Study the following conclusions which were drawn by the students of a class on the basis of their observations of available/preserved specimens of plants and animals, and select the correct conclusions : I. Thorns of citrus and tendrils of cucurbita are analogous structures in plants. II. Potato and sweet potato are analogous organs in plants. III. Wings of insects and wings of bats are analogous organs in animals. IV. Wings of insects and wings of birds are homologous organs in animals. The correct conclusions are (A) I and II (B) II and III (C) III and IV (D) II and IV Explain briefly which is correct and why is correct wan which not why not.