Answer:
(d). B-cells.
Explanation:
Adaptive immunity can be described as immunity which develops in response to exposure to a pathogen (or foreign molecule). throughout the life. It is divided into two types, humoral immunity and cell-mediated immunity.
Humoral immunity is mediated by B cells that secrete antibodies against particular antigens. These antibodies recognize and neutralize the antigens and activate cell-mediated immunity, which is mediated by T cells.
Thus, the correct answer is option (d).
Answer:
Interspecific competition occurs between individuals of different species. Intraspecific competition occurs between individuals of the same species.
Explanation:
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Answer:
Its a form of adaptation for the frog. The bulging eyes of most frogs allow them to see in front, to the sides, and partially behind them.
Explanation:
