What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?

If you are given a specimen, what are the steps that you would follow to classify it?

Paragraph based questions : Read the following paragraph and answer, the questions based on it. The presence or absence of organs is the first criterion for classification of plants. The presence or absence of separate conducting tissues for conduction of water and food is the next consideration for classification. Do the plants bear seeds? If they do then, whether the seeds are enclosed in a fruit or not is also an important criterion for classification. Finally, plants are grouped depending upon the number of cotyledons in the seeds. In 1883, Eichler, a botanist, classified the Kingdom Plantae into two sub-kingdoms. As a result, two sub-kingdoms, cryptogams and phanerogams were considered for plant classification. Which criteria are taken into account while classifying the lower groups of the plants?

What are the various public health measures, which you would suggest as safeguard against infectious disease?

What different criteria would you choose to classify people that you meet often?

What are the reasons that you can think of for the arthropodsa to constitute the largest group of the animal kingdom?

A student performed following two activities in school laboratory: Activity 1: Addition of zinc dust into copper sulphate solution taken in a test tube. Activity 2: Addition of an iron nail into copper sulphate solution taken in a test tube. He noted down his observations and concluded that chemical reaction occurs in both the cases based on the observed colour change of the resulting solution. Based on these activities, what can you conclude about the reactivity of elements zinc and iron as compared to that of copper?

Which technical difficulties did you face while using the computer? What did you do to overcome them?

Which technical difficulties did you face while using the computer? What did you do to overcome them?