22339 + Interview Questions in Biology in Class 11 Page 272 InterviewSolution

13551.	Question : One molecule of haemoglobincarriesmolecules of oxgyen :
Answer» ONE TWO THREE Four Answer :D

Discussion

13552.	Question : One mole of glucose on metabolism liberate how many kilo calories of energy ?
Answer» 180 80 160 280 Answer :D

Discussion

13553.	Question : One important difference between the anatomy andphysiology of roots and leaves is that:
Answer» unlike roots, the xylem VESSELS in LEAVES normallytransport sap in both directions a waxy cuticle COVERS most leaves but is absent in roots leaves, but not roots, have ground tissue consistingmainly of PARENCHYMA cells phloem always conducts sap away from leaves and toward roots Solution :a waxy cuticle covers most leaves but is absent in roots

Discussion

13554.	Question : One genome is which type of set of Chromosomes
Answer» Haploid Diploid Triploid Polyploid Answer :A

Discussion

13555.	Question : One gene one enzyme hypothesis was proposed by Beadle and Tatum based on "__________"
Answer» Yeast Drosophila E.coli Neurospora Answer :D

Discussion

13556.	Question : One gene 'L' controlling blood groups is named after __________
Answer» C. B. Bridges Henking Landsteiner Stevens Answer :C

Discussion

13557.	Question : One difference between a cancer cell and a normal cell is
Answer» CANCER cells cannot function properly because they suffer from CONTACT inhibition cancer cells continue to divide even when they are TIGHTLY packed cell cycle of the cancer cell is arrested at the S phase cancer cell is unable to SYNTHESIZE DNA Answer :B

Discussion

13558.	Question : One can easily differentiate between a protonera of mossand a multicellular, filamentous green alga as the former does not contain chloroplast in the rhizoids and bears budswhich give rise to erect, leafy gametophores.
Answer» ANSWER :1

Discussion

13559.	Question : One can differentiate the nature of guard cells between dicots and grasses by
Answer» Its SHAPE Its secretion of chemicals Its ENZYMATIC ACTIVITY None of these Answer :A

Discussion

13560.	Question : One advantage of cleistogamy is
Answer» it leads to GREATER genetic diversity seed dispersal is more efficient and wides pread seed SET is not dependent on pollinators each visit of a POLLINATOR RESULTS in trasfer ofhundreds of pollen grains Answer :C

Discussion

13561.	Question : On which plants did Darwin and Francis conduct their experiments ?
Answer» SOLUTION :OAT, AVENA and GRASS, Phalaris.

Discussion

13562.	Question : On which basis, the carrier proteins are classified ? Mention its types.
Answer» Solution :There are THREE types of carrier PROTEINS on the basis of handling of molecules and direction of transport. They are, i. UNIPORT, ii. Symport and III. ANTIPORT.

Discussion

13563.	Question :On the left side of the right atrium there is a node called...............
Answer» SOLUTION :Auriculo VENTRICULAR NODE.

Discussion

13564.	Question : On the basis of organelles which types of cell are found ?
Answer» Solution :Cell is the smallest unit of living organism like plants, animals and other micro ORGANISMS also possess cellular structure. On the basis of organelles found in a cell, cells are of two types : (a) prokaryotic (b) eukaryotic. Eukaryotic cells on the basis of presence of cell wall / absence of cell wall possess two clear structures, plant cell and animal cell. Typical plant cell is studied by onion cell and animal cell can be studied by human chick cells. In a plant cell, a distinct cell wall and below it there is a cell membrane. In an animal cell, there is an outer membrane only. Inside each cell is a dense membrane bound structure called nucleus. This nucleus contains the chromosomes which in turn contains the genetic material, DNA. Cells that have membrane bound nuclei are called eukaryotic WHEREAS cells that lack a membrane bound nucleus are called prokaryotic cell. Cytoplasm : In both prokaryotic and eukaryotic cells, a semi-fluid matrix called cytoplasm occupies the volume of the cell. The cytoplasm is the main arena of cellular activities in both the plant and animal cells. Various chemical reactions occur in it to keep the cell in the .living state. Parkinje proposed the word .protoplasm. for this matrix. Its matrix contains 65 - 80% water. Its 95% part is formed of combination of main four elements. C, H, O, N, in remaining 5% thirty elements like Cat, K+, S are in the form of compound Eukaryotic cells have other membrane bound distinct structures called organelles like the endoplasmic reticulum, the golgi COMPLEX, lysosomes, mitochondria and VACUOLES. The prokaryotic cells lack such membrane bound organelles. Ribosomes are non-membrane bound organelles found in all cells both eukaryotic as well as prokaryotic. Within the cell, ribosomes are found not only in the cytoplasm but also within the two organelles, chloroplasts and mitochondria and on rough ER. Animal cells contain another non-membrane bound organelle called centriole which helps in cell division.

