19
votes
Is it scientifically sound to pool repeated measurements?
If you use the configuration on the left, your variance across tubes reflects variance between individuals.
If you use the configuration on the right, your variance across tubes reflects primarily ...
- 35k
18
votes
Accepted
This looks like it was somebody’s home - but who?
That looks similar to the dried fruit of Echinocystis lobata (wild cucumber), which grows throughout New York. The fruit is about the right size (~3 cm) and shape, whereas the best alternative I can ...
- 5,203
7
votes
Accepted
Coniferous tree with alternating bunches of short needles (Toronto area)
Short Answer
Larix laricina, commonly called Tamarack or American Larch is a deciduous conifer with short-needle-like leaves arranged in bunched fascicles in a alternating (sometimes whorled) ...
- 26.5k
3
votes
Accepted
Shape of the first leaves of a plant
They are referred to as cotyledons (seed-leaves).
Apples as specified in the question are dicotyledons, they have two seed-leaves. Some other plants are monocotyledonous, i.e. just have a single seed ...
- 1,035
2
votes
Tree identification in the Caribbean
The photos of this tree indicate that it is a horseradish-tree (Moringa oleifera). See https://rngr.net/publications/common-trees-of-puerto-rico-and-the-virgin-islands as well as google searches of ...
- 336
1
vote
Accepted
Is it scientifically sound to pool repeated measurements?
Your intuition is largely correct here.
Bryan Krause's comments focus on where your answer is wrong.
Some of his statements are true, others are speculative.
His answer, combined with your intuition, ...
- 56
1
vote
Why do fruits have to ripen?
Some of the main reasons for delayed fruit ripening are to protect immature seeds, to save energy, and incompatibility between fruit and flower morphologies.
Fruits that are sweet have generally ...
- 401
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