STD 12 - 4. principal of inheritance and variation — NEET STD 11 Science — Question

Basic principles of embryonic development were stated by

Delete odd one :

Lactiferous duct is present in

Which one of the following statements are correct ?
(i) The electrical potential difference across the plasma membrane at depolarized state is called the action potential, which is also termed as nerve impulse.
(ii) A synapse is formed by the membranes of a pre- synaptic neuron and a post-synaptic neuron, which may or may not be separated by a gap called synaptic cleft.
(iii) Impulse transmission across an electrical synapse is always faster than that across a chemical synapse.
(iv) Electrical synapses are commonly found in our system.
(v) The axon terminals contain vesicles filled with neurotransmitter.
(vi) Brain is covered by cranial meninges consisting of an inner layer dura mater, middle layer arachnoid and outer layer pia mater.
(vii) A deep cleft divides the cerebrum transversely into halves which are termed as left and right cerebral hemispheres.
(viii) The two cerebral hemispheres are connected by a tract of nerve fibres called corpus callosum.
(ix) The hypothalamus contains a number of centres which control body temperature, urge of eating and drinking.
(x) The region called as the association area are not responsible for complex function like intersensory associations, memory and communication.
(xi) A canal called the cerebral aqueduct passes through the midbrain.
(xii) The ventral portion of the midbrain consists mainly of four lobes called corpora quadrigemina.
Choose the correct option given below :-

In which one of the following the genus name, its two characters and phylum are not correctly matched ?

During ventricular diastole

If a character is always transmitted directly from a father to all his sons and from their sons to all their sons, then which chromosome carries the gene for the character