Discussion

13565.	Question : On the basis of numbers, give types of stament and give examples.
Answer» Solution :Androecium is composed of stamens. Each stamen represents male reproductive organ. Each stamen consists of a FILAMENT and anther. Pollen grains are produced in pollen-sacs. Each anther is usually bilobed and each lobe has two chambers, the pollen-sacs. Pollen grains are produced in pollen-sacs. A sterile stamen is CALLED staminode. Filament and anther are CONNECTED by connective. Stamens of flower may be united with other members such as petals or among themselves. Epipetalous : When stamens are attached to the petals, they are epipetalous e.g. brinjal. Epiphyllous : When stamens are attached to the PERIANTH they are epiphyllous as in the flower lily Polyandrous : The stamens in a flower may either remain free is called Polyandrous. Monoadelphous : The stamens may be united into one bunch or one BUNDLE is called monoa delphaes c.g. china rose. Diadelphous and Polydelphous : Stamens may be united in two bundles is called Diadelphous. Stamens may be united into more than two bundles is called Polydelphous stamen. There may be a variation in the length of filaments within a flower, e.g. Salvia and mustard.

Discussion

13566.	Question : A nerve impulse will travel through a nerve fibre only if its membrane suddenly becomes more permeable to ions of
Answer» SOLUTION :`K^(+)` IONS

Discussion

13567.	Question : On seeing a tiger, the heart beat and blood pressure increase due to release of hormone.
Answer» Corticoids THYROXINE ADRENALINE PARATHORMONE SOLUTION :Thyroxine

Discussion

13568.	Question : On reaction with alpha+ ketoglutaric acid, ammonia yields ………………… .
Answer» GLUTAMATE MALATE GLUTAMINE Oxoglutarate ANSWER :A

Discussion

13569.	Question : On reaching the ovary, the pollen tube releases 2 male gametes. One fuses with the egg cell of ovule to form_________while the other fuses with the secondary nucleus to form_________
Answer» SOLUTION :DIPLOID, ZYGOTE, TRIPLOID

Discussion

13570.	Question : On oxidation in mitochondria one molecule of NADH_2 yield …………………ATPs.
Answer» 2 4 3 1 Answer :C

Discussion

13571.	Question : On maturity an ovule forms a
Answer» seed fruit EMBRYO SAC ENDOSPERM

Discussion

13572.	Question : On germination a seed first produces shoots with leaves, flowers appear later, (A) Why do you think this happens ? (B) How is this advantageous to the plant ?
Answer» Solution :(A) As soon as seed germinates, the plant enters into vegetative growth period. This period takes LIGHT stimulus (a critical length of light exposed to different PLACE, i.e., photoperiod) and synthesise the florigen (a flowering HORMONE) which induce flowering. (B) The vegetative growth period prepares the plant to bear reproductive structures like FLOWER, fruits and seeds and allows it to grow mature and reproduce.

Discussion

13573.	Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. Which probable disease are these people suffering from ?
Answer» Solution :Such, PEOPLE may be SUFFERING from goitre disease DUE to DIFICIENCY of Iodine. Neck is SWOLLEN in this disease.

Discussion

13574.	Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. How is it caused ?
Answer» SOLUTION :Thyroid hormones `T_(3)` and `T_(4)` requires iodine. Due to DIFICIENCY of iodine HYPOTHYROIDISM is observed in which thyroid GLAND ENLARGES.

Discussion

13575.	Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. What effect does this condition have on pregnancy ?
Answer» SOLUTION :During pregnancy such hypothyroidism develops abnormal symptoms in developing foetus which SHOW CRETINISM, mental retardation, abnormal rough skin, Deaf - Dumbness can be expected.

Discussion

13576.	Question : On an educational tour to Nilgirls Nitish and his friends observed the local people.Few fo them were with swollen neck. It is a disease ?If so what is the cause? How is the discase treated?
Answer» Solution : Yes it is a DISEASE, KNOWN as the Grave's disease. Three TREATMENT OPTIONS for the Grave's disease are: medicine, radiolodine therapy, and THYROID surgery.

