The acidic semidigested food, coming out of the stomach is neutralized by
pancreatic juice
duodenal secretion
large intestine secretion
bile juice
The oxygenated blood from the lungs is received by the
left auricle
left ventricle
right auricle
right ventricle
The oxygen evolved during photosynthesis comes from splitting of
water
carbon dioxide
oxygen
light
Which one of the following depicts the correct circuit of a reflex arc?
Effector - sensory neuron - spinal cord - motor neuron - receptor
Receptor - sensory neuron - spinal cord - motor neuron - effector
Receptor - sensory neuron - brain - motor neuron - effector
Sensory neuron - receptor - brain - effector - motor neuron
If one set of chromosomes for a given plant is represented as N; in case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have how many sets of chromosomes respectively?
N and 2 N
2 N and 2 N
N and 3 N
2 N and 3 N
AIDS is caused by a virus whose genetic material is:
single stranded circular DNA
double stranded DNA
single stranded RNA
double stranded RNA
Which one of the following is an organelle that is NOT found in prokaryotic cells?
Cell wall
Mitochondria
Plasma membrane
Ribosome
Which one of the following parts of body does NOT take part in the process of breathing?
Bronchi
Bowman's capsule
Diaphragm
Trachea
Which one of the following statements about classification of plants is correct?
Thallophytes have well differentiated body design
Funaria is a fungus
All Pteridophytes are Phanerogams
Vascular system is not found among Bryophytes
Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?
Phylum - Class - Order - Family - Genus
Phylum - Class - Family - Order - Genus
Family - Order - Class - Species - Genus
Class - Family - Order - Species - Genus