22339 + Interview Questions in Biology in Class 11 Page 246 InterviewSolution

12251.	Question : Root that grow from any part of the plant body other than the radicle are called_____
Answer» Fibrous ADVENTITIOUS tap SOLUTION :adventitious

Discussion

12252.	Question : Roots arise .......... from the .......... cells.
Answer» SOLUTION :ENDOGENOUSLY , PERICYCLE

Discussion

12253.	Question : Roots are modified to perform physiological function in
Answer» Taeniophyllum Rhizophora Rafflesia All the above Answer :D

Discussion

12254.	Question : Roots are significant in the exchange of gases
Answer» pneumatophore stlit root pillar root assimilatory root Answer :A

Discussion

12255.	Question : Roots are non-green coloured. Is there is any green coloured root ? Explain.
Answer» Solution :YES, roots of certain epiphytic & climbing plants develop chlorophyll and TURN green to perform the function of photosynthesis. Such a root is called PHOTOSYNTHETIC root or ASSIMILATORY root. Eg., Tinospora.

Discussion

12256.	Question : Roots are described as adventitious depending upon their :
Answer» ANATOMY FUNCTION PLACE of ORIGIN external structure Solution :place of origin

Discussion

12257.	Question : Roots and shoots lengthen through activity at :
Answer» APICAL MERISTEMS vascular CAMBIUM LATERAL meristems cork cambium Solution :apical meristems

Discussion

12258.	Question : Roots are
Answer» DESCENDING, NEGATIVELY geotrophic, POSITIVELY PHOTOTROPHIC descending, positively geotrophic, negatively phototrophic ASCENDING, positively geotrophic, negatively phototrophic ascending, negatively geotrophic, positively phototrophic Solution :descending, positively geotrophic, negatively phototrophic

Discussion

12259.	Question : Root, shoot or leaf, which area of plant has a quiescent centre.
Answer» SOLUTION :ROOT TIP.

Discussion

12260.	Question : Root pressure develops due to
Answer» active transpiration active process in the cell passive process in the CELLS HIGH WATER content in soil

Discussion

12261.	Question : Root pressure is caused by:
Answer» TRANSPIRATION of water out of the xylem osmotic FLOW of water into the xylem cchesion of water molecules to ONE another adhesion of water molecules to WALS of the xylem Answer :B

Discussion

12262.	Question : Root pockets are seen in …………………..
Answer» PANDANUS PISTIA BOUGAINVILLEA PEA SOLUTION :Pistia

Discussion

12263.	Question : Root pockets are found in
Answer» Balancing roots of Eichhornia Velamen rootsof Vanda Stilt roots of SUGAR cane BREATHING roots of Rhizophora Answer :A

Discussion

12264.	Question : Root nodules are formed from the cells of
Answer» epidermis cortex vascular CYLINDER pith Answer :B

Discussion

12265.	Question : Root modification seen in the stem of Maize and Sugarcane is
Answer» PROP roots STILT roots Balancing roots Respiratory roots Answer :B

Discussion

12266.	Question : Root modification helps in the absorption of moisture from the atmosphere
Answer» PNEUMATOPHORE Velamen ROOTS Nodular ROOT Balancing root Answer :B

Discussion

12267.	Question : Root-like, leaf-like and stem-like structures are present in
Answer» BRYOPHYTES Pteridophytes Gymnosperms Both A and B Solution :Root-like, leaf-like and stem-like STRUCTURES are POSSESSED by bryophytes.

Discussion

12268.	Question : Root hairs develop from the rgion of :
Answer» REGION of maturation Region of ELONGATION Region of MERISTEMATIC ACTIVITY Region of elogation of meristematic activity Answer :A

Discussion

12269.	Question : Root hairs originated from. . . . . . . . .
Answer» Trichomes Epidermis Pericycle Trichoblasts Solution :Trichoblasts

Discussion

12270.	Question : Root hairs do not play a role in
Answer» WATER uptake oxyger uoteke carbon DIOXIDE uptake mineral uptake Answer :C

Discussion

12271.	Question : Root hairs are found in the zone of :
Answer» CELL DIVISION APICAL meristem maturation ELONGATION SOLUTION :elongation

