_________ give rise to macrophages, which destroy larger particles by phagocytosis.?
A. Nautrophils
B. Basophila
C. Monocyte
D. Lymphocyte
Category: Biology Mcqs
Midgut in cockroach is a short narrow tube called____________??
A. Hepatic caeca
B. Gizzard
C. Stomach
D. Rectum
Rigor mortis i.e, stiffening of body after death results from__________??
A. Accunulation of rigid proteins molecules in sarcoplam.
B. Unavailability of ATP, which is necessary to break the link between actin and myosin.
C. Decrease in body temperature after death.
D. Death of tissue due to unavailability of O2.
Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on___________??
A. Bacteria
B. Algae
C. Protenema
D. Cyanobacteria
95% of the cytoplasm of RBCs is____________??
A. Hemoglobin
B. Enzymes
C. Salts
D. Other proteins
Magnifying power of electron microscope as compared to eye is____________??
A. 500 X
B. 250000X
C. 500000X
D. 250X
The heart is enclosed in a membrane called________??
A. pleura
B. pericardium
C. peritoneum
D. epithelium
Mosses are included in sub-division of ___________??
A. Anthoceropsida
B. Hepaticopsida
C. Bryopsida
D. Lycopsida
Hydra has no specialized excretory system because:?
A. It does not produce waste material
B. Due to absence of mesoderm
C. The whole body cells are in contact with water
D. It has pseudocoelom.
The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by________??
A. Environmental biologist
B. Paleontologist
C. Marine biologist
D. Social biologist
