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Science M.C.Q

PART - 2 CH - 5 Life processes · Gujarat Board (GSEB) STD 10 (GSEB - English Medium). 36 questions.

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36 questions · timed · auto-graded

MCQ 11 Mark
The lungs in human beings are a part of the system for
  • A
    Nutrition
  • B
    Transportation
  • C
    Excretion
  • ✓
    Respiration
Answer
Correct option: D.
Respiration
D
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MCQ 21 Mark
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in ______.
  • A
    cytoplasm
  • ✓
    mitochondria
  • C
    chloroplast
  • D
    nucleus
Answer
Correct option: B.
mitochondria
B
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MCQ 31 Mark
The autotrophic mode of nutrition requires ______.
  • A
    carbon dioxide and water
  • B
    chlorophyll
  • C
    sunlight
  • ✓
    all of the given
Answer
Correct option: D.
all of the given
D
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MCQ 41 Mark
The xylem in plants are responsible for ______.
  • ✓
    transport of water
  • B
    transport of food
  • C
    transport of amino acids
  • D
    transport of oxygen
Answer
Correct option: A.
transport of water
A
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MCQ 51 Mark
The kidneys in human beings are a part of the system of _______.
  • A
    nutrition
  • B
    respiration
  • ✓
    excretion
  • D
    transportation
Answer
Correct option: C.
excretion
C
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MCQ 61 Mark
Choose the correct option to complete the following reaction :
$6 CO _2+12 H _2 O \xrightarrow[\text { Sunlight }]{\text { Chlorophyll }} \ldots \ldots . .+6 O _2+6 H _2 O$
  • A
    $C _2 H _5 OH$
  • ✓
    $C _6 H _{12} O _6$
  • C
    $CH_4$
  • D
    $CH_3COOH$
Answer
Correct option: B.
$C _6 H _{12} O _6$
B
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MCQ 81 Mark
Which animals tolerate some mixing of oxygenated and deoxygenated blood streams?
  • A
    Fishes
  • B
    Birds
  • C
    Mammals
  • ✓
    Amphibians
Answer
Correct option: D.
Amphibians
D
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MCQ 91 Mark
Statement A : ATP is the energy currency for cellular processes.
Reason R : Complete oxidation of pyruvate in presence of oxygen occurs in mitochondria.
Which is the correct option for Statement A and Reason R?
  • A
    Both A and R correct and R is explanation of A.
  • ✓
    Both A and R correct but R is not explanation of A.
  • C
    A is correct, R is incorrect.
  • D
    A is incorrect, R is correct.
Answer
Correct option: B.
Both A and R correct but R is not explanation of A.
B
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MCQ 101 Mark
Statement A : The rate of breathing is much faster in fishes.
Reason R : The blood goes only once through the heart in the fish during one cycle of passage through the body.
Which is the correct option for Statement A and Reason R?
  • A
    Both A and R correct and R is explanation of A.
  • ✓
    Both A and R correct but R is not explanation of A.
  • C
    A is correct, R is incorrect.
  • D
    A is incorrect, R is correct.
Answer
Correct option: B.
Both A and R correct but R is not explanation of A.
B
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MCQ 111 Mark
In which of following process, ATP is used?
  • A
    Translocation of food
  • B
    To maintain body temperature in human
  • C
    Respiration
  • D
    Simple diffusion in human
Answer
A and B
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MCQ 121 Mark
Which substance does not get reabsorbed in nephron during urine formation?
  • A
    Glucose
  • B
    Urea
  • C
    Amino acid
  • D
    Uric acid
Answer
B and D
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MCQ 131 Mark
Which is the circulatory pathway of blood in the human heart?
  • A
    Right auricle $\rightarrow$ Left auricle $\rightarrow$ Lungs $\rightarrow$ Right ventricle $\rightarrow$ Left ventricle $\rightarrow$ Different organs
  • ✓
    Right auricle $\rightarrow$ Right ventricle $\rightarrow$ Lungs $\rightarrow$ Left auricle $\rightarrow$ Left ventricle $\rightarrow$ Different organs
  • C
    Right auricle $\rightarrow$ Right ventricle $\rightarrow$ Different organs $\rightarrow$ Left auricle $\rightarrow$ Left ventricle $\rightarrow$ Lungs
  • D
    Right auricle $\rightarrow$ Left auricle $\rightarrow$ Different organs $\rightarrow$ Right ventricle $\rightarrow$ Left ventricle $\rightarrow$ Lungs
Answer
Correct option: B.
Right auricle $\rightarrow$ Right ventricle $\rightarrow$ Lungs $\rightarrow$ Left auricle $\rightarrow$ Left ventricle $\rightarrow$ Different organs
B
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MCQ 141 Mark
Resin and gum are the __________ substances of plants.
  • ✓
    excretory
  • B
    nutritive
  • C
    constitutional
  • D
    reserve
Answer
Correct option: A.
excretory
A
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MCQ 151 Mark
Which one is the false statement for arteries?
  • A
    Arteries carry blood from the heart towards other organs.
  • B
    In arteries the blood flows under high pressure.
  • ✓
    All arteries carry oxygenated blood.
  • D
    The arterial walls are thick and elastic.
Answer
Correct option: C.
All arteries carry oxygenated blood.
C
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MCQ 161 Mark
Which process is important for osmoregulation?
  • A
    Nutrition
  • B
    Circulation
  • C
    Breathing
  • ✓
    Excretion
Answer
Correct option: D.
Excretion
D
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MCQ 171 Mark
