Asexual reproduction Flashcards
What are the three strategies for asexual reproduction? Explain
- Spores. Mitosis and production o spores able to grow into new individuals, can survive harsh conditions and are easily spread far.
- Regeneration. They replace body parts that have been lost, or in fragmentation, they can reproduce themselves asexually from fragments of their body.
- Budding. Outgrowth from parent that produces smaller identical individual, becoming detached eventually
What is vegetative propagation?
Kind of budding, a plant forms a structure that develops into a fully differentiated new plant.
What is the most accurate measure of growth and why, and why can’t it always be used?
Measuring dry mass as water content of organisms an vary.
But if you remove all the water, you kill the organism so you can’t measure further growth. You’d need to grow large samples of identical organisms and take random samples and dry them but it’s unethical to do this to animals.
How does discontinuous growth, like in an insect, work?
They shed one exoskeleton, and while the new one is soft, they expand the body by taking in air or water. Once it’s hardened, the air/water is released and there is room for the tissues to increase in size and mass.
Where does mitosis in plants take place, and for how long in the lifetime?
Meristems, just behind the tip of stem/root where the cells divide actively ALWAYS.