Discussion

13577.	Question : On a warm summer day the transpiration pull is the main force that drives from root parenchyma into the root xylem. The table shows values of Psi_(rho)(pressure potential ) and Psi_(s)(solute potential) in root xylem and root parenchyma , in kPa. In which of the options (a-d) would tranpiration pull cause water to move from root parenchyma into the root xylem?
Answer» <P>`{:("Root parenchyma",,"Root xylem"),(Psi_(p) "" Psi_(s),,Psi_(p)""Psi_(s)),("200-190",,"-2005"):}` `{:("Root parenchyma",,"Root xylem"),(Psi_(p) "" Psi_(s),,Psi_(p)""Psi_(s)),("-200220",,"65-5"):}` `{:("Root parenchyma",,"Root xylem"),(Psi_(p) "" Psi_(s),,Psi_(p)""Psi_(s)),("200-220",,"65-5"):}` `{:("Root parenchyma",,"Root xylem"),(Psi_(p) "" Psi_(s),,Psi_(p)""Psi_(s)),("200-220",,"-65-5"):}` SOLUTION :N//A

Discussion

13578.	Question :On a field trip you came across an animal having four pairsof legs and body divided into two major divisions. In your opinion, to which group does that animal belong.
Answer» SOLUTION :Subphylum Chelicerata of PHYLUM ARTHROPODA.

Discussion

13579.	Question :On a hot summer day cooling of plant occurs due to
Answer» loss of water vapours from leal transport of water in plant loss of LIQUID water loss of water from ENTIRE plant Answer :A

Discussion

13580.	Question : Ommatidia are the units that constitute the compound eyes in…………………. .
Answer» FISH INSECTS MAMMALS BIRDS SOLUTION :Insects

Discussion

13581.	Question : Omnis -cellula -e-cellula was given by
Answer» VIRCHOW Hooke Leeuwenhoek ROBERT BROWN ANSWER :A

Discussion

13582.	Question : Omithine an amino acid is found
Answer» As an INTERMEDIATE of methonine metabolism As an intermediate of methonine metabolism AS a major fraction of the CONNECTIVE tissue In BILE salts Solution :N//A

Discussion

13583.	Question : Olfactory senillae are present on
Answer» antennae, labrum, maxillae LABIAL palps, maxillary palps and antennae antennae, labrum, tarsus maxillary palps, labial palps, tarsus ANSWER :B

Discussion

13584.	Question : Olfactory receptors are present in
Answer» eye nose ear skin Solution :NA

Discussion

13585.	Question : Old people have weak immune system. What could be the reason ?
Answer» Solution :Thymus gland is LOCATED on the dorsal side of heart and dorsal aorta. Thymus gland secrete thymosin hormone which PRODUCES leucocytes responsible for IMMUNITY against diseases. In old person, thymus gland degenerates. So thymosin production reduces as a result old pople have weak immunity.

Discussion

13586.	Question : Olfactory nerve helps the animal to (a) hear(b) smell(c) taste(d) vision
Answer» hear smell taste vision

Discussion

13587.	Question : Olfactoreceptors are for
Answer» touch pain smell pressure

Discussion

13588.	Question : Oils and Leucosine are characteristic stored food in
Answer» DINOFLAGELLATES EUGLENOIDS Diatoms None Answer :C

Discussion

13589.	Question : Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because
Answer» Sexual reproduction is a lengthly process Gametes of PARENTS have qualitatively DIFFERENT genetic composition Genetic material comes from parents of two different species Greater amount of DNA is involved in sexual reproduction ANSWER :B

Discussion

13590.	Question : Offsets, rosette of leaves, swollen petiole, green lamina, balancing roots, aquatic plant, root pockets, spongy stem, Discoid stem and Terror of Bengal. Among these how many points are applicable to water hyacinth?
Answer» SEVEN only NINE only EIGHT only All the above Answer :D

Discussion

13591.	Question : Officially, every state in the Republic of India has its own flower, fruit etc. If Andhra Pradesh has Lotus as its state flower, what is the state flower of Tamil Nadu? Mention its family.
Answer» Solution : STATE flower of TAMILNADU is Gloriosa superba BELONGING to LILIACEAE family.

Discussion

13592.	Question : Offset type of stem is found in
Answer» PISTIA EICHHORNIA OPUNTIA 1 & 2 Answer :D

Discussion

13593.	Question : Of what medullary rays made ? (A) Fibres (B) Tracheids (C) Sclerenchyma cells (D) Parenchyma cells
Answer» Fibres Tracheids Sclerenchyma cells Parenchyma cells Answer :A::C

Discussion

13594.	Question : Which one is least toxic out of these three: uric acid, urea and ammonia? Give 2 exampleswhich excrete this product.
Answer» SOLUTION :URIC ACID, BIRDS and TERRESTRIAL insects.

