World's only instant tutoring platform
dropdown-logo
Become a tutorPartnershipsAbout usStudent loginTutor login
About us
Login
App StorePlay Store
Get 2 FREE Instant-Explanations on Filo with code FILOAPP
Describe the evolutionary change in the pattern of heart among
Biology
Biology

Class 11

NCERT

Publisher:
NCERT
Subject:
Biology
1

Chapter 1: The Living World

11 questions

arrow
2

Chapter 2: Biological Classification

12 questions

arrow
3

Chapter 3: Plant Kingdom

12 questions

arrow
4

Chapter 4: Animal Kingdom

15 questions

arrow
5

Chapter 5: Morphology of Flowering Plants

15 questions

arrow
6

Chapter 6: Anatomy of Flowering Plants

12 questions

arrow
7

Chapter 7: Structural Organization in Animals

14 questions

arrow
8

Chapter 8: Cell: The Unit of Life

14 questions

arrow
9

Chapter 9: Biomolecules

15 questions

arrow
10

Chapter 10: Cell Cycle and Cell Division

16 questions

arrow
11

Chapter 11: Transport in Plants

16 questions

arrow
12

Chapter 12: Mineral Nutrition

10 questions

arrow
13

Chapter 13: Photosysnthesis in Higher Plants

9 questions

arrow
14

Chapter 14: Respiration in Plants

12 questions

arrow
15

Chapter 15: Plant Growth and Development

11 questions

arrow
16

Chapter 16: Digestion and Absorption

15 questions

arrow
17

Chapter 17: Breathing and Exchange of Gases

14 questions

arrow
18

Chapter 18: Body Fluids and Circulation

14 questions

Q1
Write the differences between:
(a) Blood and Lymph
(b) Open and closed system of circulation
(c) Systole and diastole
(d) P- wave and T- wave
Q2
Describe the evolutionary change in the pattern of heart among the vertebrates.
Q3
Why do we call our heart myogenic?
View all question
19

Chapter 19: Excretory Products and their Elimination

12 questions

arrow
20

Chapter 20: Locomotion and Movement

10 questions

arrow
21

Chapter 21: Neural Control and Coordination

12 questions

arrow
22

Chapter 22: Chemical Coordination and Integration

9 questions

arrow
Question
Easy
Timing Icon

Solving time: 5 mins

Describe the evolutionary change in the pattern of heart among the vertebrates.

Views

Views: 5,838 students

Book

Book:

Biology (NCERT)

tutor 0tutor 1tutor 2
Found 5 tutors discussing this question
Evelyn Discussed
Describe the evolutionary change in the pattern of heart among the vertebrates.
6 mins ago
Discuss this question LIVE
6 mins ago

Text SolutionText solutionverified iconVerified

Heart is a hollow muscular organ present in all vertebrates which pump blood to whole of the body. Evolutionary change in the heart is observed on the basis of separation of oxygenated and deoxygenated blood for efficient oxygen transport to the body. 
Fish heart- It is made up of 2 chambers- one auricle and one ventricle. Since there is  no division of auricles and ventricles, deoxygenated blood passes through it which enters the gills for oxygenation. It has two additional chambers such as sinus venosus and conus arteriosus.
Solution Image

Amphibian heart- It has 3 chambers- 2 auricles and one ventricle. The auricles are divided by a septum while ventricle is undivided. Additional chambers such as sinus venosus and conus arteriosus are also present. The deoxygenated blood from whole body enters the right auricle while oxygenated blood enters the left auricle from the lungs and ultimately two types of blood get mixed up in ventricle. 

Solution Image

Reptilian heart- It is incompletely 4 chambered except in crocodiles, alligators and gharials. They have only one accessory chamber called sinus venosus. The reptilian heart also shows mixed blood circulation.

Solution Image

Avian and mammalian hearts- It is made up of four chambers- 2 auricles and two ventricles. These two pairs of chambers separate oxygenated and deoxygenated blood. The upper two chambers are called atria and the lower two chambers are called ventricles. The chambers are separated by a muscular wall that prevents the mixing of the blood rich in oxygen with the blood rich in carbon dioxide.
Solution Image
Was this solution helpful?
87
Share
Report
One destination for complete JEE/NEET preparation
One destination to cover all your homework and assignment needs
Learn Practice Revision Succeed
Instant 1:1 help, 24x7
Instant 1:1 help, 24x7
60, 000+ Expert tutors
60, 000+ Expert tutors
Textbook solutions
Textbook solutions
Big idea maths, McGraw-Hill Education etc
Big idea maths, McGraw-Hill Education etc
Essay review
Essay review
Get expert feedback on your essay
Get expert feedback on your essay
Schedule classes
Schedule classes
High dosage tutoring from Dedicated 3 experts
High dosage tutoring from Dedicated 3 experts
Trusted by 4 million+ students

Practice more questions from Biology (NCERT)

Q1
Write the differences between:
(a) Blood and Lymph
(b) Open and closed system of circulation
(c) Systole and diastole
(d) P- wave and T- wave
Q2
Describe the evolutionary change in the pattern of heart among the vertebrates.
Q3
Why do we call our heart myogenic?
View all

Practice questions from Biology (NCERT)

Question 1
Easy
Views

Views: 5,608

Sino-atrial node is called as the pacemaker of our heart. Why?
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology (NCERT)

View solution

Question 2
Easy
Views

Views: 7,329

What is the difference between lymph and blood?
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology (NCERT)

View 17 solutions

Question 3
Easy
Views

Views: 6,204

Why do we call our heart myogenic?
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology (NCERT)

View 2 solutions

Question 4
Easy
Views

Views: 5,917

What is meant by double circulation? What is its significance?
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology (NCERT)

View 3 solutions

filo Logo

Practice more questions from Body Fluids and Circulation

Question 1
Easy
Views

Views: 5,868

Write the differences between:
(a) Blood and Lymph
(b) Open and closed system of circulation
(c) Systole and diastole
(d) P- wave and T- wave
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Biology (NCERT)

View 2 solutions

Question 2
Easy
Views

Views: 5,932

Observe the given diagrametic representation of formed elements of blood and answer the following questions.

How does appears under the microscope?
Topic

Topic:

Body Fluids and Circulation

Book

Book:

CBSE New Pattern Biology Class 11 for 2021-22 Exam MCQs based book for Term 2

View solution

Question 3
Medium
Views

Views: 5,283

What happens when the pacemaker becomes nonfunctional?
  1. Only the auricles will contract rhythmically.
  2. The cardiac muscles do not contract in a coordinated manner rhythmically.
  3. Only ventricles will contract rhythmically.
  4. Auricles and ventricles contract simultaneously.
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Xtract Objective Biology for NEET (Disha)

View 2 solutions

Question 4
Easy
Views

Views: 5,591

In which of the following options the types of heart is correctly matched to their respective group of animals?
  1. Two chambered heart- Fishes and amphibians
  2. Three chambered heart- Amphibians and birds
  3. Four chambered heart- Birds and mammals
  4. Three chambered heart- Reptiles and mammals
Topic

Topic:

Body Fluids and Circulation

Book

Book:

Xtract Objective Biology for NEET (Disha)

View solution

Practice questions on similar concepts asked by Filo students

Question 1
Views

Views: 5,834

The function of an axon is :-
  1. Transformation of nerve impulse
  2. Reception of stimuli from neurons
  3. Reception of external stimuli
  4. Conduction of nerve impulse
Topic

Topic:

Human Physiology

View solution

Question 2
Views

Views: 5,748

why RNA is always single stranded and DNA is double stranded
Topic

Topic:

Biology

View solution

Question 3
Views

Views: 5,972

Label the structures seen in a low magnification micrograph of the ovary. Cortex Corpus albicans Ovarian ligament Medulla Primordial follicle Corpus luteum Developing follicle Tunica albuginea Al Telser McGraw Hill Education
Topic

Topic:

Biology

View solution

Question 4
Views

Views: 5,469

3. Answer the following questions A. Distinguish between smooth and rough endoplasmic reticulum. B. Mitochondria are power house of cell. Give reason. C. What are types of plastids?
Topic

Topic:

Structural Organisation in Plants and Animals

View solution

View more
Doubt Icon Doubt Icon

Stuck on the question or explanation?

Connect with our Biology tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Related books for questions on Body Fluids and Circulation

next icon
next icon
Question Text
Describe the evolutionary change in the pattern of heart among the vertebrates.
TopicBody Fluids and Circulation
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes87