You can explain the difference between sexual and asexual reproduction.
You can explain the differences/similarities in DNA between parent(s) and offspring in both sexual and asexual reproduction.
You can provide and recognize various examples of how plants and other organisms reproduce asexually.
Homework U6 B5
Asgmt 1-7, 3c
OR challenge
Asgmt 4-9
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Slide 1: Slide
BiologieMiddelbare schoolhavo, vwoLeerjaar 1
This lesson contains 15 slides, with interactive quizzes, text slides and 1 video.
Lesson duration is: 45 min
Items in this lesson
B5 Asexual reproduction
Take off your jacket
Put your things on your desk
Book/Laptop Notebook
Bag on the floor
Read pages 190-194
timer
4:00
Lessongoals
You can explain the difference between sexual and asexual reproduction.
You can explain the differences/similarities in DNA between parent(s) and offspring in both sexual and asexual reproduction.
You can provide and recognize various examples of how plants and other organisms reproduce asexually.
Homework U6 B5
Asgmt 1-7, 3c
OR challenge
Asgmt 4-9
Slide 1 - Slide
Wheel of homework
Go to Lessonup.app and use this code
Reward
Penalty
Slide 2 - Slide
How many visible sepals can you see on the right flower? (number)
Slide 3 - Open question
How many visible styles can you see on the right flower? (number)
Slide 4 - Open question
In the ovary of an apple blossom, there are 8 ovules. During the blooming period of this plant, 6 pollen grains from apple blossoms, 5 from sunflowers, and 2 from a rose land on the flower's stigma.
How many seeds do you expect to find in the fruit eventually? (number)
Slide 5 - Open question
In reality, an enormous number of pollen grains end up on the stigma of most flowers. However, not all ovules always develop into seeds. What could be a reason for this?
Slide 6 - Open question
Sexual reproduction
Reproduction in which:
a male and female sex cell fuse
Involves fertilization
Examples:
Reproduction in most animals
Reproduction through flowers
Asexual reproduction Reproduction in which no fertilization/sex cells are required.
A part of the (parent) organism becomes a new organism.
A sperm (male sex cell) and ovum/egg cell (female sex cell) fuse, this becomes the new 'child'
A pollen grain (male sex cell) and an egg cell (female sex cell) fuse, resulting in the formation of a plant embryo (baby plant).
Potatoes are thickened parts of the stem (tuber) of a potato plant. If you plant them, a new plant will grow from them.
In the bulb of, for example, a daffodil, smaller bulbs develop. If you plant these, daffodils also grow from it.
Bacteria reproduce by cell division. No fertilization is needed. 1 bacteria will 'copy' itself and become 2 bacteria.
Ginger is the root of the ginger plant. These roots grow underground and form rhizomes; when these roots separate from each other, two new plants are formed.
Strawberry plants, make stems that move above ground (runners) these will at some point start forming new plants. If these runners are cut, two new plants have formed
Slide 7 - Slide
Cells of orgnanisms contain DNA. What organelle stores the DNA? (1 word)
Slide 8 - Open question
DNA is usually curled up into wormlike things. What are these 'worms' called? (1 word, plural)
Slide 9 - Open question
DNA and reproduction
Sexual reproduction
Half of the DNA of both parents, becomes new DNA of offspring
Asexual reproduction
DNA of the parent and offspring is the same.
Slide 10 - Slide
Slide 11 - Video
Plant propagation
People propagate plants:
Cuttings = cutting a piece of stem from a plant and letting it grow into a new plant.
Tissue cultivation = cutting a bud (growing tip) from a plant, letting it grow in tubes into larger plants, optionally repeating the process.
using asexual reproduction to quickly turn 1 plant into multiple.