Chordates and Vertebrates

Chordata are the animals having the notochord, hollow dorsal nerve, pharyngeal gill, slit, and post-anal tail. Vertebrates are animals having the vertebral column to support body, brain to control body and closed type circulatory system. This note has information about chordate and vertebrates.

Summary

Chordata are the animals having the notochord, hollow dorsal nerve, pharyngeal gill, slit, and post-anal tail. Vertebrates are animals having the vertebral column to support body, brain to control body and closed type circulatory system. This note has information about chordate and vertebrates.

Things to Remember

  • Chordata are the animals having a notochord, hollow dorsal nerve, pharyngeal gill, slit, and post-anal tail.
  • Vertebrates are animals having a vertebral column to support body, brain to control body and closed type circulatory system.
  • Animals with separate male and female individuals are unisexual whereas male and female reproductive organs in the same individual are bisexual animals.
  • The process of fusion of male and female gamete is called fertilization.
  • Internal fertilization takes place inside female body whereas external fertilization takes place outside the body.

MCQs

No MCQs found.

Subjective Questions

Q1:

State the function of the office chief.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>The office chief is the in charge who sets the objectives, formulates plans and policies, manages resources, coordinates and controls the whole activities for achieving organizational objectives. Here are the functions of Office Chief:</p> <ol><li>Setting objectives of the organization.</li> <li>Preparing long term and short terms plans and policies of the organization.</li> <li>Dividing the work among the workers in the organization.</li> <li>Directing and coordinating the activities of the different staff and departments.</li> <li>Adopting good remuneration system for motivating workers.</li> <li>Maintaining sound accounting system in the organization.</li> <li>Reporting the performance and achievement of the organization to the board and public.</li> <li>Evaluating the performance of the staff and departments.</li> </ol>

Q2:

State the function of the sectional chief.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Functions of Sectional Chief:</p> <ol><li>Setting the departmental objectives in conformity with the organizational objectives.</li> <li>Preparing departmental plans and policies for achieving departmental objectives.</li> <li>Reporting the performance, problem and achievement of the department to the office chief.</li> <li>Dividing the work among the staff working in the department.</li> <li>Mobilizing human and other resources in an efficient manner for carrying out departmental activities smoothly.</li> </ol>

Q3:

Who is office chief?


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>The office chief is the in charge who sets the objectives, formulates plans and policies, manages resources, coordinates and controls the whole activities for achieving organizational objectives. He is regarded as the boss of the organization.</p>

Q4:

State any two functions of office chief.


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>Any two functions of office chief are as follows:</p> <ol><li>Setting objectives of the organization.</li> <li>Preparing long term and short terms plans and policies of the organization.</li> </ol>

Q5:

State any two functions of sectional chief.


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>Any two functions of sectional chief are as follows:</p> <ol><li>Setting the departmental objectives in conformity with the organizational objectives.</li> <li>Preparing departmental plans and policies for achieving departmental objectives.</li> </ol>

Q6:

State any two needs of office chief.


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>Any two needs of office chief are as follows:</p> <ol><li>To determine the objectives of the organization.</li> <li>To make plans, policies, programs, rules and regulations for achieving the set objectives.</li> </ol>

Videos

Office Personnel
Chordates and Vertebrates

Chordates and Vertebrates

Animal Kingdom

Chordata:

  • They have a semi-flexible rod that runs along the length of animals called notochord. Some chordates lose notochord while growing up but in any stage of life, they have to have the notochord.
  • Chordates have dorsal nerve chord that is hollow.
  • Chordates have Pharyngeal gill slits. It is an opening in between pharynx (throat) and outside. This feature also may not be present in adult but in any one stage of life.
  • All chordates have apost-anal tail which is an extension of notochord past anus. This feature also may not be present in adult but in any one stage of life.

Vertebrates:

  • They have avertebral column to support their body.
  • The brain is enclosed in a brain box or cranium.
  • Their heart is present at the ventral surface.
  • The circulatory system is closed type. Blood is mostly red in color due to the presence of hemoglobin.
  • The co-ordination of the body is under control of brain.

Terminology:

  1. Unisexual animals: Those animals in which male and female individuals are separate are called unisexual animals.
  2. Bisexual animals: Those animals, which contain male and female reproductive organs in the same individual, are called bisexual animals. They are also called the hermaphrodite.
  3. Fertilization: The process of fusion of male and female gamete is called fertilization. There are two types of fertilization:
    • Internal fertilization: The fertilization, the process of fusion of male and female gamete, which takes place inside the female body, is called internal fertilization. It occurs in higher vertebrates. It is safer and no watery medium is required.
    • External fertilization: The fertilization, the process of fusion of male and female gamete, which takes place out of the female body, is called external fertilization. It occurs in lower vertebrates. For this fertilization to occur water medium is required and it is not safe.

Lesson

Classification Of Living Being

Subject

Science

Grade

Grade 10

Recent Notes

No recent notes.

Related Notes

No related notes.