Discussion

12272.	Question :Root hairs are formed from extensions of the …………
Answer» SOLUTION :EPIDERMAL CELLS

Discussion

12273.	Question : Root hair are multicellular.
Answer» SOLUTION :ROOT HAIRS are ALWAYS UNICELLULAR.

Discussion

12274.	Question : Root hairs are
Answer» Endogenous Multicelleular PROTECTED by ROOT cap Unicellular and short LIVED ANSWER :D

Discussion

12275.	Question : Root developed from parts of the plant other than radicle are called
Answer» Tap ROOTS Fibrous roots Adventitious roots Nodular roots Solution :Tap roat is produced from radicle of EMBRYO and develops into primary root by establishing permanently. Fibrous roots are thin THREAD like branched roots that is produced from basal part of the stem . They are modification of tap root in monocot plants. Rhizome roots are also modifications of tap root in which root and its branches produce small and big swollen/inflated STRUCTURES. They are called Rhizomes. It helps in NITROGEN fixation.

Discussion

12276.	Question : Root cap regenerates from
Answer» CALYPTROGEN PLEROME PERIBLEM Dermatogen Answer :A

Discussion

12277.	Question : Root cap is made up of ………………….. cells.
Answer» PARENCHYMA collenchyma selerenchyma chlorenchyma Solution :parenchyma

Discussion

12278.	Question : Root cap is formed from calyptrogen in monocots.
Answer» ANSWER :TRUE

Discussion

12279.	Question : Root :
Answer» Solution :The plant.s UNDERGROUND ORGAN is root that grows TOWARDS gravity, SOIL and water and against the direction of sunlight and air.

Discussion

12280.	Question : Root pressure can be measured by
Answer» osmometer potometer manometer pyrometer Answer :C

Discussion

12281.	Question : Rolling or folding of individual leaves is called
Answer» VENATION phyllotaxy PTYXIS branching Solution :ptyxis

Discussion

12282.	Question : Rolling & unrolling of leaves due to whether change are controlled by. . . . . .. . . . . .
Answer» SENSORY cells MOTOR cells Subsidory cells TRICHOMES Answer :B

Discussion

12283.	Question : Role of oxygen in photosynthesis is as a(A) reactant(B) product(C) byproduct(D) catalyst
Answer» reactant product byproduct catalyst Answer :C

Discussion

12284.	Question : Rods and cones are modified
Answer» MULTIPOLAR neurons unipolar neurons bipolar neurons none of these

Discussion

12285.	Question : Rod shaped elongated thick walled lignified dead cells found in seed coat of pulse legumes are
Answer» Macrosclereids Astrosclereids Branchysclereids Osteosclereids Answer :A

Discussion

12286.	Question : Rod shaped elongated sclereids found in the seed coats of pulses are known as
Answer» Brachysclereids Macrosclereids Osteosclereids Trichosclereids Answer :B

Discussion

12287.	Question : Robertson :
Answer» Solution :He EXPLAINED the structure of CELL membrane through unit membrane concept. ACCORDING to him, a non uniform protein LAYER is seen around bilayered lipid on its both sides.

Discussion

12288.	Question : Robert Hook (1665) :
Answer» Solution :He first of all studied bark of an oak TREE under MICROSCOPE and PROPOSED the WORD CELL.

Discussion

12289.	Question : Robert Brown discovered the nucleus in the cells of ____roots.
Answer» Mirabilas ORCHID Moringa Oryza Solution :Orchid

Discussion

12290.	Question : Robert Brown (1831) :
Answer» SOLUTION :He DISCOVERED NUCLEUS in CELL.

Discussion

12291.	Question : RNA which is almost in the form of a regular double helix is
Answer» R RNA m RNA DS RNA t RNA Answer :A

Discussion

12292.	Question : RNA viruses can mutate faster. justify.
Answer» Solution :Both DNA and RNA are able to MUTATE RNA being unstable, mutates at a faster rate. Thus viruses having RNA genome with SHORTER life SPAN can mutate and evolve faster.

Discussion

12293.	Question : RNA is ____
Answer» SINGLE STRANDED and stable Single stranded and UNSTABLE Double stranded and stable Double stranded and unstable Solution :Single stranded and unstable.

