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Life Processes-Important Questions & Preparation Tips

Jun 24, 2013 18:46 IST

    In this article you will get the clue that from where and how the questions are being framed from the chapter Life Processes
    The experts of jagranjosh.com have full confidence that you will not miss any of the questions in the board exam as well as in competitive exams from this chapter if you will keep the following terms / question in your mind while studying

    • Movement is the most important criterion to decide whether something is alive or not. Justify
    • Define Life process and basic of life processes.
    • Reason for need of energy while sleeping
    • All living organisms need energy to perform. Explain?
    • What is nutrition and what are its nutrients?
    • Heterotrophic mode of nutrition and types of heterotrophic Nutrition
    • Name the organelles which contain chlorophyll
    • What is the role of guard cell?
    • The mechanism of opening and closing of stomata
    • What is photosynthesis? Explain its process with the help of diagram and chemical equation.
    • Raw materials of photosynthesis and list the events occur during photosynthesis
    • What are carbohydrates?
    • Conditions necessary for autotrophic nutrition
    • How do plants obtain carbon dioxide?
    • Role of guard cells
    • Stomata and its function with the help of diagram
    • Main events of photosynthesis
    • Importance of nitrogen
    • Where does photosynthesis takes place. Explain
    • Explain herbivores, carnivores and omnivores?
    •  Sun is the ultimate source of energy?
    • Different stages of feeding/nutrition in amoeba.
    • How paramecium eats food?
    • Importance of Peristaltic movement.
    • Name the gland which secretes HCl, digesting enzyme and mucus
    • Human digestive system. With example.
    • The initial starch in the plants has to be removed before we use them for photosynthesis, why?
    • Function of salivary glands
    • Reason for gastric juice being acidic in nature
    • Where does protein digestion begins?
    • Explain protein digestive enzyme pepsin is active only in the presence of an acid?
    • Role of mucus and HCl
    • Herbivores have longer small intestine than carnivores. Explain
    • Site for the complete digestion of carbohydrate, protein and fats
    • Write about the emulsification of fat and mention the role of bile salt
    • Name the enzymes present in the pancreatic juice
    • Intestinal juice secreted by small intestine or large intestine
    • The juice / enzyme responsible for the final conversion of protein in to amino acids , complex carbohydrate into glucose and fats into fatty acid and glycerol
    • Mention three functions of villi
    • Place where glucose is break down into pyruvate
    • Breakdown of glucose by various path ways
    • Name of the structure where exchange of gasses takes place
    • In animal where the body size is small, diffusion pressure is sufficient to distribute the oxygen through the body but when body size is large how this phenomenon get takes place
    • Which is more soluble in water, oxygen or CO2?
    • What is double circulation?
    • Values of systolic and diastolic pressure
    • Two functions of lymph
    • What is the unit of excretion?
    • Which muscle regulate the exit of food
    • Phagocytosis and its role
    • Dental plaque and how is it harmful
    • Cellular respiration and its process
    • Why respiration is called a complex process
    • All information regarding ATP
    • How can yeast live without oxygen?
    • What do you understand by lenticels?
    • Why is the rate of breathing much faster in aquatic animal than terrestrial animals?
    • Why is diffusion insufficient to meet the need of large multicellular organisms?
    • What will happen if carbon mono oxide combines with hemoglobin?
    • Reason for moist skin of earthworm
    • What do you understand by trachea? What role does it play?
    • Bronchioles and its function
    • Availability of large surface maximized the gases? Explain
    • Land plant dies if water get logged for a longer time period, explain
    • Process of air cleaning while passing through nasal passage
    • The two openings of the pharynx, one leading to trachea and the other leading to esophagus, lie very close to each other. Yet the swallow food does not enter into our trachea. Why?
    •  Explain- Xylem vessel runs like long a long drainpipe through the plant.
    • Structure of xylem vessel and tracheid
    • How is food transported in plants?
    • Structure of phloem
    • Difference between plasma, RBC and WBC. Functions of blood
    • Role of platelets in dengue fever
    • Diagram of heart and blood circulation in human body
    • Reason for heart beat being nonstop at all the time?
    • Systolic pressure and diastolic pressure
    • Vessels collect the blood from the body and distribute the blood to the body
    • Lymph is another medium of circulation in human body? Agree or not
    • Plant store waste products in their body too?
    • Bowman’s capsule and its function
    • Some people use dialysis machine while others not. What is the reason behind it

    Given here are the some example questions

    Q. Match the organisms given in column I with the process given in column II

    Column I        Column II
    Leech              Holozoic Nutrition
    Amoeba           Autotropic nutrition
    Mushroom       Parasitic nutrition
    Green plant     saprophytic nutrition

    Q. Match the terms in column I to those in column II

    Column I         Column II    
    Trypsin             Liver
    Amylase           Gastric glands
    Bile                   Pancreas
    Pepsin              Saliva

    Q. The correct order of steps occurring in nutrition in animal is:

    a. Ingestion--->absorption--->digestion--->assimilation--->egestion
    b. Ingestion--->digestion--->assimilation--->egestion
    c. Ingestion--->digestion--->absorption--->assimilation--->egestion
    d. Ingestion--->assimilation--->digestion--->absorption--->egestion

