Answer:
destruction of infected cells by cytotoxic T cells, or the destruction of intracellular pathogens by macrophage
Explanation:
A cell-mediated immune response is an immune response that does not involve antibodies. Cell-mediated immune responses involve the destruction of infected cells by cytotoxic T cells, or the destruction of pathogens by macrophages.
The answer cannot be either of the options involving B cells, as these are involved in the antibody response. The cytotoxic T cells are what actually destroy the infected cells (not helper T cells). Therefore, the answer is destruction of infected cells by cytotoxic T cells, or the destruction of intracellular pathogens by macrophage
Nutrients and sunlight affect a region's photosynthetic productivity.
What do you understand by photosynthetic productivity?
The rate during which energy is added to organisms as biomass (the quantity of material that makes up animals' bodies) in producers in an ecosystem is known as photosynthetic productivity, also referred to as primary productivity.
These organisms that make energy through photosynthetic processes rely on getting access to nutrients and sunlight. Photosynthetic organisms' output and efficiency can be gauged. This is known to as photosynthetic productivity (or primary productivity), and it is directly effected by the sunlight and nutrients that producers require.
Learn more about photosynthetic productivity here :-
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Alleles that are masked by others are called recessive alleles.
A difference between coelom and Pseudocoelom is that the gut of a pseudocoelom is surrounded by the endoderm, and the gut of a coelomate is surrounded by the ectoderm. So your answer is D.
