22339 + Interview Questions in Biology in Class 11 Page 439 InterviewSolution

21901.	Question : A complex of ribosomes attached to a single strand of RNA is known as
Answer» Polysome Polymer POLYPEPTIDE OKAZAKI FRAGMENT ANSWER :A

Discussion

21902.	Question : A complex of ribosomes attached to a single strand of mRNA is known as
Answer» Polymer Polyribosome POLYPEPTIDE Okazakifragment ANSWER :B

Discussion

21903.	Question : A complete set of chromosomes inherited as an unit from one parent is known as:
Answer» KARYOTYPE GENE pool Genotype Genome ANSWER :C

Discussion

21904.	Question : A complete root parasite with largest flower
Answer» Wolffia Raffiesia CUSCUTA Viscum Answer :B

Discussion

21905.	Question : A completeturnof thehelixcomprises ………….
Answer» 34nm 3.4nm 20nm 2nm Solution :3.4 NM

Discussion

21906.	Question : A competitive inhibitor of sucinic dehydrogenose is
Answer» MALONATE OXALOACETATE `ALPHA` - ketoglutarate MALATE ANSWER :A

Discussion

21907.	Question : A compact long bone has number of …………….. systems arranged in concentric circles.
Answer» SOLUTION :HAVERSIAN CANAL

Discussion

21908.	Question : A community that starts the process of succession in a habitat is called
Answer» PIONEER community Abiotic community Biotic community None of these Answer :A

Discussion

21909.	Question : A community that is in near equillibrium with the environment during ecological sucession is
Answer» TROPHIC LEVEL FOOD chain Climax community Food web Answer :C

Discussion

21910.	Question : A community includes _______.
Answer» a group of same genera a group of same POPULATION a group of INDIVIDUALS from same species different populations INTERACTING with each other ANSWER :D

Discussion

21911.	Question : A common structural feature of vessel elements and sieve tube elements is
Answer» ENUCLEATE condition thick secondary walls pores on lateral walls presence of P-protein Solution :Xylem vessels become dead and lose their protoplasm due to DEPOSITION of lighnified secondary WALL MATURE sieve tube elements are living cells WITHOUT nucleus.

Discussion

21912.	Question : A common hornwort is
Answer» ANTHOCEROS Funaria Marchantia RICCIA ANSWER :A

Discussion

21913.	Question : A common characteristic of all vertebrates without any exception is
Answer» Well - developed post -ANAL TAIL Jaws around mouth Two PAIRS of appendages Presence of a skull ANSWER :D

Discussion

21914.	Question : A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is
Answer» ABSENCE of mitochondria Presence of cell wall Presence of haemoglobin Absence of nucleus Solution :Nucleus is ABSENT in cells of SIEVE tube and erythrocytes of mammals.

Discussion

21915.	Question : A common characteristic feature of plant sieve tube cellsand most of mammalian erythrocytes is :
Answer» ABSENCE of mitochondria presence of HAEMOGLOBIN presence of CELL wall absence of nucleus Solution :absence of nucleus

Discussion

21916.	Question : A commercial product agar is produced by
Answer» ECTOCARPUS GELIDIUM Laminaria Chlorella ANSWER :B

Discussion

21917.	Question : A closed circulatory system is found in :
Answer» INSECTS SNAILS EARTHWORMS SCORPIONS SOLUTION :earthworms

Discussion

21918.	Question : A close relation between flower and pollinating agent is best exhibited by
Answer» COCOS SALVIA YUCCA Avena Answer :C

Discussion

21919.	Question :A clone of plasma cells, which produce anti bodies and memory cells are formed by the proliferation and differentiation of
Answer» ANTIGEN PRESENTING cell T lymphocyte B lymphocyte macrophage Answer :C

Discussion

21920.	Question : A: Classification proposed by Bentham and Hooker is nature. R : This system of classification used as many taxonomic characters as possible.
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 :B

Discussion

21921.	Question : A chromosome with two equal arms is
Answer» Sub-metacentric Metacentric Telocentric ACROCENTRIC ANSWER :B

Discussion

21922.	Question : A chromosome with a centromere near its centre is called Acrocentric/metacentric/submetacentric chromosome.
Answer» SOLUTION :Submetacentric.

