22339 + Interview Questions in Biology in Class 11 Page 435 InterviewSolution

21701.	Question : A microelement is one which is
Answer» more IMPORTANT than the macroelement less important than the macroelement present in very SMALL QUANTITIES in the soil needed in very small AMOUNTS but is as important as a macroelement Answer :D

Discussion

21702.	Question : A method of sexual reproduction in which two gametangiafuse to produce a zygote is known as gametangial ………...
Answer» SOLUTION :COPULATION

Discussion

21703.	Question : A metazoa without tissue organisation is called
Answer» Parazoa Protozoa Eumetazoa Dermatozoa Answer :A

Discussion

21704.	Question : A meristematic region present between xylem and phloem of open vascular bundles is called:
Answer» medulary ray pericycle pith intrafascicular cambium Answer :A

Discussion

21705.	Question : A meristematic region present between xylem and phloem of open vascular bundle is called :
Answer» MEDULLARY ray Pericycle Pith Intrafascicularcambium Answer :D

Discussion

21706.	Question : A meristem which divides in all planes is called ____
Answer» INTERCALARY MERISTEM LATERAL meristem Plate meristem MASS meristem ANSWER :A

Discussion

21707.	Question : A meristem in which cells divide in all planes is known as
Answer» PLATE merisem RIB MERISTEM ANGLE meristem MASS meristem Answer :D

Discussion

21708.	Question : A membrane which allows certain substances to passthrough it, but not others is called a selectively permeablemembrane.
Answer» True false Answer :1

Discussion

21709.	Question : State whether the following statement is true or false.A membrane which allows certain substances to pass,but does not allow others to pass through it is called aselectively permeable membrane. A. TrueB. False
Answer» ANSWER :TRUE

Discussion

21710.	Question : A membrane allowingcertain molecule to enter andpreventingthe other is called………….. membrane.
Answer» SOLUTION :SEMIPERMEABLE

Discussion

21711.	Question : A mature mammalian erythrocyte characteristically has :
Answer» a bilobed NUCLEUS no nucleus NUMEROUS plastids two CENTRIOLES SOLUTION :no nucleus

Discussion

21712.	Question : A mature follicle produces _______ polar bodies during oogenesis.
Answer» four THREE two ONE ANSWER :B

Discussion

21713.	Question : A mature female frog can lay _____no.of ova at a time
Answer» 250-300 25-30 2500-3000 4000-6000 ANSWER :C

Discussion

21714.	Question : A marine cartilaginous fish that can produce electric current is:
Answer» Pristis TORPEDO TRYGON Scoliodon Answer :B

Discussion

21715.	Question : A: Many visitor experiences skin and respiratory allergies when they visit hilly areas. R : Pollens produced by gymnosperms are present in air.
Answer» A and R both are CORRECT and R is correct EXPLANATION of A. A and R are correct but R is not explanation of A. A is correct and R is FALSE. A and R are false. ANSWER :A

Discussion

21716.	Question : A major site for synthesis of lipids is
Answer» RER SER SYMPLAST NUCLEOPLASM ANSWER :B

Discussion

21717.	Question : A major characteristic of monocot root is the presence of
Answer» vasculature without CAMBIUM cambium sandwiched between phloem and XYLEM along the RADIUS open vascular bundles scattered vascular bundles Answer :A

Discussion

21718.	Question : A major break through in the studies of cells came with the development of electron microscope. This is because
Answer» The resolution power of the electron MICRO scope is much HIGHER than that of the light microscope The RESOLVING power of the electron micro scope is 200-350nm as compared to 0.1-0.2 nm for the light microscope. Electron beam can pass through thick materials where as light MICROSCOPY REQUIRES thin sections. The electron microscope is more powerful than the light microscope as it uses as beam of electrons which has wavelength much longer than that of photons. Answer :A

Discussion

21719.	Question : A: Lymphatic vessels coming from intestine is red in colour. R : It brings blood from intestine
Answer» A and B both are correct and RIS correct EXPLANATION of A . A and Rare correctbut Ris notexplanationof A. A is CORRECTAND R is false A and Rare false Answer :D

