Home
Class 12
BIOLOGY
Lower vertebrate in which neural organis...

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

Text Solution

Verified by Experts

The correct Answer is:
Hydra
Promotional Banner

Similar Questions

Explore conceptually related problems

Read the following statements about the nervous system: I. The neural organisation in Hydra is composed of a network of neurons. II. A neuron is a macroscopic structure composed of three major parts III. Nissl's granules are present in dendrites and cell body. IV. The axons transmit nerve impulses towards the cell body. How many from the many from the above is/are correct ?

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

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.

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

Spinal cord I. is located in the neural canal of vertebral column. II. Is composed of central grey matter, in which cell bodies of neurons are present. III. Do not conduct the reflex actions of the body. IV. Composed of central white matter.

Read the following statement carefully and give the answer :- (A) The organism try to maintain the constancy of its internal environment this process is called homeostasis (B) A very few lower vertebrate and invertebrate species are also indeed capable of regulation (C ) An overwhelming majority (99%) of animals and nearly all plant cannot maintain a constant internal enviroment (D) Some species have evolved the ability to conferm but only over a limited range of environment conditions beyond which they simply regulate

A company manufacturing sewing machines set up in 1946 follows formal organisation structure. It is facing lot of problems such as delays in decision-making. As a result, it is not able to adapt to the chaning business environment. The work force is also not motivated. There is a problem of red tapism and employees turnover is very high. You advise the company with regard to change it should bring about in its organisation structure to overcome the problems faced by it. Give reasons in terms of benefits it will derive from the changes suggested by you. In which sector can the company diversify keeping in mind the declining market for the product the company is manufacturing.

Smitha runs an NGO under the same serve karma in Delhi. The organisation is engaged in offering waste paper recycling services to all kinds of institutions in Delhi. It also made paper stationery out of recycled papers at very competitive price. The website of serve karma provides a link, to career sites. Wherein people desirous of joining the NGO can use simple job search to find the right opportunity for themselves. The NGO also keeps a database of applications of jobseekers. so that they can be called whenever need arises. In the context of above case: identify the two sources of external recruitment being used by Serve karma by quoting the lines from para.