Reproduction in plant

Reproduction in plant notes

Here are clear, exam-ready notes on Reproduction in Plants :

What is Reproduction?

Reproduction is the biological process by which plants produce new individuals of the same species.

Types of Reproduction in Plants

1. Asexual Reproduction

Involves one parent only

No fusion of gametes

Offspring are genetically identical (clones)

Methods of Asexual Reproduction:

a) Vegetative Propagation

New plants grow from roots, stems, or leaves

Examples:

Potato (stem tuber)

Ginger (rhizome)

Bryophyllum (leaf buds)

b) Budding

A small bud grows and develops into a new plant

Example: Yeast (though not a plant, often studied here)

c) Fragmentation

Parent plant breaks into pieces; each grows into a new plant

Example: Spirogyra (algae)

d) Spore Formation

Spores are produced in sporangia and grow into new plants

Examples: Ferns, mosses

2. Sexual Reproduction

Involves two parents (male and female gametes)

Leads to genetic variation

Parts of a Flower (Reproductive Organ)

Stamen (Male part)

Anther: produces pollen

Filament: supports anther

Pistil/Carpel (Female part)

Stigma: receives pollen

Style: connects stigma to ovary

Ovary: contains ovules

Pollination

Transfer of pollen from anther to stigma

Types:

Self-pollination same flower/plant

Cross-pollination between different plants

Agents:

Wind, water, insects, birds

Fertilization

Fusion of male and female gametes

Forms a zygote

Post-Fertilization Changes

Zygote embryo

Ovule seed

Ovary fruit

Seed Germination

Conditions required:

Water

Oxygen

Suitable temperature

Importance of Reproduction

Ensures survival of species

Maintains population

Produces variation (important for evolution)

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