Discussion

21720.	Question : A : Lysosomes helps in process of photorespiration . R : Lysosomes have basic enzymes
Answer» A and R both are CORRECT and R is correct EXPLANATION of A. A and R are correct but R is not explanation of A. A is correct and R is FALSE. A and R are false Answer :D

Discussion

21721.	Question : A low level of expression of lac operon occurs at all the time in E.coli Justify the statement .
Answer» Solution :(i) A low level of lac operon occurs due to the absence of formation of permeases. Permeases are NECESSARY for the transport of lactose from medium into cells. Due to the FAILURE of transport of lactose into the cell, ti will not act as inducer. (ii) Although lactose can induce the expression of lac operon, the level of expression is very low. The reason for this is that the lac operon is subject to catabolite repression or the REDUCED expression of genes brought on by growth in the presence of GLUCOSE.

Discussion

21722.	Question : A long green stem with long internodes growing horizontally on the soil surface is called
Answer» runner sucker stolon offset

Discussion

21723.	Question : A long-day plant needs a long day and short night. If the long-day is interrupted by brief dark periods will it flower ?
Answer» ANSWER :YES

Discussion

21724.	Question : Alocation with luxuriant growth of lichens on the trees indicates that the
Answer» TREES are very healthy Trees are HEAVILY infested Location is not HIGHLY polluted Location is not polluted Answer :D

Discussion

21725.	Question : A living organism is differentiated from non-living structure based on ………………… .
Answer» Reproduction Growth METABOLISM All the above ANSWER :C

Discussion

21726.	Question : A living organism is differentiated from non-living structure based on
Answer» Reproduction Growth Metabolism All the above Answer :A::B::C::D

Discussion

21727.	Question : A living component of xylem element is
Answer» XYLEM tracheids Xylem VESSELS Xylem fibres Xylem parenchyma Answer :D

Discussion

21728.	Question : A living fossil is
Answer» Pinus Ephedra Cedrus Cycas ANSWER :D

Discussion

21729.	Question : A list of steps involved in mechanism of vision is given below in a random order. (i)Neural impulses are analysed and image formed on retina is recognised by visual cortex. (ii)Membrane permeability changes (iii)Ganglion cells are excited (iv)Bipolar cells are depolarised (v)Action potentials (impulse) are transmitted by optic nerves to visual cortex. (vi)Potential differences are generated in the photoreceptor cells. (vii)Light energy causes a change in shape of rhodopsin, leading to the dissociation of retina (an aldehyde of vitamin A ) from opsin (a protein) (viii)Structure of opsin is changed. Which of the following options represents these events in a correct order ?
Answer» (i),(ii),(iii),(IV),(V),(vi),(VII),(viii) (viii),(vii),(vi),(v),(iv),(iii),(ii),(i) (i),(iv),(iii),(ii),(vii),(viii),(vi),(v) (vii),(viii),(ii),(vi),(iv),(iii),(v),(i) SOLUTION :NA

Discussion

21730.	Question : A list of events occurring in the transmission of nerve impulse across the synapse is given below in a random order (i)Opening of specific ion channels allows the entry of ions, a newaction potential is generated in the post-synaptic neuron. (ii)Neurotransmitter binds to the receptor on post synapticmembrane. (iii)Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter release into synaptic cleft. (iv)Depolarisation of pre-synaptic membrane. (v)Arrival of action potential at axon terminal. Which of the following options represents these events in a correct order ?
Answer» `(V)to(IV)to(III)to(II)to(i)` `(i)to(ii)to(iii)to(iv)to(v)` `(i)to(ii)to(iv)to(iii)to(v)` `(v)to(iv)to(iii)to(i)to(ii)` Solution :NA

Discussion

21731.	Question : A: Linnaeus insisted that scientific names should be latinized R: This gives beauty to the names.
Answer» A and R both are correct and R is correct explanation of A. A and R are correct but R is not explanation of A. A is correct and R is FALSE. A and R are false ANSWER :C

