Answer:
Innate immunity is a non-specific immune system which provides defence against any pathogenic microorganism in early stages. It includes physical barrier such as skin, chemical barriers such as saliva, tears, et cetera, phagocytic cells such as macrophages, et cetera.
Acquired immune system is the one which develops after exposure to pathogen or antigen. It is highly specific in nature. It includes B-lymphocytes and T-lymphocytes. It includes the production of antibodies.
Vaccines are used to develop acquired immunity in people. The process is termed as vaccination or immunisation. Heat-killed or weakened pathogen or antigen is inserted into a person after which a person develops antibodies and memory cells against that pathogen or disease. So, the immune system acts more vigorously against that pathogen in secondary infection.
Thus, a person becomes immunised.
Answer:
i. Maize seed is a monocot seed whereas bean seeds are dicot seed.
(ii) Maize seed only have a single leaf inside, most of the space inside the seed is reserved for endosperm but bean seed have two leaves, both of which store and provide food to the seedling in absence of endosperm.
(iii) Corn seeds (maize) germinates in three days but bean seed takes seven days to germinate.
Explanation:
Die is two, mono is one
Dry and arid parts of the world with little to no rain.
It is generally followed by cytokinesis which divides the cytoplasm and cell membrane
