Download presentation
Presentation is loading. Please wait.
Published byMelina Osborne Modified over 6 years ago
1
Warm Up # What is the difference between sexual and asexual reproduction in plants?
2
Lesson 3: Plant Reproduction
3
Essential Questions What is the alternation of generations in plants?
How do seedless plants reproduce? How do seed plants reproduce?
4
How can you identify fruits? ACTIVITY
Examine the pictures Determine whether each item is a fruit.
5
How can you identify fruits? ACTIVITY
Look at the insides of the foods from the past slides. What do you notice? Do you agree with your previous thoughts?
6
Asexual Reproduction vs. Sexual Reproduction
Asexual reproduction – part of plant develops into a separate new plant, which is genetically identical to the parent plant Sexual reproduction – plant’s sperm combines with a plant’s egg creating a zygote with a genetic combination of its parents BrainPop- Asexual Reproduction
7
Alternation of Generations – occurs when the life cycle of an organism alternates between diploid and haploid generations
8
Reproduction in Seedless Plants
First land plants were seedless plants like mosses and ferns Grow in moist environments where sperm must swim through the water to reach an egg BrainPop – Seedless Plants
9
How do seed plants reproduce?
Pollen grain – forms from tissue in a male reproductive structure of a seed plant Produce sperm cells Wind, animals, gravity, or water carry pollen to the egg Pollination – occurs when pollen grains land on a female reproductive structure of a plant that’s the same species as the pollen grains Dormancy – time of no growth Can last days, weeks, or years BrainPop- Pollination
10
How do seed plants reproduce?
Ovule – the female reproductive structure of a seed plant where the haploid egg develops After pollination, fertilization occurs by sperm entering ovule creating a zygote Embryo – an immature diploid plant that develops from the zygote Seed contains the embryo, food supply, and a protective covering
11
Reproduction in Flowerless Seed Plants
Gymnosperm = naked seed, not surrounded by a fruit Ex. Conifers like pines, firs, redwoods, shrubs with needlelike leaves
12
Reproduction in Flowering Seed Plants (Angiosperms)
Reproduction begins in the flower Male reproductive parts: Stamen- male reproductive organ with pollen grains on the anther Filament supports the anther Female reproductive parts: Pistil – female reproductive organ where pollen lands on the stigma Ovary – at the base of the style that contains ovules BrainPop – Plant Growth
13
Life cycle of an Angiosperm
BrainPop- Seed Plants
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.