Vinaya while playing in garden observed a pond with a green coloured covering which was floating on the surface of water? Next day she asked her teacher about the same. What her teacher must have told her?

Answer the following : During a field visit an Andaman, Rahul observed that some volunteers were not allowing tourist to collect shells from the beaches. When he asked his teacher, she replied that it is an attempt to protect the ecosystem and explained the importance of seashells. What might have been her explanation?

Veena observes that during winter setting of milk into curd takes more time while during summer, the same process happens faster. She asks about this difference in time taken to her elder sister. She also asks her sister about why certain reactions occur rapidly while others occur slowly. Her sister explains her about the various factors that affect the rate of chemical reactions. Based on the above scenario, answer the following questions. The reaction of aluminum metal with dilute hydrochloric acid takes place faster as compared to zinc metal. What could be the reason for this difference?

Veena observes that during winter setting of milk into curd takes more time while during summer, the same process happens faster. She asks about this difference in time taken to her elder sister. She also asks her sister about why certain reactions occur rapidly while others occur slowly. Her sister explains her about the various factors that affect the rate of chemical reactions. Based on the above scenario, answer the following questions. Why do you think setting of curd occur at different rates during different seasons?

Ragini, a 50 year old office goer, suffered hair line cracks in her right & left foot in short intervals of time. She was worried about mirror jerks leading to hair line cracks in bones. Doctor explained to her why it must be happening and prescribed medicines. What must be cause of Ragini's problem? Why has it occured? What precaustions she should have taken earlier? Why care she should take in future?

Riya found peculiar plant on her visit to Himachal Pradesh. What are the ways she can show it to her biology teacher and get information about it?

Kirti studied about nervous system in her science lecture. The next day teacher announced that she will conduct a viva and provided a questionnaire for the same. Given below is the questionnaire. what according to you are the answers? Write the location of the given structures: Broca's area

Kirti studied about nervous system in her science lecture. The next day teacher announced that she will conduct a viva and provided a questionnaire for the same. Given below is the questionnaire. what according to you are the answers? Write the location of the given structures: Corpus callosum.

Kirti studied about nervous system in her science lecture. The next day teacher announced that she will conduct a viva and provided a questionnaire for the same. Given below is the questionnaire. what according to you are the answers? Write the location of the given structures: Olfactory lobes.

Kirti studied about nervous system in her science lecture. The next day teacher announced that she will conduct a viva and provided a questionnaire for the same. Given below is the questionnaire. what according to you are the answers? Write the location of the given structures: thalamus

Kirti studied about nervous system in her science lecture. The next day teacher announced that she will conduct a viva and provided a questionnaire for the same. Given below is the questionnaire. what according to you are the answers? Write the location of the given structures: Corpora quadrigemina.