Discussion

21732.	Question : A leaf showing stmata and cuticle on upper epidermis, raphides in the mesophyll and diaphragm cells, belongs to a plant that probably is a
Answer» Mesophyte Flating hydophyte SUBMERGED HYDROPHYTE Succulent XEROPHYTE Answer :B

Discussion

21733.	Question : A leaf in which the mid-rib (rachis) bears laterally a numberof leaflets arranged alternately or in opposite manner is known as:
Answer» SIMPLE LEAF pinnately COMPOUND leaf unifoliate leaf DECOMPOUND leaf Solution :pinnately compound leaf

Discussion

21734.	Question : (a)Leaf develops at the node and bears a bud in its axis (b) Axillary bud may develop into a branch (c) Leaves originate from shoot apical meristems and are arranged in basipetal manner. How many statements are correct?
Answer» ONE TWO Three None Answer :B

Discussion

21735.	Question : A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate
Answer» GETS COLLECTED in the renal pelvis is lost as sweat is stored in the urinary bladder is reabsorbed into the blood Answer :D

Discussion

21736.	Question : A layer of cells that surrounds the schizogenous cavity is called
Answer» ENDOTHECIUM EPITHELIUM Epithem Exothecium Answer :B

Discussion

21737.	Question : A large quantity of one of the following is removed from our body by lungs.
Answer» `CO_2` only `H_2O` only `CO_2 and H_2O` ammonia Answer :A::B::C::D

Discussion

21738.	Question : A large number of ions and other materials are transported into the vacuole by
Answer» PASSIVE transport Diffusion Osmosis Active transport Answer :D

Discussion

21739.	Question : A large globular root that tapers sharply at the lower end is called
Answer» FUSIFORM NAPIFORM CONICAL TUBEROUS

Discussion

21740.	Question : A large proportion of oxygen remain unused in the human blood even after its uptake by the body tissues. This O_(2)
Answer» acts as a reserve during MUSCULAR exercise raises the `PCO_(2)` of blood to `75 MM` of `Hg` is enough to keeo oxyhaemoglobin saturation at `96%` helps in RELEASING more `O_(2)` to the epithelial tissues. Solution :N//A

Discussion

21741.	Question :A land plant produces flagellated sperm and the dominant generation is diploid. The plant is most likely :
Answer» FERN MOSS DICOT CONIFER SOLUTION :fern

Discussion

21742.	Question : A land snail, a clam, and an octopus all share :
Answer» a MANTLE a RADULA EMBRYONIC torsion distinct cephalization Solution :a mantle

Discussion

21743.	Question : (A) Lamarck - Theory of use & disuse (B) Darwin - Natural selection (C ) Weismann - Giraffe (D) Huxley - Biogenesis
Answer» A and D B and C C and D C only Answer :C

Discussion

21744.	Question : A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this? i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity ii) The area was sprayed with DDT by an aircraftiii) The lake water turned green and stinky iv)Phytoplankton populations in the lake declined initially, thereby greatly reducing photosynthesis.
Answer» (i), (III) (i), (II) (ii), (iii) (iii), (IV) ANSWER :A

Discussion

21745.	Question : A kidney stone is ………………………………………
Answer» BLOCKAGE by fats Deposition of SAND in kidney A SALT such as OXALATE crystallised in PELVIS Blockage by proteins Solution :A salt such as oxalate crystallised in pelvis

Discussion

21746.	Question : A karyotype is an arrangement of chromosomes from a cell based on their shape, size, and position of their centromeres.
Answer» ANSWER :TRUE

Discussion

21747.	Question : (A) Jurassic - Golden age reptiles (B) Pleistocene - Age of human beings (C ) Holocene - Age of mammals (D) Mississipian - Age of fishes
Answer» A only B and C C and D C only Answer :D

Discussion

21748.	Question : A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:
Answer» PETROMYZON Eptatretus MYXINE Neomyxine ANSWER :A

Discussion

21749.	Question :A is a plant in which the petiole is modified into leaf like structure B is a plant in which upper part of the petiole is modified into tendril. Identify A & B
Answer» AUSTRALIAN Acacia, Nepenthes Zizyphus and Acacia Nepenthes and DROSERA Drosera and DIONAEA ANSWER :A

Discussion

21750.	Question : A .......... is a collection of pressed, dried and preserved plants mounted on ……..
Answer» SOLUTION :HERBARIUM, PAPER SHEETS

Discussion

Explore topic-wise InterviewSolutions in .

