Reproduction in Plants
What is the term for the yellow powdery substance that contains plant sperm, released from the male reproductive organs of plants?
Pollen
What is the definition of a species?
A species is characterized by the ability to produce offspring which can in turn produce their own offspring.
What is the term for seed dispersal facilitated by wind?
Anemochory
What is the lightest element on the periodic table?
Hydrogen
What is the term for the second process in the sexual reproduction of plants, wherein the sperm reaches the egg to produce a zygote?
Fertilization
What are the two differences between sexual and asexual reproduction?
1 vs. 2 parents, genetic distinction vs. production of a genetic clone.
What is the difference between R and K parenting strategies?
R-selected - lots of kids, low parental care
K-selected - few kids, high parental care
In late 1932, the Australian army fought and lost a war to this species of flightless bird.
The Australian emu.
Name 4 types of pollinator organisms.
Beetles, hummingbirds, bats, butterflies, moths, bees, etc.
What role does DNA play in reproduction?
DNA contains all the genetic information required to produce a new organism, combined between both parents in sexual reproduction. Therefore, it functions as the carrier of the instructions to produce the new cells, and the specific makeup of that DNA carries parental traits (which is why people tend to look a bit like their parents).
Why do plants practice seed dispersal methods?
Plants cannot have seeds growing nearby to them; if seeds take root too close to the parent, the new offspring plants will compete with the parent for resources.
What color is lobster blood?
What is the term for the type of asexual reproduction in plants wherein a full plant can be sprouted from a smaller part of the parent?
Vegetative Propagation
Why do animals practice courtship behaviors?
To broadcast to potential mates that they possess traits that make them more likely to pass on traits with high fitness, thereby increasing their chances for reproduction overall.
Explain why simply producing offspring isn't enough to say that an animal has "successfully reproduced."
The animal's offspring also need to survive to pass their genes on to the next generation.
Adult humans have 206 bones in their body. How many bones do babies have?
Between 275 and 300, depending on the baby. This is because the baby's bones fuse as they grow, decreasing the total number.
After the development of the seed, the ovary of a flower will develop into a _________.
Fruit
Traits that make an animal less fit to survive are selected out via pressure events, leaving behind the more-fit animals to reproduce and pass their traits forward.
By this process, only traits that make an animal more fit to survive are passed onto the next generation, and so on and so forth until the cumulative adaptations within an organism make it into a new organism entirely.
Excluding anemochory, define three forms of seed dispersal without the use of your notes. You don't need to know the technical term, just the method (e.g. dispersal by wind).
Ballochory (explosive dispersal), barochory (gravity dispersal), zoochory (animal dispersal), hydrochory (water dispersal), pyriscence (fire-triggered dispersal).
The moon rotates on its own axis at the same speed that it revolves around the Earth, creating a situation where it is "tidally locked." This means that the same side of the moon is always facing us.