Asexual Reproduction Of Plants Flashcards
what is the basic definition
The basic definition of asexual reproduction is the production of offspring with genetic material(DNA) from onlyoneindividual
what happens in asexual reproduction
diploidorganismwill use acell,sporesortissueto producediploid offspring. The offspring, therefore, would begenetically identicalto the parent as this type of reproduction lacks the fusion of gametes.
how do flowers reproduce asexually
throughvegetative propagation. Vegetative propagationonly utilises the process ofmitosis to grow new plants.
what are the different types of vegetative propagation
grafting,cutting,layeringof young stems, the production ofstolons,tubers,bulbsandtissue culture.
what is Asexual reproduction through grafting
thephysical process of plant organ manipulation to obtain desirable properties in new plants.
- Two different plant organs (from the same species) are used in this process
- Plant organs such as stems and leaves are cut and then re-joined with other stems and leaves.
- This fusion of plant organs allows a new plant to develop.
what is Asexual reproduction through cutting
A developed (young and green) stem from an existing plant is cut and placed into a growth medium sauce such as soil or water
- After a few days, thecutting develops a root system, and the cutting can then be planted as it will grow into a new plant
what is Asexual reproduction through layering
Layeringis a technique a farmer or a gardener will use to grow more plants from existing plants.
A young shoot growing above ground will be bent and spiked below the soil’s surface and the shoot will start developing a root system of its own, thereby creating a new plant. The diagram below illustrates this process.
what is Asexual reproduction through stolon’s
Stolons are shootsthat grow above or along the soil’s surface to produce additional roots, nodes and stems
- Grass is an excellent example of how plants can asexually reproduce through stolons.
- There will be new plants with their own root and leaf systems at the ends of the stolon.
what is Asexual reproduction through planting tubers
Tubers arethickened underground parts of a stem of plants such as potato plants.
- Tubers contain high levels of starch that serve as an energy reserve for the plant to grow a new plant or additional plant organs such as roots and stems.
- The buds we see on potatoes are young plants in the early process of developing into new plants.
what is Asexual reproduction through planting bulbs
Onions and garlic are good examples of plants growing frombulbs**.
- Like tubers, bulbs store energy for plant regrowth and bulbs can sprout new roots and leaves that will grow into multiple new plants.
what is Asexual reproduction through tissue culture
Growing plants from atissue culture entails the following:
- Plant cells, plant tissue or small pieces of plant organs such as roots and leaves are placed into a sterile growth medium to stimulate growth.
- Each cell, tissue culture or small section of plant organs can grow into new plants.
- This technique is sometimes calledmicropropagation and it can produce large numbers of new plants simultaneously.