Absorption by Roots The Processes Involved Class 10 ICSE Biology MCQ Questions
Looking for Absorption by Roots The Processes Involved Class 10 ICSE Biology Chapter 4 MCQ Questions? If yes, You are the right page. Here we have provided ICSE class 10 biology chapter 4 multiple choice questions and answers. All MCQ are important.
Multiple Choice Questions
( I ) Choose the best answer
( 1 ) Which branch of biology is concerned with the functional mechanism of plants life ?
a ) Plant biology b ) Plant physiology
c ) Plant science d ) Horticulture
Answer : b ) Plant physiology
( 2 ) Roots plays an essential function in absorbing
a ) Clay and water from soil b ) Salt and water from soil
c ) Water and mineral nutrients from soil d ) Gas and mineral from soil
Answer : c ) Water and mineral nutrients from soil
( 3 ) Water is required within the plant body mainly for
a ) Photosynthesis b ) Transpiration
c ) Transportation and mechanical stiffness d ) All of the above
Answer : d ) All of the above
( 4 ) In order to maintain the stiffness of plant tissues, water is extremely essential as it supplies
a ) Flaccidity b ) Turgidity
c ) Plasmolysis d ) None of the above
Answer : b ) Turgidity
( 5 ) The most important feature(s)which enables the roots to absorb water from the soil is / are
a ) A huge surface area b ) Higher concentration
c ) Thin walls d ) All of the above
Answer : d ) All of the above
( 6 ) On which year , an aggregate root length of a four month – old rye plant was worked out ?
a ) 1930 b ) 1933
c ) 1937 d ) 1940
Answer : c ) 1937
( 7 ) Which botanist played a significant role in finding out the aggregate root length of a four month old rye plant ?
a ) H.J Dittmer b ) Gaspard Bauhin
c ) Carl Linnaeus d ) John Ray
Answer : a ) H.J Dittmer
( 8 ) In comparison to the surrounding water , the cell sap contained in the root hairs are of
a ) Lower concentration b ) Higher concentration
c ) Moderate concentration d ) None of the above
Answer : b ) Higher concentration
( 9 ) Root hairs primarily consists of two external layers . What are the two external layers?
a ) Cell cycle and cell division b ) Cell growth and cell cycle
c ) Cell wall and cell membrane d ) Cell proliferation and cell division
Answer :. c ) Cell wall and cell membrane
( 10 ) The primary structural surface of the cell wall is
a ) Thick and semi permeable b ) Thin and permeable
c ) Thick and permeable d ) Thin and semi permeable
Answer : b ) Thin and permeable
( 11 ) The basic structural layer of the cell membrane is
a ) Thin and permeable b ) Thick and semi permeable
c) Thin and semi permeable d ) Thick and permeable
Answer : c )Thin and semi permeable
( 12 ) The process in which the living or dead plant cells draws water through surface attraction is called
a ) Osmosis b ) Swelling
c ) Absorption d ) Imbibition
Answer : d ) Imbibition
( 13 ) Substances which are composed of proteins or cellulose are considered as
a ) Hydrophilic b ) Hydrophobic
c ) Hydroscopic d ) Oleophilic
Answer : a ) Hydrophilic
( 14 ) Molecular movement from the area of higher concentration to the area of lower concentration is known as
a ) Effusion b ) Convection
c ) Diffusion d ) Advection
Answer : c ) Diffusion
( 15 ) Which molecular substances are involved in the process of diffusion ?
a ) Solute and gas b ) Gas and liquid
b ) Liquid and solvent c ) Solute or solvent , gas and liquid
Answer : c ) Solute or solvent , gas and liquid
( 16 ) The movement of water molecules traveling through semi permeable membrane from the area of higher concentration to the area of lower concentration is called
a ) Osmosis b ) Dialysis
c ) Diffusion d ) Solution
Answer : a ) Osmosis
( 17 ) The swelling up of cells through the inward diffusion of water when the solution is not highly concentrated is known as
a ) Exosmosis b ) Osmosis
c ) Endosmosis d ) Plasmolysis
Answer : c ) Endosmosis
( 18 ) The outward diffusion of water which contributes in shrinking of the cell when the solution is highly concentrated is called
a ) Endosmosis b ) Exosmosis
c ) Diffusion d ) External thrust
Answer : b ) Exosmosis
( 19 ) Which membrane is responsible for allowing the molecules to pass in a selective manner ?
