Multiple Choice QuestionsWhen the pollen tube enters through the micropyle, it is termed as
chalazogamy
mesogamy
porogamy
none of these
Which of the following cytoplasmic granules contain histamine
Basophils
Acidophils
Eosinophils
Neutrophils
Refractory period of a muscle fibre in mammals is
0.8001 sec
0.002 sec
0.004 sec
0.005 sec
B.
0.002 sec
After an action potential initiates, the cardiac cell is unable to initiate another action potential for some duration of time (which is slightly shorter than the "true" action potential duration). This period of time is referred to as the refractory period, which is 250ms in duration and helps to protect the heart.
Dispersal of fruits in Opium (poppy) occur through shaking by wind by
explosive mechanism
parachute mechanism
censer mechanism
jacular mechanism
Squeezing of leucocytes out from the endothelium of capillaries to fight foreign agents. is known as
haemolysis
diapaedesis
phagocytosis
rouleaux
Which organ is considered as "Graveyard of RBC" where most of them are destroyed by macrophages
Red bone marrow
Spleen
Kidney
Intestine
When one organism is benefited without affecting the other, it is called
parasitism
commensalism
saprophytis
symbiosis
A branch of science in which. forest crop can be grown in desired pattern is
Histology
Horticulture
Pisiculture
siliviculture
Which of the following factor is biotic
Photoperiod
CO2 content to the soil
Texture and porosity of soil
Rainfall
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