The acidic semidigested food, coming out of the stomach is neutralized by

• pancreatic juice

• duodenal secretion

• large intestine secretion

• bile juice

12.

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