physiology of plants, humans and animals - Category wise Question and Answer Practice Test with Solutions
physiology of plants, humans and animals PRACTICE TEST [6 - EXERCISES]
set 1
set 2
set 3
set 4
set 5
set 6
Question : 11
Two pigment system theory of photosynthesis was proposed by or Concept of evidence for existence of two photosystems in photosynthesis was given by
a) Blackman
b) Emerson
c) Hill
d) Arnon
Answer »Answer: (b)
The discovery of the Emerson effect stated that one group of pigments absorbs light of both shorter and longer wavelengths (more than 680 nm) and another group of pigments absorbs light on only shorter wavelengths (less than 680 nm).
These two groups of pigments are known as pigment systems or photosystems.
Question : 12
Study the following statements :
- Control room of the cell is Nucleus
- Nucleus was discovered by Robert Brown.
- Nuclear envelope is absent in bacteria.
a) 1 and 2
b) 1 only
c) 2 only
d) 1, 2 and 3
Answer »Answer: (d)
The nucleus is the control room of the cell as it contains the genome which gets expressed to give the phenotype.
The nucleus of the cell was discovered by Robert Brown in 1833. Bacteria are prokaryotes, they lack the nuclear envelope and their genetic material lies in the cell cytoplasm.
Question : 14
Match Column-I with Column-II and select the correct answer using the code given below the lists.
Column-I | Column-II |
A. Isotonic | I. External solution is more concentrated |
B. Hypotonic | II. Shrinkage of protoplasm |
C. Hypertonic | III. Solution is more dilute than the cytoplasm |
D. Plasmolysis | IV. Two solutions have the same osmolarity |
a) A – IV; B – III; C – I; D – II
b) A – II; B – I; C – IV; D – III
c) A – III; B – I; C – IV; D – II
d) A – II; B – III; C – IV; D – I
Answer »Answer: (a)
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set 5 Online Quiz
Click to Start..general science mcq CATEGORIES
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» Measurement And SI Units
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» Measuring Devices And Scales
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» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
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» Force Of Gravity, Solids And Fluids
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» Motion Under Gravity
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» Physical Properties Of Materials
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» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
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» Electric Current And Magnetism
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» Nuclear Physics And Conductivity
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» Modern And Space Physics, Sources Of Energy
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» General Concepts Of Chemistry
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» Nature Of Matter And Composition
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» Atomic Structure Molecules And Nuclear Chemistry
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» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
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» Metals, Non Metals, Minerals, Ores, Properties, Uses
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» Alloys, Carbon & Its Various Forms, Hydrogen & Compounds, Sulphur, Nitrogen, Halogen & Inert Gases
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» Acids, Bases, Salts And Metals
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» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
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» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
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» Inorganic Chemistry
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» Organic Chemistry
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» Environmental Chemistry
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» Some Important Man Made Materials
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» Sub Divisions Of Biology
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» Genetics, Evolution Of Life & Ecological Biodiversity
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» Taxonomy
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» Heredity
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» Biofertilizer
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» Biological Classification Cell Tissues And Division
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» Human Anatomy
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» Blood Transport System
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» Digestion And Excretion
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» Photosynthesis
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» Vitamins, Nutrition, Health, Disease And Treatment
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» Endocrine Glands, Hormones
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» Physiology Of Plants, Humans And Animals
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» Reproduction
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» Genetic Engineering And Bio Technology
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