Q29 of 56 Page 1

Given below is the list of vegetables available in the market. Select from these the two vegetables having homologous structures:

Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady's finger)

Homologous organs are defined as the organs which have same structure but different functions. Raddish and carrot are a pair of homologous organs as they are modified roots.

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He then dissolves in each test tube an equal amount of one salt in one test tube, namely sodium sulphate in P, potassium sulphate in Q calcium sulphate in R and magnesium sulphate in S. After that he adds an equal amount of soap solution in each test tube. On shaking each of these test tubes well, he observes a good amount of lather (foam) in the test tubes marked

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A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:

I. Tegmen II. Testa


III. Cotyledon IV. Radicle V. Plumule


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A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?

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A student used a device (X) to obtain/focus X the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).