There has been an increase in the number | Class 11 Biology Chapter Animal Kingdom, Animal Kingdom NCERT Solutions

Question:

There has been an increase in the number of chambers in heart during evolution of vertebrates. Give the names of the class of vertebrates having two, three or four-chambered heart.

Answer:

Two chambered heart: Chondricthyes and Osteicthyes. They contain one auricle and one ventricle; sinus venosus and conus arteriosus are present.

Three chambered heart: Amphibia and Reptilia. They contain two auricles and one ventricle.

Four chambered heart: Aves and Mammalia. They contain two auricles and two ventricles.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

Next Question >

Popular questions of class 11 Biology

Q: Describe briefly the four major groups of Protozoa.

Q: Why are living organisms classified?

Q: State two economically important uses of: (a) Heterotrophic bacteria (b) Archaebacteria

Q: What is the difference between direct and indirect development?

Define a taxon. Give some examples of taxa at different hierarchical levels.

Q: Describe the important properties of enzymes.

What are the steps involved in formation of a root nodule?

Q: Illustrate the taxonomical hierarchy with suitable examples of a plant and an animal.

Q: How is a key helpful in the identification and classification of an organism?

Q: What is stomatal apparatus? Explain the structure of stomata with a labelled diagram.

Recently Viewed Questions of Class 11 Biology

List the hormones secreted by the following:
(a) Hypothalamus
(b) Pituitary
(c) Thyroid
(d) Parathyroid
(e) Adrenal
(f) Pancreas
(g) Testis
(h) Ovary
(i) Thymus
(j) Atrium
(k) Kidney
(l) G-I Tract

What are the various stages of meiotic prophase-I? Enumerate the chromosomal events during each stage?

Q: How is respiration regulated?

Q: Describe the important properties of enzymes.

Q: Define a cardiac cycle and the cardiac output.

Q: Look at leaves of the same plant on the shady side and compare it with the leaves on the sunny side. Or, compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?

Q: Define vital capacity. What is its significance?

Q: What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.

How does butter in your food gets digested and absorbed in the body?

Q: Attempt titrating an amino acid against a weak base and discover the number of dissociating ( ionizable ) functional groups in the amino acid.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Animal Kingdom.
Review previous year question papers to get an idea of how such questions may be framed in exams.
Practice answering questions within the time limit to improve your speed and accuracy.
Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Comments

Comment(s) on this Question

Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 3: There has been an increase in the number of chambers in heart during evolution of vertebrates. Give ....

There has been an increase in the number | Class 11 Biology Chapter Animal Kingdom, Animal Kingdom NCERT Solutions

< Previous Question

Next Question >

Popular questions of class 11 Biology

Recently Viewed Questions of Class 11 Biology

Study Tips for Answering NCERT Questions:

Comments

Comment(s) on this Question

Chapters for Class 11 Biology

Subjects for Class 11

Students Also Read

Important links

Quick Links

Resources

Support