The leucocytes contain which of the following in large quantity?
Basophils
Neutrophils
Eosinophils
Monocytes
B.
Neutrophils
WBCs or White Blood Cells are also known as leucocytes. These are of two types: Agranulocytes (30%) and Granulocytes (70%).
Granulocytes are made in the bone marrow but by different cells. These can be further subdivided into-
(i) Neutrophils: They make up about 70% of total number of granular WBCs. They are actively phagocytic which engulf and digest disease causing bacteria.
(ii) Eosinophils
(iii) Basophils
Contractile vacuole in protozoan Amoeba is meant for
respiration
excretion
locomotion
osmoregulation
Which of the following is important for muscle contraction and nerve impulse transmission?
Ca2+ ions
Mg2+ ions
Both (a) and (b)
Fe2+ ions
Which one is component of Ornithine cycle?
Ornithine, citrulline and alanine
Ornithine, citrulline and arginine
Amino acid are not used
Ornithine, citrulline and fumaric acid
During inspiration, the diaphragm
expands
shows no change
contracts and flattens
relaxes to become dome- shaped
The function of pineal body is to
lighten the skin colours
control sexual behaviour
regulates the period of puberty
All of the above