Select the correct pair :
  • A
    Stomata - transpiration
  • B
    Translocation - glucose
  • C
    Villi - egestion of feaces
  • D
    Trachea - cartilaginous rings
Answer
A and D
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MCQ 181 Mark
Which of the following alternative shows the correct path of oxygenated blood flow in human beings?
  • ✓
    Lungs $\rightarrow$ Pulmonary veins $\rightarrow$ Left auricle $\rightarrow$ Left ventricle $\rightarrow$ aVarious organs of the body
  • B
    Lungs $\rightarrow$ Pulmonary artery $\rightarrow$ Left auricle $\rightarrow$ Left ventricle $\rightarrow$ Various organs of the body
  • C
    Lungs $\rightarrow$ Pulmonary artery $\rightarrow$ Right auricle $\rightarrow$ Right ventricle $\rightarrow$ Various organs of the body
  • D
    Various organs of the body $\rightarrow$ Right auricle $\rightarrow$ Right ventricle $\rightarrow$ Pulmonary artery $\rightarrow$ Lungs
Answer
Correct option: A.
Lungs $\rightarrow$ Pulmonary veins $\rightarrow$ Left auricle $\rightarrow$ Left ventricle $\rightarrow$ aVarious organs of the body
A
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MCQ 191 Mark
Which is the main force for the conduction of water through the xylem in plants?
  • A
    Absorption of water through roots
  • B
    Absorption of ions through roots
  • C
    Sufficient availability of water from the soil
  • ✓
    Suction due to transpiration
Answer
Correct option: D.
Suction due to transpiration
D
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MCQ 201 Mark
What happens in the process of photosynthesis?
  • A
    Transformation of solar energy into functional energy
  • ✓
    Transformation of solar energy into chemical energy
  • C
    Transformation of chemical energy into functional energy
  • D
    Transformation of functional energy into chemical energy
Answer
Correct option: B.
Transformation of solar energy into chemical energy
B
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MCQ 211 Mark
Which of the following brings oxygenated blood into left atrium in heart?
  • ✓
    Pulmonary vein
  • B
    Pulmonary artery
  • C
    Vena cava
  • D
    Aorta
Answer
Correct option: A.
Pulmonary vein
A
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MCQ 221 Mark
As compared to blood, the lymph contains _________.
  • A
    fewer RBCs
  • B
    less amount of water
  • C
    less amount of metabolic waste
  • ✓
    less amount of proteins
Answer
Correct option: D.
less amount of proteins
D
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MCQ 231 Mark
From which part of the human heart only oxygenated blood always flows?
  • A
    Both atria
  • B
    Both ventricles
  • ✓
    Left atrium and left ventricle
  • D
    Right atrium and right ventricle
Answer
Correct option: C.
Left atrium and left ventricle
C
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MCQ 241 Mark
At which part the actual process of filtration of blood takes place in kidney?
  • ✓
    Bowman's capsule
  • B
    Collecting duct
  • C
    Tubular part of nephron
  • D
    Capillaries of nephron
Answer
Correct option: A.
Bowman's capsule
A
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MCQ 261 Mark
In plants, photosynthetic products are transported through _________.
  • A
    vessel and sieve tube
  • B
    tracheid and vessel
  • ✓
    sieve tube and companion cell
  • D
    sieve tube and tracheid
Answer
Correct option: C.
sieve tube and companion cell
C
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MCQ 271 Mark
The enzyme acting in acidic medium is __________.
  • A
    amylase
  • ✓
    pepsin
  • C
    trypsin
  • D
    both B and C
Answer
Correct option: B.
pepsin
B
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MCQ 281 Mark
Which organ stores bile?
  • A
    Liver
  • B
    Pancreas
  • C
    Small intestine
  • ✓
    Gall bladder
Answer
Correct option: D.
Gall bladder
D
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MCQ 291 Mark
Which cells surround the pore of the stomata?
  • A
    Epidermal cells
  • B
    Companion cells
  • C
    Sieve cells
  • ✓
    Guard cells
Answer
Correct option: D.
Guard cells
D
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MCQ 301 Mark
What is the ultimate purpose of digestion?
  • A
    Transportation
  • ✓
    Absorption
  • C
    Respiration
  • D
    Assimilation
Answer
Correct option: B.
Absorption
B
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MCQ 311 Mark
What is the product from glucose in the first phase of respiration?
  • A
    Ethanol
  • B
    Lactic acid
  • ✓
    Pyruvic acid
  • D
    CO2
Answer
Correct option: C.
Pyruvic acid
C
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MCQ 321 Mark
Which is the exact site for gaseous exchange in human beings?
  • A
    Brochus
  • ✓
    Alveoli
  • C
    Villi
  • D
    Skin
Answer
Correct option: B.
Alveoli
B
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MCQ 331 Mark
Which one of the following organisms can live without oxygen or air?
  • A
    Amoeba
  • B
    Leech
  • C
    Green plant
  • ✓
    Yeast
Answer
Correct option: D.
Yeast
D
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MCQ 351 Mark
Where does the digestion of protein start in human being?
  • A
    Mouth
  • ✓
    Stomach
  • C
    Small intestine
  • D
    Colon
Answer
Correct option: B.
Stomach
B
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MCQ 361 Mark
Which of the following organism breaks down food material outside of body?
  • ✓
    Mushroom
  • B
    Cuscuta
  • C
    Leech
  • D
    Lice
Answer
Correct option: A.
Mushroom
A
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