Reproduction, Growth and Development

Asexual Reproduction in Plants

First things first

What is Reproduction? Reproduction is one of the most

important concepts in biology, it means making a copy, or a likeness, and thereby providing for the continued existence of species. 

In simple words reproduction is a process by which organisms replicate themselves.

Types of Reproduction

Asexual Reproduction A type of reproduction which does not involve the fusion of

gametes and can occur with only one parent involved as well. For Example – Binary Fission, Budding & Vegetative Propagation

Sexual reproduction This is characterized by the fusion of male and female gametes.

This type of reproduction requires the involvement of both the parents.

For Example - Pollination

Asexual ReproductionAnd its types

Types of Asexual Reproduction

Binary fission Fragmentation Budding Spore formation Vegetative Propagation

Binary Fission

Simplest type of asexual reproduction.

Binary Fission involves a one celled organism.

Binary Fission produces new daughter cells.

Binary Fission begins with DNA but doesn’t exchange genetic info.

The cells become an exact replication of each other.

Fission in Bacteria

The single body cell of bacteria divides into two by a constriction. In bacteria, the two parts followed by a division of the cytoplasm. Each daughter cell eventually separates and grows into full size.

Fission in Amoeba

Amoeba withdraws its pseudopodia before binary fission happens. First of all, the nucleus divides and the division of the nucleus is followed by the division of the cytoplasm. A constriction develops in the body which gradually deepens and the two daughter cells are separated from one another.

Fragmentation

The multi-cellular organisms simply breaks up into smaller pieces upon maturation

Hydras and yeast are examples of budding.

These pieces or fragments grow up into new individuals.

Splitting may occur due to man made or natural damage.

The plant may develop specific organs that may be shed or easily broken off.

Budding

This is when a child grows out of the parent.

Hydras and yeast are examples of budding.

When the cell splits off the nucleus divides equally but it’s cytoplasm divides unequally.

The parent and child could stay connected and form a colony or separate.

Spore Formation

Spores contain a nucleus and a small amount cytoplasm.

Spores sprout out of decaying materials releasing spores to make more sprouts.

Some examples are bread mold, mushrooms, mosses and ferns.