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REPRODUCTIO
N IN PLANTS
Report by Ashley Leanne Luza
Reproduction
◦ Reproduction is production of offspring by a sexual or asexual process.
◦ Reproduction is process by which organisms replicate themselves.
◦ Reproduction is the biological process by which new individual organisms
– "offspring" – are produced from their "parents".
◦ Reproduction is to produce new generation.
Reproduction in plants
Two types of Reproduction
◦Sexual Reproduction
◦Asexual Reproduction
SEXUAL
REPRODUCTION
What is Sexual Reproduction?
◦ Sexual reproduction is a form of reproduction where two gametes fuse
together.
◦ In sexual reproduction, two parents are involved in producing a new
individual. Offspring is produced by the fusion of gametes (sex cells) from
each parent. Animals like dog, cats, lions, giraffe, humans, etc. All
reproduce sexually.
◦ Majority of the flowering plants reproduce sexually.
Flowers
◦ The flower is the reproductive part of a plant, both male and female
gametes are produced by flowers. Sexual reproduction in plants takes
place in flowers.
◦ The flower is the reproductive unit of some plants (angiosperms).
Parts of the flower include petals, sepals, one or more carpels (the
female reproductive organs), and stamens (the male reproductive
organs).
Trivia!!
◦ Did you know that a flower may consist of either stamen or pistil or
both. Based on this, a flower can be either unisexual or bisexual.
Reproduction in plants
Parts of a Flower
◦ Petals- attract insects and hummingbirds to help in the work
◦ Sepals- are the lower, or outermost, part of the flower. They fold over
the tender, closed bud and protect it from cold and other injuries while
it is developing.
◦ Receptacle- an enlarged area at the apex of a stem that bears the
organs of a flower or the florets of a flower head.
Two types of reproductive
systems of flowers
Female Reproductive
System
◦ The pistil is the collective term
for the carpel(s). Each carpel
includes an ovary, a style, and
a stigma
Male Reproductive
Sytem
◦ Stamens are the male
reproductive parts of flowers. A
stamen consists of an anther
and a filament. The pollen
consists of the male
reproductive cells; they fertilize
ovules.
Two types of reproductive
systems of flowers
Female Reproductive
System
Male Reproductive
System
HOW DO FLOWERS
REPRODUCE?
Reproduction in plants
Pollination
◦ is the process of transferring pollen grains from the anther – male part of a flower, to
the stigma – female part of a flower.
Two types of Pollination:
◦ Self-Pollination: A pollination where the pollen transfer takes place between the
anther and stigma of the same flower.
◦ Cross-Pollination: A pollination where the pollen transfer takes place between the
anther and the stigma of different flowers of the same plant or different plants of the
same species.
Seeds
◦ A seed is an embryonic plant enclosed in a protective outer covering .
The formation of the seed is part of the process of reproduction in seed
plants, the spermatophytes, including the gymnosperm and
angiosperm plants.
Reproduction in plants
Embryo
PARTS OF THE EMBRYO
◦ Hypocotyl- lower part of the stem
◦ Radicle or embryonic root- the primary root an the first organ to
emerge in the plants
◦ Epicotyl- upper part of the stem andd gives rise to the shoot
Reproduction in plants
ASEXUAL
REPRODUCTION
What is Asexual
Reproduction?
◦ Asexual reproduction is a type of reproduction by which offspring
arise from a single organism, and inherit the genes of that parent only;
it does not involve the fusion of gametes, and almost never changes
the number of chromosomes.
◦ Asexual Reproduction, in short, is like making clones
HOW DO PLANTS
ASEXUALLY
REPRODUCE?
Types of Vegetative
Reproduction
◦ Stolons or Runners
◦ Rhizomes
◦ Tubers
◦ Bulbs
◦ Corm
Stolons or Runners
◦ It describes a horizontal stem running across or just under the ground.
A runner is a stolon which runs on the ground; a rhizome is the same
thing, but running underground.
Rhizomes
◦ Rhizome, also called creeping rootstalk, horizontal
underground plant stem capable of producing the shoot
and root systems of a new plant.
Tubers
◦ Tuber, specialized storage stem of certain seed plants. Tubers are
usually short and thickened and typically grow below the soil.
◦ Vegetables which grow underground on the root of a plant.
Bulbs
◦ a resting stage of a plant (such as the lily, onion, hyacinth, or tulip) that
is usually formed underground and consists of a short stem base
bearing one or more buds enclosed in overlapping membranous or
fleshy leaves.
Corm
◦ A corm, bulbo-tuber, or
bulbotuber is a short, vertical,
swollen underground plant stem
that serves as a storage organ
that some plants use to survive
winter or other adverse
conditions such as summer
drought and heat.
THANK YOU
Credits to:
◦ http://b4fa.org/bioscience-in-brief/plantbreeding/how-do-plants-
reproduce-sexually/
◦ www.britannica.com
◦ https://byjus.com/biology/sexual-reproduction-plants/
◦ https://kids.britannica.com/students/article/flower/274354/200872-toc

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Reproduction in plants

  • 1. REPRODUCTIO N IN PLANTS Report by Ashley Leanne Luza
  • 2. Reproduction ◦ Reproduction is production of offspring by a sexual or asexual process. ◦ Reproduction is process by which organisms replicate themselves. ◦ Reproduction is the biological process by which new individual organisms – "offspring" – are produced from their "parents". ◦ Reproduction is to produce new generation.
  • 4. Two types of Reproduction ◦Sexual Reproduction ◦Asexual Reproduction
  • 6. What is Sexual Reproduction? ◦ Sexual reproduction is a form of reproduction where two gametes fuse together. ◦ In sexual reproduction, two parents are involved in producing a new individual. Offspring is produced by the fusion of gametes (sex cells) from each parent. Animals like dog, cats, lions, giraffe, humans, etc. All reproduce sexually. ◦ Majority of the flowering plants reproduce sexually.
  • 7. Flowers ◦ The flower is the reproductive part of a plant, both male and female gametes are produced by flowers. Sexual reproduction in plants takes place in flowers. ◦ The flower is the reproductive unit of some plants (angiosperms). Parts of the flower include petals, sepals, one or more carpels (the female reproductive organs), and stamens (the male reproductive organs).
  • 8. Trivia!! ◦ Did you know that a flower may consist of either stamen or pistil or both. Based on this, a flower can be either unisexual or bisexual.
  • 10. Parts of a Flower ◦ Petals- attract insects and hummingbirds to help in the work ◦ Sepals- are the lower, or outermost, part of the flower. They fold over the tender, closed bud and protect it from cold and other injuries while it is developing. ◦ Receptacle- an enlarged area at the apex of a stem that bears the organs of a flower or the florets of a flower head.
  • 11. Two types of reproductive systems of flowers Female Reproductive System ◦ The pistil is the collective term for the carpel(s). Each carpel includes an ovary, a style, and a stigma Male Reproductive Sytem ◦ Stamens are the male reproductive parts of flowers. A stamen consists of an anther and a filament. The pollen consists of the male reproductive cells; they fertilize ovules.
  • 12. Two types of reproductive systems of flowers Female Reproductive System Male Reproductive System
  • 15. Pollination ◦ is the process of transferring pollen grains from the anther – male part of a flower, to the stigma – female part of a flower. Two types of Pollination: ◦ Self-Pollination: A pollination where the pollen transfer takes place between the anther and stigma of the same flower. ◦ Cross-Pollination: A pollination where the pollen transfer takes place between the anther and the stigma of different flowers of the same plant or different plants of the same species.
  • 16. Seeds ◦ A seed is an embryonic plant enclosed in a protective outer covering . The formation of the seed is part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm plants.
  • 18. Embryo PARTS OF THE EMBRYO ◦ Hypocotyl- lower part of the stem ◦ Radicle or embryonic root- the primary root an the first organ to emerge in the plants ◦ Epicotyl- upper part of the stem andd gives rise to the shoot
  • 21. What is Asexual Reproduction? ◦ Asexual reproduction is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes, and almost never changes the number of chromosomes. ◦ Asexual Reproduction, in short, is like making clones
  • 23. Types of Vegetative Reproduction ◦ Stolons or Runners ◦ Rhizomes ◦ Tubers ◦ Bulbs ◦ Corm
  • 24. Stolons or Runners ◦ It describes a horizontal stem running across or just under the ground. A runner is a stolon which runs on the ground; a rhizome is the same thing, but running underground.
  • 25. Rhizomes ◦ Rhizome, also called creeping rootstalk, horizontal underground plant stem capable of producing the shoot and root systems of a new plant.
  • 26. Tubers ◦ Tuber, specialized storage stem of certain seed plants. Tubers are usually short and thickened and typically grow below the soil. ◦ Vegetables which grow underground on the root of a plant.
  • 27. Bulbs ◦ a resting stage of a plant (such as the lily, onion, hyacinth, or tulip) that is usually formed underground and consists of a short stem base bearing one or more buds enclosed in overlapping membranous or fleshy leaves.
  • 28. Corm ◦ A corm, bulbo-tuber, or bulbotuber is a short, vertical, swollen underground plant stem that serves as a storage organ that some plants use to survive winter or other adverse conditions such as summer drought and heat.
  • 30. Credits to: ◦ http://b4fa.org/bioscience-in-brief/plantbreeding/how-do-plants- reproduce-sexually/ ◦ www.britannica.com ◦ https://byjus.com/biology/sexual-reproduction-plants/ ◦ https://kids.britannica.com/students/article/flower/274354/200872-toc