Q32 of 58 Page 1

Study the different conclusions drawn by students on the basis of their observations of fresh available specimens of plants and animals:

I. Potato and sweet potato are homologous organs.


II. Wings of insects and wings of bird are analogous organs.


III. Wings of insects and wings of bats are homologous organs.


IV. Thorns of citrus and tendrils of Cucurbita are homologous organs.


The correct conclusions are:

Wings of insects and birds are analogues organs as they have different structures but are performed for the same function i.e. flight. Similarly, thorns of citrus and tendrils of Cucurbita are homologues organs as they have same structure but are used for different fuctions.

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Slides of binary fission in amoeba and budding in yeast were given for observations to a group of students. Some of the observations reported by the group are given below:

I. Cytokinesis was observed in the yeast cell.


II. A chain of buds were observed due to reproduction in amoeba.


III. Single cell of amoeba and single cell of yeast were undergoing binary fission and budding respectively.


IV. Elongated nucleus was dividing to form two daughter nuclei in amoeba.


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