Discussion

21923.	Question : A chromosome with one extremely short and one very long arm is
Answer» ACROCENTRIC Telocentric Metacentric Sub-metacentric Answer :A

Discussion

21924.	Question : A chromosome with centromeres and arms in 1:1 ratio is
Answer» METACENTRIC SUB metacentric Acrocentric TELOCENTRIC ANSWER :D

Discussion

21925.	Question :A chromosome with only one arm is
Answer» ACROCENTRIC TELOCENTRIC METACENTRIC Sub-metacentric Answer :B

Discussion

21926.	Question : A chromosome with one shorter arm and one longer arm is
Answer» METACENTRIC Sub-metacentric Acrocentric Telocentric ANSWER :B

Discussion

21927.	Question : A child was killed througn aspnyxlation. Post morturm confirmed it because a piece of lung put in water
Answer» SETTLED down KEPT FLOATING Had BLOOD spots None of the above Solution :Kept floating

Discussion

21928.	Question : A characteristic feature of insects is(a) antennae(b) 3 pairs of legs(c) 1 pair of compound eyes(d) 2 pairs of wings
Answer» ANTENNAE 3 pairs of LEGS 1 PAIR of compound eyes 2 pairs of wings

Discussion

21929.	Question : A characteristic pigment of phaeophyceae is …………………. .
Answer» xanthophyle CAROTENOID FUCOXANTHIN chlorophyll Answer :C

Discussion

21930.	Question : A characteristic feature of ctenophores is
Answer» FRESH water habitat asexual REPRODUCTION locomotion by CILIATED comb PLATES absence of larval form Answer :C

Discussion

21931.	Question : A certain tissue in a green plant somehow get blocked and the leaves wilted. What was the tissue that got blocked ?
Answer» Solution :The tissue that got BLOCKED may by xylem. It is through the xylem the WATER and other minerals are transported from root to LEAVES and other parts. So if xylem is blocked, the water and mmineral supply is STOPPED, LEADING to wilting of leaves that eventually may lead to death of the plant.

Discussion

21932.	Question : A certain mass of living material at a particular time in each trophic level is called
Answer» STANDING state Stratification Standing crop Species composition Answer :C

Discussion

21933.	Question : A certain road accident partient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor ?
Answer» Blood group B Blood group AB Blood group O Blood group A Solution :Persons with blood group 'O'(with no antigens on RBCS) are KNOWN as universal donors as they can donate blood to any person of any blood group of ABO system. Thus the blood group of the donor MUST be 'O' which can be SAFELY donated to the patient as the patient's body will not produce any ANTIBODY against the person's blood.

Discussion

21934.	Question : A cellulose molecule is formed by the polymerisation of glucose. The number of glucose molecules present in a cellulose is
Answer» 600 6000 60000 60 Answer :B

Discussion

21935.	Question : A cellorganelle containing
Answer» LYSOSOME Microsome Ribosome MESOSOME ANSWER :C

Discussion

21936.	Question : A cell that lacks chloroplasts does not
Answer» EVOLVE `CO_(2)` LIBERATE `O_(2)` need `H_(2)O` UTILISE sugars Answer :B

Discussion

21937.	Question :A cell placed in a hypertonic salt solution will shrink because
Answer» water will MOVE from the SALT SOLUTION to the cell sap water will move from the cell sap to the salt solution cytoplasm decomposes mineral salts break the cell wall Answer :B

Discussion

21938.	Question : A cell organelle .X. is divided into two types on the basis of a cell organelle .Y., that helps in the protein synthesis. Identify .X. and .Y. respectively
Answer» GOLGI COMPLEX and ribosome ER and MITOCHONDRIA ER and ribosome Lysosome and ER Answer :C

Discussion

21939.	Question : A cell of Ulothrix has how many chlorophasts ?
Answer» SINGLE Many Few None Solution :A CELL of ULOTHRIX has single CHLOROPLAST

Discussion

21940.	Question : A cell organelle containing hydrolytic enzymes
Answer» LYSOSOME Microsome Ribosome MESOSOME ANSWER :A

Discussion

21941.	Question : A cell is kept in water having low water potential. What will happen?
Answer» SOLUTION :Cell WALL undergo exosmosis and GET plasmolysed because low water POTENTIAL means HIGH osmotic concentration.

