Life Process 50 Most Important Questions
Life Processes 50 Most Important Questions prepared by expert Science teachers from latest edition of CBSE(NCERT) books only by Seminary Classes to score more marks in CBSE board examination.
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________ Short answer questions________?
1. What is life process?
Ans:- The process which are performed to maintain the existence of life is called life process.
2. What is nutrition?
Ans:- The process by which an organism takes food and utilizes it is called nutrition.
3. What are the five types of nutrients?
Ans:- the five types of nutrients are:
a) mineral
b) fat
c) vitamin
d) carbohydrates
e) protein
4. There are how many mode of nutrition?
Ans:-there are two modes of nutrition:
a) autotrophic nutrition
b) heterotrophic nutrition
5. What is autotrophic nutrition?
Ans:- Autotrophic nutrition is a mode of in which an organism prepare its own food with the help of simple inorganic materials. Example: Green plants
6. By what process Amoeba obtain it's food?
Ans:- Amoeba obtain it's food by the process of phagocytosis.
7. What is the mode of nutrition in fungi?
Ans:- saprophytic mode of nutrition is performed by fungi.
8. By which gland Bile juice is secreted?
Ans:- Bile juice are secreted by the liver
9. What is the name of the Inner lining of stomach that protects the stomach from harmful effects of HCL?
Ans:- Mucus protect the inner lining of stomach from harmful effects of HCL.
10. Name two inorganic substances which are used by autotrophs to make food?
Ans:- the two inorganic substances which are used by autotrophs to make food are: carbon-dioxide and water
11. Which type of energy is used by living organisms to perform vital life process?
Ans:- chemical energy is used by living organisms to perform vital life process.
12. What is the other name of food pipe?
Ans:- oesophagus
13. What is the name of the contraction and expansion movement of the walls of the food pipe?
Ans:- the contraction and expansion movement of the food pipe is called as peristaltic movement.
14. Which cell help the stomata of a leaf to close and open the stomata?
Ans:- the cell which control the opening and closing of stomata is known as guard cells.
15. Name the green pigment present in the leaves of the plant?
Ans:- The green pigment present in the leaves are called chlorophyll.
16. Which part of alimentary canal receives bile from the liver?
Ans:- small intestine receive bile from the liver.
17. The process of digestion of food occur in the small intestine?
Ans:- the complete digestion of food occur in the small intestine.
18. What is the length of small intestine in human adult?
Ans:- the length of small intestine in human adult is 6.5m
19. Name the organisms which can live without oxygen?
Ans:- the organisms which can live without oxygen is Yeast.
20. Which part of the root is involved in the exchange of respiratory gases?
Ans:- Root hair is involved in the exchange of respiratory gases.
21. Name the areas in woody stem through which respiratory gases exchange take place .
Ans:- the areas by which woody stem through gases are called lenticels.
22. Name a organisms which absorbs oxygen through its moist skin?
Ans:- the organisms which absorbs oxygen through its moist skin is Earthworm.
23. What is the other name of wind pipe?
Ans:- the other name of wind pipe is called trachea.
24. The trachea divided into two tubes at its lower end what is the name of these tubes?
Ans:- the name of the tubes are Bronchii
25. What is the name of the tiny air sac that present in the lungs that performs the major function in exchange of gas?
Ans:- alveolies are the tiny air sac that present in the lungs and perform the major function in the exchanging of gases.
26. During marathon we sometimes get painful contraction of legs muscles due to the accumulation of one of the following in leg muscles which acid is responsible for this?
Ans:- Lactic acid is responsible for this
27. Which tissue is responsible for the transport of water in plant?
Ans:-: xylem tissue is responsible for the transport of water in plants.
28. By what process food is transported throughout the plant body and by the use of which tissue?
Ans:- translocation is the process by food is transported throughout the plants body and the tissues that helps in the transport of food in plant is pholem tissues.
29. Which organ act as a pump in circulatory system ?
Ans:- Heart
30. Where is the dirty blood in our body filtered?
Ans:- nephron in kidney
31. Name two liquid which help in the transport of substance in the human body?
Ans:- the two liquid which help in the transport of substance in human body are blood and lymph.
32. What is the other name of main vein ?
Ans:- the other name of main vein is vena cava.
33. Name the two waste products of the human body which are produced in the body cells.
Ans:- carbon dioxide and urea.
34. What is the other name of high blood pressure?
Ans:- the other name of high blood pressure is hypertension.
35. The component of blood which makes chemical known as antibodies is.
Ans:- the component of blood which makes chemical known as antibodies is white blood cells or WBC.
36. If a patient is put on dialysis, he is must likely suffering from a severe aliment of the which system
Ans:- excretory system is damaged of this person.
37. A blood vessel which carries blood back to the heart is :
Ans:- A blood vessels which carries blood back to the heart is vein
38. By which part of the heart blood is pumped from the heart to the entire body?
Ans:- Blood is pumped by the heart to the entire body by the ventricles.
39. Which blood vessels doesn't carry any Carbon-dioxide?
Ans:- pulmonary veins does't carry any Carbon-dioxide.
40. Which veins bring clean blood from the lungs into the heart?
Ans:- pulmonary veins bring clean blood from the lungs into the heart.
41. What is aerobic respiration?
Ans:- Respiration in which oxygen is used in tha presence of oxygen is called aerobic respiration.
42. What is Bowman's capsule.
Ans:- Bowman's capsule is the head of nephron it is a cup shaped structure which has a clucture of capillaries called as glomerulus.
43. What is nephron?
Ans:- Nephron is the microscopic basic filtration unit of kidney.
44. What is excretion?
Ans:- excretion is the process of removing harmful metabolic waste such as urea , uric acid and salts from the body.
45. What is a lymph?
Ans:- lymph is a white vascular connective tissue.
46. By what absorption of fats from the small intestine take place?
Ans:- absorption of fats from the small intestine is done through lymphatic vessels.
47. Platelets are made where in the body?
Ans:- platelets are made in our bone marrow.
48. What is blood vessels?
Ans:- blood vessels are hollow tube through which the blood flows. These are of three types: a) Arteries b) veins c) capillaries
49. In double circulation ?
Ans:- in double circulation blood will move from the heart two times.
50. What makes red blood corpuscles red?
Ans:- Hemoglobin
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