A seed lot is 98 per cent viable when it is stored…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A seed lot is per cent viable when it is stored. In a model, its viability halves every years. (This model is for practice, and it is not in the NEET syllabus.)
- What per cent of the seeds are viable after years? Give one decimal.
- What per cent are viable after years?
- What per cent are viable after years?
Need a reminder? The key ideaShow
Ex situ conservation keeps a species off site: zoos, botanical gardens, seed banks, cryopreserved gametes. The Red Data Book of the IUCN lists threatened species. The Red List categories from the highest risk are Extinct, Extinct in the Wild, Critically Endangered, Endangered, Vulnerable, Near Threatened and Least Concern. A model seed bank loses viability as (not in the NEET syllabus).
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. per cent. Half-life years.
Plan. .
Step 1. (a) per cent.
Step 2. (b) per cent.
Step 3. (c) per cent.
Answer: per cent; per cent; per cent.
Check. Each year takes the same share of what is left, so the first years lose more seeds than the next .
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