Question

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:; A. I and II; B. II and IV; C. I and III; D. III and IV(All India - 2013)

Answer 1

Explanation:

Pesticides are found in food grains such as wheat and rice, vegetables and fruits and even meat to contain varying amounts of pesticide residues. This is because pesticides being a poisonous chemical substance are sprayed in the fields of different crops to prevent the crops from any disease.