Question : A microelement is one which is

Question : A method of sexual reproduction in which two gametangiafuse to produce a zygote is known as gametangial ………...

Question : A metazoa without tissue organisation is called

Question : A meristematic region present between xylem and phloem of open vascular bundles is called:

Question : A meristematic region present between xylem and phloem of open vascular bundle is called :

Question : A meristem which divides in all planes is called ____

Question : A meristem in which cells divide in all planes is known as

Question : A membrane which allows certain substances to passthrough it, but not others is called a selectively permeablemembrane.

Question : State whether the following statement is true or false.A membrane which allows certain substances to pass,but does not allow others to pass through it is called aselectively permeable membrane. A. TrueB. False

Question : A membrane allowingcertain molecule to enter andpreventingthe other is called………….. membrane.

Question : A mature mammalian erythrocyte characteristically has :

Question : A mature follicle produces _______ polar bodies during oogenesis.

Question : A mature female frog can lay _____no.of ova at a time

Question : A marine cartilaginous fish that can produce electric current is:

Question : A: Many visitor experiences skin and respiratory allergies when they visit hilly areas. R : Pollens produced by gymnosperms are present in air.

Question : A major site for synthesis of lipids is

Question : A major characteristic of monocot root is the presence of

Question : A major break through in the studies of cells came with the development of electron microscope. This is because

Question : A: Lymphatic vessels coming from intestine is red in colour. R : It brings blood from intestine

Question : A : Lysosomes helps in process of photorespiration . R : Lysosomes have basic enzymes

Question : A low level of expression of lac operon occurs at all the time in E.coli Justify the statement .

Question : A long green stem with long internodes growing horizontally on the soil surface is called

Question : A long-day plant needs a long day and short night. If the long-day is interrupted by brief dark periods will it flower ?

Question : Alocation with luxuriant growth of lichens on the trees indicates that the

Question : A living organism is differentiated from non-living structure based on ………………… .

Question : A living organism is differentiated from non-living structure based on

Question : A living component of xylem element is

Question : A living fossil is

Question : A: Linnaeus insisted that scientific names should be latinized R: This gives beauty to the names.

Question : A leaf showing stmata and cuticle on upper epidermis, raphides in the mesophyll and diaphragm cells, belongs to a plant that probably is a

Question : A leaf in which the mid-rib (rachis) bears laterally a numberof leaflets arranged alternately or in opposite manner is known as:

Question : (a)Leaf develops at the node and bears a bud in its axis (b) Axillary bud may develop into a branch (c) Leaves originate from shoot apical meristems and are arranged in basipetal manner. How many statements are correct?

Question : A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate

Question : A layer of cells that surrounds the schizogenous cavity is called

Question : A large quantity of one of the following is removed from our body by lungs.

Question : A large number of ions and other materials are transported into the vacuole by

Question : A large globular root that tapers sharply at the lower end is called

Question : A large proportion of oxygen remain unused in the human blood even after its uptake by the body tissues. This O_(2)

Question :A land plant produces flagellated sperm and the dominant generation is diploid. The plant is most likely :

Question : A land snail, a clam, and an octopus all share :

Question : (A) Lamarck - Theory of use & disuse (B) Darwin - Natural selection (C ) Weismann - Giraffe (D) Huxley - Biogenesis

Question : A kidney stone is ………………………………………

Question : A karyotype is an arrangement of chromosomes from a cell based on their shape, size, and position of their centromeres.

Question : (A) Jurassic - Golden age reptiles (B) Pleistocene - Age of human beings (C ) Holocene - Age of mammals (D) Mississipian - Age of fishes

Question : A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:

Question :A is a plant in which the petiole is modified into leaf like structure B is a plant in which upper part of the petiole is modified into tendril. Identify A & B

Question : A .......... is a collection of pressed, dried and preserved plants mounted on ……..