Features of Plants for Reproduction
Introduction
Living organisms produce their offspring similar to themselves through a process called reproduction. Plants also undergo reproduction for continuity of life on Earth.
Explanation
Reproduction – Production of a offspring from parents is known as reproduction. There are different ways plants produce their offspring; the modes of reproduction are:
- Sexual reproduction
Asexual reproduction
An indivual organism gives rise to a new organism without the fusion of gametes. The new individual is identical to their parent.
Asexual modes of reproduction
- Fission- Parent cell divides itself into two equal cells, example bacteria.
- Budding- A bud is formed on the parent individual, it develops and detaches from the parent body and develops as a new individual.
- Spore formation- Plants like ferns, moss, fungi reproduce through spore formation; each spore germinates and develops into new individual.
- Regeneration- When the organism is cut or broken into pieces, each piece starts growing as an individual, e.g., – when a lizard loses its tail, a new tail grows.
- Fragmentation– The organism breaks and each piece develops into a new individual.
Vegetative Propagation:
Vegetative propagation is asexual method of reproduction that occurs in leaves, roots and stem.Two types of vegetative propagation:
- Natural
- Artificial
Stem
Runners grow horizontally above the ground. The buds are formed at the nodes of the runners.
Roots
New plants emerge out of swollen, modified roots known as tubers. Buds are formed at the base of the stem.
Leaves
Leaves of a few plants get detached from the parent plant and develop into a new plant.
Bulbs
Bulbs have an underground stem to which the leaves are attached. These leaves are capable of storing food.
Artificial Vegetative Propagation-
Cutting
In this method, a part of a plant is cut along with the node and is buried in the soil.
Grafting
In this method, the parts of two different plants are joined together such that they continue to grow as a single plant. The root is known as the stock. The other plant is known as the graft.
Layering
It is the method in which a stem attached to a plant is lowered in the ground and covered with soil. The stem grows roots while attached to the parent plant and then detaches as an independent plant.
Sexual reproduction:
In this reproduction process two parents are involved in producing new individual,i.e., one male and one female is required to give rise to a new individual.
Flowers contain male sex organs called as stamens and female sex organs called as pistils. Anther is a part of the stamen that contains pollen; these pollen grains move through the pistil called as stigma.
Self pollination – Transfer of pollen grains from the anther to the stigma of a same flower or to the stigma of another flower of same plant.
Cross pollination – Transfer of pollen from anther to the stigma of another flower of a different plant.
Related topics
Mutation Theory of Evolution and Types
Introduction: Cell is the basic unit of living organisms from bacteria to humans all are made up of cells, which contain a nucleus and the nucleus contain DNA Explanation: Mutations is a sudden changes in chromosomal DNA., They cover only those changes that alter the chemical structure of the gene at the molecular level. These […]
Read More >>Lamarckism: Postulates and Drawbacks
Introduction: Evolution states that distinct types of plants, animals, and other living organisms on Earth have their origin in pre-existing life forms. It is a variation in the inherited characteristics (traits) of biological populations over successive generations. These traits are the expressions of genes that are passed on from parents to offspring in the course […]
Read More >>Biodiversity: Classification of Living Organisms
Introduction to Biodiversity: Fig No.1 Biodiversity Classification Fig No.2 Different organisms The Characteristics of Living Organisms Fig No. 3 Classification Diversity in Living Organisms The Five Kingdom Classification The five kingdoms in this widely accepted classification are made up of species with similar growth and functioning characteristics. Organisms are classified into five kingdoms based on […]
Read More >>Mitochondria – The power House of a Cell
The Cell Organelles – Mitochondria Introduction: Powerhouse Of Cell Mitochondria are primarily responsible for converting nutrients into energy. They yield ATP molecules to fuel cell activities. As they do aerobic respiration, mitochondria are often referred to as the powerhouse of the cell. There are three stages of aerobic respiration. Those three stages are: Origin Of […]
Read More >>
Comments: