Download App

PART - 2 - Unit V : CH - 15 Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 2 - Unit V : CH - 15 Body Fluids and Circulation3 Marks
Question
What is blood circulation system? Explain the difference between single circulation and double circulation.
✓

Answer

Blood Circulatory System : In humans, the system that transports $O _2$ and $CO _2$, nutrients, excretory substances and secretory substances from one part of the body to another is called blood circulatory system.
Differences between single circulation and double circulation
S.No.Single CirculationDouble Circulation
1. Blood passes through the heart once in a complete cycle. Blood passes through the heart twice.
2. The heart pumps deoxygenated blood. The heart pumps deoxygenated blood to the lungs and sends oxygenated blood to the body.
3. Blood is oxygenated by gills. Blood is oxygenated by the lungs.
4. This type of circulation is found in  This type of circulation is found in mammals, birds,Reptiles etc.
5. There are two chambers in the heart which are called atrium and ventricle respectively. There are four chambers in the heart which are called two atriums and two ventricles respectively.
 

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from PART - 2 - Unit V : CH - 15 Body Fluids and Circulation→PART - 2 - Unit V : CH - 15 Body Fluids and Circulation — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Complete the following equation of conversion of pyruvic acid int acetyl coenzyme-A. Where does this process occur inside the cell?
$\text{Pyruvic acid}+\text{Co}-\text{A}+\ ...\xrightarrow[\text{pyruvate dehydrogenate}]{\text{Mg}^{2+}}\text{Acetyl}$
$\text{Acetyl}\text{ Co}-\text{A}+\ ...+\ ...$
→
Why the members of class-Deuteromycetes are considered the fungi imperfect?
→
Differentiate between Rough Endoplasmic Reticulum (RER) and Smooth Endoplasmic Reticulum (SER).
→
Ria went to see the zoo in her town with her parents and saw many wild animals, their food habits, behaviour, etc. She saw that there was a wide variety of animal life in the zoo. But she was amazed to see that the board placed in front of lion cage and monkey place which tells that both were mammals. However, she thought that they were totally different in appearance.
  1. Why lions and monkeys are considered to be mammals?
  2. Explain the scientific reason to maintain a zoological park.
  3. Is there any similar place to see a variety of plants? If any, then name some.
  4. What values are shown by Ria?
→
  1. Define vernalisation.
  2. What are short-day plants?
  3. Name the plant growth regulator, which is snythesised by ripening fruits.
→
Define differentiation? Also give details about how can you distinguish between dedifferentiation and redifferentiation?
→
Write short notes on the function of the following hormone :
Thyroid hormone
→
(i) In aerobic respiration the respiratory coefficient is infinite. Please explain.
(ii) Define the following: (a) Floating respiration (b) Protoplasmic respiration (c) External respiration (d) Internal respiration.
→
Give the location of hepatic caecae in a cockroach. What is their function?
→
Plants require water for their survival. But when watered excessively, plants die. Discuss.
→