Which of the following measures can be taken to prevent diseases spread by mosquitoes?

Select the correct option to fill up the blanks.
$(i)$ Diseases which are easily transmitted from one person to another,are called $.....$ diseases.
$(ii)$ In human body,parasite of malaria initially multiplies within the $........$ and then attack the $......$
$(iii) ......$ is the yellowish fluid secreted by mother during the initial days of lactation.
$(iv) ......$ and $.......$ are the primary lymphoid organs.

What causes Alzheimer's disease in humans?

In vertebrates,a small protein is produced by cells in response to viral infection,which inhibits further viral replication. Identify this protein.

Which of the following substances is produced and released into the environment by an insect to influence the behavior of other members of the same species?

Which type of diseases are restricted to the individual and do not spread to other individuals?