The most active phagocytic white blood cells are

Eosinophils and lymphocytes

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Neutrophils and monocytes

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Neutrophils and eosinophils

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Lymphocytes and macrophages

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Solution

The correct option is D Neutrophils and monocytes
Phagocytosis is a process wherein special types of cells called as phagocytes ingest and kill invading organisms. Although eosinophils also act as phagocytes, most active phagocytes are neutrophils and monocytes. These white blood cells can respond to a site of infection and phagocytize the invading bacteria
So, the correct answer is 'Neutrophils and monocytes'

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The most active of all the white blood cells in terms of mobility and phagocytosis are

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\begin{matrix} Component of blood & Function (a) X & (i) Prevents blood clotting in blood vessels (b) Y & (i i) Phagocytic in nature and engulf bacteria (c) Z & (i i i) Help in blood clotting \end{matrix}

Q. Match the following columns and select the correct option.

	Column-I		Column-II
(a)	Eosinophils	(i)	Phagocytic, agranular
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(d)	Monocytes	(iv)	Most abundant of total WBCs

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$\begin{matrix} Column I & Column II (i) Monocyte & (a) secretes serotonin, histamine, heparin (i i) Neutrophil & (b) forms about 20% of WBC is involved in immune response (i i i) B-Lymphocytes & (c) most abundant white blood cells, phagocytic (i v) Basophil & (d) life span of 3 days, produces antibodies \end{matrix}$

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