a ) Semi – permeable b ) Permeable
c ) Both permeable and semi – permeable d ) None of the above
Answer : a ) Semi – permeable
( 20 ) On a theoretical basis, osmosis should not stop unless the concentration of water molecules on both sides of the membrane attain it’s
a ) Position b ) dissimilarity
c ) Uniformity d ) Target
Answer : c ) Uniformity
( 21 ) Isotonic , hypotonic and hypertonic solutions falls under the category of
a ) Tonicity b ) Osmolarity
c ) Emulsion d ) Osmolality
Answer : a ) Tonicity
( 22 ) The solution which does not alter the size and shape of the cell is
a ) Hypertonic b ) Isotonic
c ) Hypotonic d ) Hyposmotic
Answer : b ) Isotonic
( 23 ) The solution which diminishes the size and shape of the cell is
a ) Plasmolysis b ) Hypotonic
c ) Isotonic d ) Hypertonic
Answer : d ) Hypertonic
( 24 ) The solution which enhances the size and shape of the cell is
a ) Isotonic b ) Hypotonic
c ) Hypertonic d ) Tonicity
Answer : b ) Hypotonic
( 25 ) The movement of salt or ion traveling through a cell membrane from the area of lower concentration to the area of higher concentration utilizing energy from the cell is known as
a ) Active transport b ) Passive transport
c ) Facilitated diffusion d ) Simple diffusion
Answer : a ) Active transport
( 26 ) Which nutrients faces difficulty in passing through the cell membrane of the root cells ?
a ) Potassium , zinc b ) Manganese , ions of nitrates
c ) Sulphates d ) All of the above
Answer : d ) All of the above
( 27 ) The movement of molecules from the area of higher concentration to the area of lower concentration without utilizing energy is known as
a ) Solvent b ) Active transport
c ) Passive transport d ) Exosmosis
Answer : c ) Passive transport
( 28 ) The state in which the cell no longer permits to take up water is known by the term of
a ) Rigid b ) Flaccid
c ) Turgid d ) Turbid
Answer : c ) Turgid
( 29 ) ‘ Turgor pressure ‘ literally denotes
a ) External pressure on the cell wall b ) Internal pressure on the cell wall
c ) The pressure of cell contents on the cell membrane d ) The pressure of cell contents on the cell wall
Answer : d ) The pressure of cell contents on the cell wall
( 30 ) The exertion of pressure on the cell content by the cell wall is known as
a ) Turgor pressure b ) Wall pressure
c ) Outward pressure d ) Inward pressure
Answer : b ) Wall pressure
( 31 ) The cell attains it’s balanced position when it enters into
a )Turgid state b ) Flaccid state
c )Uniform state d ) Uneven state
Answer : a ) Turgid state
( 32 ) The term ‘ Deplasmolysis’ mainly indicates
a ) Retrieval of plasmolysis b ) Relapse of plasmolysis
c ) Reconstruction of plasmolysis d ) Remission of plasmolysis
Answer : a ) Retrieval of plasmolysis
( 33 ) The shrinkage of cytoplasm of the plant cell owing to the removal of water from the cell is called
a ) Osmosis b ) Flaccidity
c ) Turgidity d ) Plasmolysis
Answer : d ) Plasmolysis
( 34 ) The condition in which the cell fails to maintain it’s rigidity and is subjected to a loosened state is labelled as
a ) Flaccidity b ) Deplasmolysis
c ) Plasmolysis d ) Turgidity
Answer : a ) Flaccidity
( 35 ) Which method is effective for destroying bacteria by plasmolysis ?
a ) Adding salt to pickles b ) Adding sugar to pickles
c ) Adding spices to pickles d ) Adding oil to pickles
Answer : a ) Adding salt to pickles
( 36 ) Which plants can be destroyed by scattering considerable amount of salt around their bottom ?
( a ) Herbs b ) Climbers
c ) Ferns d ) Weeds
Answer : d ) Weeds
( 37 ) The swift falling of the leaves of plant which is extremely delicate constitutes one of the best example of
a ) Rapid movement b ) Slow movement
c ) Turgor movement d ) Nastic movement
Answer : c ) Turgor movement
( 38 ) The emission of substantial quantity of water from the leaf apex or edge of the leaves is called
a ) Secretion b ) Guttation
c ) Bleeding d ) Dew
Answer : b ) Guttation
( 39 ) Which plant vascular tissueis responsible for directing foodsthat are created inside the leaves to the entire portion of the plant ?
a ) Phloem b ) Xylem
c ) Roots d ) Shoot
Answer : a ) Phloem
( 40 ) The force (s) which plays an essential function in providing upward movement of sap are
a ) Root pressure b ) Capillarity , transpiration pull
c ) Adhesion d ) All of the above
Answer : d ) All of the above
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