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प्रश्न
Name the following :-
The cell organelle where photosynthesis occurs
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उत्तर
Chloroplasts are plant cell organelles that use the photosynthetic process to transform light energy into relatively stable chemical energy.
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संबंधित प्रश्न
Describe the function of the heart.
Give technical terms for The protective covering of the heart
Name the following:
The blood vessel which supplies blood to the liver.
Give appropriate biological or technical terms for the following :
The complex consisting of a DNA strand and a core of histones
What is the liquid part of the blood called? What is the function of platelets in the blood?
MULTIPLE CHOICE TYPE:
(Select the most appropriate option)
The valve present between the right atrium and the right ventricle is the
(a) tricuspid valve
(b) bicuspid valve
(c) semi-lunar valve
(d) mitral valve
Name the following:
The smallest common blood vessels formed by the union of capillaries.
Name the following:
The fluid found between the membranes of the heart.
Given below is a certain structure, write its chief functional activity.
Lymphocytes - ______.
Differentiate between members of the following pairs with reference to the aspect asked within bracket:
Artery and vein (direction of blood flow)
How do you account for the following difference?
The walls of the right ventricle are thicker than those of the right auricle.
Given diagram shows a simple diagram of the circulation of blood in a mamma showing the
main blood vessels, the heart, lungs and body tissues. The blood vessel, labelled 6, contains
deoxygenated blood and the valve leading to it has three semi-lunar pockets.
(a) Name the blood vessels and organs marked by numbers 1 to 8.
(b) What is meant by the term ‘double circulation’ of blood in mammals?
(c) what is diastole?
[There is an “error” in the diagram. According to the usual practice the pulmonary (lung)
circulation is shown upward and the systemic downward, but here it is reversed].
Choose the correct answer:
English physician who discovered blood circulation was ___________
Put a tick mark (✓) against the correct alternative in the following statement.
Pulmonary vein carries
Find the odd one out, giving reason.
The stomach is like a ______.
Respiration takes place because of its up and down movement.
Circulation is carried out by ______ in higher animals.
A resting person usually has a pulse rate between 72 to 80 beats per minute.
Given diagram is a schematic representation of the circulatory system in humans. Study the same and answer the questions that follow:
 |
- Label the parts 1 and 4 indicated in the diagram.
- Which of the above mentioned number is the thickest artery? Also write its name.
- Mention the number and chamber of the heart which has the thickest muscular wall.
- Which of the above numbers/structures has the maximum number of blood capillaries?
- Draw neat and labelled diagrams of the transverse section of vena cava and the part numbered as 3. Make sure to show the structural differences between these two in the diagram.
