Q11 of 55 Page 247

Select the correct statement:

The tendril of a pea plant and phylloclade of Opuntia are both stem joints. They have similar basic structure and thus are homologous.

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9

In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is:

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A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?

 12

If the fossil of an organism is found in the deeper layers of earth, then we can predict that:

 13

Which of the following statement is not true with respect to variation?