If a die is rolled, what is the probability of getting an even number? Explain your reasoning.
Explain the concept of variance and standard deviation. Calculate the standard deviation for the data set: 5, 8, 12, 15, 18.
Calculate the mean, median, and mode for the following data set: 12, 15, 12, 18, 20, 22, 15.
How do you construct a frequency distribution table for a given set of data? Provide an example.
Explain briefly the following terms with suitable examples:-
(i) protonema
(ii) antheridium
(iii) archegonium
(iv) diplontic
(v) sporophyll
(vi) isogamy
Mention the ploidy of the following: protonemal cell of a moss; primary
endosperm nucleus in dicot, leaf cell of a moss; prothallus cell of a ferm;
gemma cell in Marchantia; meristem cell of monocot, ovum of a liverwort,
and zygote of a fern.
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