Which of the following is made up of a single bone in mammals?
Dentary
Hyoid
Upper jaw
All of these
If frog's brain is crushed, even then its leg moves on pinpointing. It is called
simple reflex
conditional reflex
neurotransmitter function
autonomic nerve condition
Gemmule formation in sponges are useful in
asexual reproduction
sexual reproduction
parthenogenesis
parthenocarpy
Which of the following is not a mental disorder?
Epilepsy
Neurosis
Psychosis
Plague
D.
Plague
Plague is also known as black death (due to dark blue areas of skin caused by haemorrhages). It is caused by a rod-shaped Gram negative bacterium, Yersinia pestis. This bacterium occurs in blood of rat and transmits from one rat to other by the rat flea, Xenopsylla cheopis.
Systemic heart refers to
entire heart in lower vertebrates
the two ventricles together in humans
the heart that contracts under stimulation from nervous system
left auricle and left ventricle in higher vertebrates