Discussion

12294.	Question : Ripening of fruits/cell division promoting activity have been identified by cytokinnin.
Answer» SOLUTION :CELL DIVISION PROMOTING

Discussion

12295.	Question : Ringworm is caused by
Answer» Bacteria virus protozoa fungi Answer :D

Discussion

12296.	Question : Ringworm is a
Answer» AIR BORNE disease Infection disease Non-infectious disease None of these Answer :B

Discussion

12297.	Question : Ringing/girdling experiments demonstrate
Answer» PHLOEM is responible for translocation of food Xylem is RESPONSIBLE for ascent of sap TRANSPIRATION pull Both `(a)` and `(B)` Solution :N//A

Discussion

12298.	Question : Ring like arrangement of large number of vascular bundles is seen in
Answer» DICOT ROOT MONOCOT STEM Dicot stem Monocot root Answer :C

Discussion

12299.	Question : Right ventricular wall is thinner than the left ventricular wall. Why ?
Answer» Solution :The RIGHT ventricle PUMPS deoxygenated blood, to the lungs through pulmonary artery. The left ventricle pumps the oxygenated blood to all parts t the BODY through the aorta. Hence left ventricle has to EXERT more pressure. Hence right ventricular wall is thinner but the left ventricular walls is thicker.

Discussion

12300.	Question : Right aortic arch is present in……………….. .
Answer» REPTILES only MAMMALS only BIRDS only both birds and mammals SOLUTION :birds only

Discussion

Explore topic-wise InterviewSolutions in .

Question : Root that grow from any part of the plant body other than the radicle are called_____

Question : Roots arise .......... from the .......... cells.

Question : Roots are modified to perform physiological function in

Question : Roots are significant in the exchange of gases

Question : Roots are non-green coloured. Is there is any green coloured root ? Explain.

Question : Roots are described as adventitious depending upon their :

Question : Roots and shoots lengthen through activity at :

Question : Roots are

Question : Root, shoot or leaf, which area of plant has a quiescent centre.

Question : Root pressure develops due to

Question : Root pressure is caused by:

Question : Root pockets are seen in …………………..

Question : Root pockets are found in

Question : Root nodules are formed from the cells of

Question : Root modification seen in the stem of Maize and Sugarcane is

Question : Root modification helps in the absorption of moisture from the atmosphere

Question : Root-like, leaf-like and stem-like structures are present in

Question : Root hairs develop from the rgion of :

Question : Root hairs originated from. . . . . . . . .

Question : Root hairs do not play a role in

Question : Root hairs are found in the zone of :

Question :Root hairs are formed from extensions of the …………

Question : Root hair are multicellular.

Question : Root hairs are

Question : Root developed from parts of the plant other than radicle are called

Question : Root cap regenerates from

Question : Root cap is made up of ………………….. cells.

Question : Root cap is formed from calyptrogen in monocots.

Question : Root :

Question : Root pressure can be measured by

Question : Rolling or folding of individual leaves is called

Question : Rolling & unrolling of leaves due to whether change are controlled by. . . . . .. . . . . .

Question : Role of oxygen in photosynthesis is as a(A) reactant(B) product(C) byproduct(D) catalyst

Question : Rods and cones are modified

Question : Rod shaped elongated thick walled lignified dead cells found in seed coat of pulse legumes are

Question : Rod shaped elongated sclereids found in the seed coats of pulses are known as

Question : Robertson :

Question : Robert Hook (1665) :

Question : Robert Brown discovered the nucleus in the cells of ____roots.

Question : Robert Brown (1831) :

Question : RNA which is almost in the form of a regular double helix is

Question : RNA viruses can mutate faster. justify.

Question : RNA is ____

Question : Ripening of fruits/cell division promoting activity have been identified by cytokinnin.

Question : Ringworm is caused by

Question : Ringworm is a

Question : Ringing/girdling experiments demonstrate

Question : Ring like arrangement of large number of vascular bundles is seen in

Question : Right ventricular wall is thinner than the left ventricular wall. Why ?

Question : Right aortic arch is present in……………….. .