In most cases, adaptive immune responses rely on the initial activation of in secondary lymphoid tissue:

This question lacks options, options are: a. macrophages

b. T cells

c. B cells

d. dendritic cells

e. epithelium

The correct answer is c.  

Explanation:

In the secondary lymphoid organs is where foreign substances or antigens are presented and the specific immune response begins. They are the lymph nodes, spleen, and MALT. The main function of B cells is the recognition of foreign molecules to the body, called antigens, and the production of specific antibodies to neutralize them. After maturation, B cells are central cells in the adaptive immune response, they agglomerate in the lymph nodes, spleen and other lymphoid tissues, where they will come into contact with the antigens for which they are specific.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.