What types of benefit and harm occur to human from animals of phylum-Arthopods?

Write whether the following statements are true or false with proper explanation : Planet Earth has highest number of animals from phylum Arthropoda.

What type of asexual reproduction occurs in Hydra?

What is the type of current obtained from a solar cell?

Answer the following question: What type of changes occur in a home having chronically ill old person? How will you help to maintain good atmosphere?

What are the types of cell division found in animals?

Answer the following question: What type of changes occur in the amount of energy during its transfer from plants to apex consumers?

Question based on paragraph A class of students was taken on an excursion by the school to the banks of a river. They were explained that energy can be transferred from phytoplanktons to humans. This pattem of energy in the ecosystem could be explained as a ‘pyramid of energy’. The pyramid of energy consists of phytoplanktons at the bottom, followed by three successive trophic levels consisting of zooplanktons, fishes and humans respectively. There is a gradual crease of energy and number of organisms from the base to the apex of the pyramid. The passage of energy is referred to as ‘one way’ transport. Based on the above passage, answer the question What would happen if the population of primary producers is drastically reduced?

What damage or harm do ectoparasitic and endoparasitic animals cause?

What are the types of casualities that are seen to occurs in different types of diasters?

What have we learnt from the Human Genome Project?