Discussion

13595.	Question :Most important ore of tin is
Answer» SOLUTION :APOPLAST PATHWAY.

Discussion

13596.	Question : Of the lateral meristem, cork cambium forms………. and……… while vascular cambium forms ..........
Answer» Solution :cork CELLS , PHELLODERM , secondary VASCULAR tissue

Discussion

13597.	Question : Of the following which is respiratory organ of scorpion ?(A) Gills(B) Lungs(C) Ctenidia(D) Booklungs
Answer» Gills Lungs Ctenidia BOOKLUNGS Solution :Booklungs

Discussion

13598.	Question : Of the following which one is classified on the basis of sedimentation co-efficient?
Answer» ENDOPLASMIC reticulum Ribosomes Nucleus Golgi complex Answer :B

Discussion

13599.	Question : Of the following, which is not associated with themitochondria?
Answer» ATP production Cristae STROMA MATRIX SOLUTION :Stroma

Discussion

13600.	Question : Of the following, which is mismatched with its partner ?
Answer» Agnathans - JAWLESS FISH Gnathostomata-Jawed fish Chondrichthyes-BONY fish OSTEICHTHYES - Bony fish Solution :Chondrichthyes-Bony fish

Discussion

Explore topic-wise InterviewSolutions in .

Question : One molecule of haemoglobincarriesmolecules of oxgyen :

Question : One mole of glucose on metabolism liberate how many kilo calories of energy ?

Question : One important difference between the anatomy andphysiology of roots and leaves is that:

Question : One genome is which type of set of Chromosomes

Question : One gene one enzyme hypothesis was proposed by Beadle and Tatum based on "__________"

Question : One gene 'L' controlling blood groups is named after __________

Question : One difference between a cancer cell and a normal cell is

Question : One can easily differentiate between a protonera of mossand a multicellular, filamentous green alga as the former does not contain chloroplast in the rhizoids and bears budswhich give rise to erect, leafy gametophores.

Question : One can differentiate the nature of guard cells between dicots and grasses by

Question : One advantage of cleistogamy is

Question : On which plants did Darwin and Francis conduct their experiments ?

Question : On which basis, the carrier proteins are classified ? Mention its types.

Question :On the left side of the right atrium there is a node called...............

Question : On the basis of organelles which types of cell are found ?

Question : On the basis of numbers, give types of stament and give examples.

Question : A nerve impulse will travel through a nerve fibre only if its membrane suddenly becomes more permeable to ions of

Question : On seeing a tiger, the heart beat and blood pressure increase due to release of hormone.

Question : On reaction with alpha+ ketoglutaric acid, ammonia yields ………………… .

Question : On reaching the ovary, the pollen tube releases 2 male gametes. One fuses with the egg cell of ovule to form_________while the other fuses with the secondary nucleus to form_________

Question : On oxidation in mitochondria one molecule of NADH_2 yield …………………ATPs.

Question : On maturity an ovule forms a

Question : On germination a seed first produces shoots with leaves, flowers appear later, (A) Why do you think this happens ? (B) How is this advantageous to the plant ?

Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. Which probable disease are these people suffering from ?

Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. How is it caused ?

Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. What effect does this condition have on pregnancy ?

Question : On an educational tour to Nilgirls Nitish and his friends observed the local people.Few fo them were with swollen neck. It is a disease ?If so what is the cause? How is the discase treated?

Question :On a field trip you came across an animal having four pairsof legs and body divided into two major divisions. In your opinion, to which group does that animal belong.

Question :On a hot summer day cooling of plant occurs due to

Question : Ommatidia are the units that constitute the compound eyes in…………………. .

Question : Omnis -cellula -e-cellula was given by

Question : Omithine an amino acid is found

Question : Olfactory senillae are present on

Question : Olfactory receptors are present in

Question : Old people have weak immune system. What could be the reason ?

Question : Olfactory nerve helps the animal to (a) hear(b) smell(c) taste(d) vision

Question : Olfactoreceptors are for

Question : Oils and Leucosine are characteristic stored food in

Question : Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because

Question : Offsets, rosette of leaves, swollen petiole, green lamina, balancing roots, aquatic plant, root pockets, spongy stem, Discoid stem and Terror of Bengal. Among these how many points are applicable to water hyacinth?

Question : Officially, every state in the Republic of India has its own flower, fruit etc. If Andhra Pradesh has Lotus as its state flower, what is the state flower of Tamil Nadu? Mention its family.

Question : Offset type of stem is found in

Question : Of what medullary rays made ? (A) Fibres (B) Tracheids (C) Sclerenchyma cells (D) Parenchyma cells

Question : Which one is least toxic out of these three: uric acid, urea and ammonia? Give 2 exampleswhich excrete this product.

Question :Most important ore of tin is

Question : Of the lateral meristem, cork cambium forms………. and……… while vascular cambium forms ..........

Question : Of the following which is respiratory organ of scorpion ?(A) Gills(B) Lungs(C) Ctenidia(D) Booklungs

Question : Of the following which one is classified on the basis of sedimentation co-efficient?

Question : Of the following, which is not associated with themitochondria?

Question : Of the following, which is mismatched with its partner ?

Question : On reaching the ovary, the pollen tube releases 2 male gametes. One fuses with the egg cell of ovule to form_while the other fuses with the secondary nucleus to form_