants cannot reproduce in isolation.
Seed production
All monoecious plants can produce seeds due to the presence of the female flower. In dioecious plants, only female plants produce a seed.
Examples of plants
Pumpkin, walnut, oak, hazelnut, and corn are common monoecious plants. Asparagus, biloba trees, papaya, marijuana ( cannabis ), willow, holly, ginkgo, and poplar are dioecious plants.
Examples of animals
Jellyfish, earthworms and slugs, etc. are examples of monoecious animals. Reptiles, insects, mammals, and birds are examples of dioecious animals.
What is monoecious ?

In the word “Monoic”, Mono means “one” and this term literally means “a house.” It is a type of organism with male and female reproductive organisms present in the same individual. So, they are bisexual and show uniparental reproduction. Both male and female gametes are formed in the same organism and can fuse by themselves or by cross-fertilization. Monoecious plants show fewer genetic variations and more homozygosity due to self-pollination. Monoecy is most commonly found in Squash, Walnut, Oak, Hazelnut, Corn, Jellyfish, Planarians, and Slugs, etc.

What is dioecious ?

In the word “Dioic”, di means “two” and this term literally means “two houses.” It is a type of organism with male and female reproductive organisms in different individuals. So, they are unisexual and show biparental reproduction. Both male and female gametes are formed in different organisms and can be fused only by cross fertilization. So there are more genetic variations and higher heterozygosity in dioecious plants. Dioecia is most commonly found in marijuana ( cannabis ), asparagus, biloba trees, papaya, willow, holly, ginkgo, mammals, reptiles, insects, and birds, etc.

Key differences

  1. A type of organism that has male and female reproductive organs in the same individual is known as monoecious, while a type of organism that has male and female reproductive organs in separate individuals is known as dioecious.
  2. The word “monoecious” literally means “one house”, on the other hand, the word “dioecious” literally means “two houses.”
  3. Monoics are bisexual; on the contrary, dioecious are unisexual, that is, male or female.
  4. In monoecious plants, there are male and female flowers on the same plant on the other side. In dioecious plants, female and male flowers are present on separate plants.
  5. In monoecious plants, male and female gametes occur on the same plant, while in dioecious plants, male and female gametes occur on separate plants.
  6. Monoecious organisms show uniparental reproduction. On the other hand, dioecious organisms show biparental reproduction.
  7. Monoecious organisms show both self and cross fertilization, whereas dioecious plants are only capable of cross fertilization.
  8. Monoecious plants show low genetic variations and more homozygosity due to self-pollination, while there are more genetic variations and higher heterozygosity in dioecious plants due to cross-fertilization.
  9. Monoecious plants can reproduce easily, even in isolation. On the other hand, dioecious plants cannot reproduce in isolation.
  10. All monoecious plants can produce seeds due to the presence of the female flower. On the other hand, in dioecious plants, the seed is produced only by female plants.
  11. Walnut, oak, hazelnut, pumpkin, and corn are examples of common monoecious plants, while asparagus, biloba trees, papaya, marijuana (cannabis), willow, holly, ginkgo, and poplar are examples of dioecious plants.
  12. Jellyfish, planarians, earthworms, and slugs are examples of monoecious animals. On the other hand, mammals, reptiles, insects, and birds are examples of dioecious animals.
Final Thought

The above discussion summarizes that monoecious and dioecious are the type of organisms that rely on reproductive behavior. Monoecious organisms are bisexual organisms with male and female reproductive organs that exist in the same individual. On the other hand, dioecious are unisexual organisms with male and female reproductive parts present in different individuals.

Leave a Reply

Your email address will not be published. Required fields are marked *

Check Also
Close
Back to top button