Q4. Name the three features of Mendel’s work that NCERT says gave his results credibility.
Statistical analysis and mathematical logic applied, NCERT says, for the first time to problems in biology; a large sampling size; and confirmation of his inferences on successive generations of his test plants (NCERT page 54).
Q5. Give an Indian example NCERT uses of a breed produced by artificial selection and domestication.
Sahiwal cows in Punjab, bred from ancestral wild cows (NCERT pages 53–54).
Q6. A student lists the seven characters Mendel studied as stem height, flower colour, flower position, pod shape, pod colour, seed shape and leaf shape. Which one is wrong, and what should replace it?
Leaf shape is wrong; the seventh character is seed colour (yellow or green) (NCERT Table 4.1, page 55).