    Q. Which of the following is the correct sequesnce of parts as they occur in the human alimentary canal?

    a. Mouth--->stomach--->small intestine--->oesophagus--->large intestine
    b. Mouth--->oesophagus--->stomach--->large intestine--->small intestine
    c. Mouth--->stomach--->oesophagus--->small intestine--->large intestine
    d. Mouth--->oesophagus--->stomach--->small intestine--->large intestine

    Q. An organism A which cannot move from one place to another, makes a simple food B from the substances B and D available in the environment. This food is made in the presence of a green colored substance E present in the organs F in the presence of light energy in a process called G. some of the simple food B also gets converted into a complex food H for storage purpose. The food H gives a blue black color with dilute iodine solution

    a. What is (i) organism A (ii) food B and (iii) food H
    b. What are C and D
    c. Name (i) green colored substance E and (ii) organ F
    d. What is the process G?

    Q. Match the terms in column I with their uses in column II

    Column I                         column II
    Heart                               Pipe for transport in humans
    Arteries and veins           clotting of blood
    Xylem vessels                  pumping organs
    RBC                                  water transport in plants
    Platelets                           carrier of oxygen

    Q. Which of the following is the correct path taken by urine in our body

    a. Kidney--->ureter--->urethra--->bladder
    b. Kidney--->bladder--->urethra--->ureter
    c. Kidney--->ureter--->bladder--->urethra
    d. bladder --->Kidney--->ureter--->urethra

    Q. Which of the following is the only conducting tissue in non- flowering plants

    a. xylem vessels
    b. sieve tubes
    c. companion cells
    d. tracheids

    Q. What is the main excretory product in lizards?

    a. Ammonia
    b. Urea
    c. Uric acid
    d. None of these

    Q. Which of these initiates the heart beat?

    a. SA Node
    b. AV Node
    c. Bundle of His
    d. Purkinje fibers

    Q. If kidney fails to reabsorb water, the tissues would

    a. Remain unaffected
    b. Shrink to shrivel
    c. Absorb water from blood
    d. Take more oxygen from blood

    Q. Choose the forms in which most plants absorb nitrogen

    i. Proteins
    ii. Nitrates and Nitrites
    iii. Urea
    iv. Atmospheric nitrogen

    a. (i) and (ii)
    b. (ii) and (iii)
    c. (iii) and (iv)
    d. (i) and (iv)

    Q.Which of the following statement(s) is (are) correct ?

    v. Pyruvate can be converted into ethanol and carbon dioxide by yeast.
    vi. Fermentation takes place in aerobic bacteria.
    vii. Fermentation takes place in mitochondria.
    viii. Fermentation is a form of anaerobic respiration.

    a. (i) and (iii)
    b. (ii) and (iv)
    c. (i) and (iv)
    d. (ii) and (iii)

    Q. Lack of oxygen in muscles often leads to cramps among cricketers. This results due to

    a. conversion of pyruvate to ethanol.
    b. conversion of pyruvate to glucose
    c. non conversion of glucose to pyruvate
    d. conversion of pyruvate to lactic acid

    Q. Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by

    a. Labeo, Chameleon. Salamander
    b. Hippocampus, Exocoetus, Anabas
    c. Hyla, Rana, Draco
    d. Whale, Dolphin, Turtle

    Q. Choose the correct statement that describes arteries.

    a. They have thick elastic walls, blood flows under high pressure, collect blood from different organs and bring it back to the heart.
    b. They have thin walls with valves inside, blood flows under low pressure and carry blood away from the heart to various organs of the body.
    c. They have thick elastic walls, blood flows under low pressure, carry blood from the heart to various organs of the body.
    d. They have thick elastic walls without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.

    Q. Which of the following statement(s) is (are) true about respiration?

    i. During inhalation, ribs move inward and diaphragm is raised.
    ii. In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air.
    iii. Haemoglobin has greater affinity for carbon dioxide than oxygen.
    iv. Alveoli increase surface area for exchange of gases.

    a. (i) and (iv)
    b. (ii) and (iii)
    c. (i) and (iii)
    d. (ii) and (iv)
     
    Q.Which of the following statement(s) is (are) true about heart ?

    i. Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs.
    ii. Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.
    iii.  Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.
    iv. Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body

    a. (i)
    b. (ii)
    c. (ii) and (iv)
    d. (i) and (iii)

    Q.Which of the following groups of organisms, food material is broken down outside the body and absorbed ?

    a. Mushroom, green plants, Amoeba
    b. Yeast, mushroom, bread mould
    c. Paramoecium, Amoeba, Cuscuta
    d. Cuscuta, lice, tapeworm

    Q. A: Glomerulus acts as a dialysis bag, B : Bowman's capsule is found in heart.

    a. Both 'A' and 'B' are true statements.
    b. Both 'A' and 'B' are false statements.
    c. A' is true while 'B' is false.
    d. A' is false while 'B' is true.

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