Assertion : The neural organisation is very simple in lower invertebrates.
Reason : The vertebrates have a more developed neural system.

Read the following statements :- (a) Nervous system provides an organised network of point to point connection. (b) The endocrine system provides chemical integration through hormone. (c) The neural organisation is very complex in lower invertebrates. (d) Neuron can detect & receive stimuli but can't transmit. How many of above statements are false.

Which of the following is not correctly correlate with neural system? i. The neural system of all animals is composed of highly specialised cells called neurous which can detect receive and transmit different kinds of stimuli ii. The neural organisation is very simple is lower invertebrates iii. Neural system of Hydra is composed of a network of neurons. iv. The neural system is better organised in insects, where a brain is present along with a number of ganglia and neural tissues V. The vertebrates have a more developed neural system . vi. Neural system of earthworm is composed of a network of neurons

Lower vertebrate in which neural organisation is very simple & composed of netwrk of neurons is

Lower vertebrate in which neural organisation is very simple & composed of netwrk of neurons is

Assertion : Amphioxus has a simple organization compared to vertebrates. Reason : Many important craniate structure are lacking in Amphioxus.