Discussion

21942.	Question :A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase ? What would be the DNA content (c) during anaphase ?
Answer» Solution :The number of CHROMOSOMES in daughter cells remain same as parent CELL. So number of chromosomes does not change in METAPHASE or Anaphase. The amount of DNA becomes double in S phase of interphase. So if there is 2c in original cells then it becomes 4c.

Discussion

21943.	Question : A cell has 32 chromosomes. It undergoes mitosis. What will be the chromosome number during metaphase?
Answer» Solution :During S phase of INTERPHASE, the genetic MATERIAL of the cell is duplicated. So during metaphase, the chromosome number (chromatid number) will be DOUBLED thus 64 CHROMOSOMES (chromatids) will be present.

Discussion

21944.	Question : A category facing a high risk of extinction in wild in medium term future is
Answer» VU EN EW CR Answer :D

Discussion

21945.	Question : A carpel may be regarded as a modified microsporophyll.
Answer» ANSWER :FALSE

Discussion

21946.	Question : A carpel is composed of three parts : ………..,…… and …..
Answer» SOLUTION :STIGMA, STYLE , OVARY

Discussion

21947.	Question : A carcinogen present in the mould Aspergillus flavus which grows in ground nuts and storage grains is
Answer» Phenacetin vinyl chloride Aflatoxin Benzidine Answer :C

Discussion

21948.	Question : A : C_(4) plants are better adapted in tropicall and desert areas. R : C_(4) plants can perform a high rate of photosynthesis even when stomata are nearly closed.
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

21949.	Question : A : C_(4) plants photosynthesis is more efficient than C_(3) plants. R : C_(4) plants have a shorter CO_(2) fixation cycle.
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

21950.	Question : A bundle of muscle fibres is called
Answer» fasiculii myotome fascicle aponeurosis ANSWER :C

Discussion

Explore topic-wise InterviewSolutions in .

Question : A complex of ribosomes attached to a single strand of RNA is known as

Question : A complex of ribosomes attached to a single strand of mRNA is known as

Question : A complete set of chromosomes inherited as an unit from one parent is known as:

Question : A complete root parasite with largest flower

Question : A completeturnof thehelixcomprises ………….

Question : A competitive inhibitor of sucinic dehydrogenose is

Question : A compact long bone has number of …………….. systems arranged in concentric circles.

Question : A community that starts the process of succession in a habitat is called

Question : A community that is in near equillibrium with the environment during ecological sucession is

Question : A community includes _______.

Question : A common structural feature of vessel elements and sieve tube elements is

Question : A common hornwort is

Question : A common characteristic of all vertebrates without any exception is

Question : A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is

Question : A common characteristic feature of plant sieve tube cellsand most of mammalian erythrocytes is :

Question : A commercial product agar is produced by

Question : A closed circulatory system is found in :

Question : A close relation between flower and pollinating agent is best exhibited by

Question :A clone of plasma cells, which produce anti bodies and memory cells are formed by the proliferation and differentiation of

Question : A: Classification proposed by Bentham and Hooker is nature. R : This system of classification used as many taxonomic characters as possible.

Question : A chromosome with two equal arms is

Question : A chromosome with a centromere near its centre is called Acrocentric/metacentric/submetacentric chromosome.

Question : A chromosome with one extremely short and one very long arm is

Question : A chromosome with centromeres and arms in 1:1 ratio is

Question :A chromosome with only one arm is

Question : A chromosome with one shorter arm and one longer arm is

Question : A child was killed througn aspnyxlation. Post morturm confirmed it because a piece of lung put in water

Question : A characteristic feature of insects is(a) antennae(b) 3 pairs of legs(c) 1 pair of compound eyes(d) 2 pairs of wings

Question : A characteristic pigment of phaeophyceae is …………………. .

Question : A characteristic feature of ctenophores is

Question : A certain tissue in a green plant somehow get blocked and the leaves wilted. What was the tissue that got blocked ?

Question : A certain mass of living material at a particular time in each trophic level is called

Question : A certain road accident partient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor ?

Question : A cellulose molecule is formed by the polymerisation of glucose. The number of glucose molecules present in a cellulose is

Question : A cellorganelle containing

Question : A cell that lacks chloroplasts does not

Question :A cell placed in a hypertonic salt solution will shrink because

Question : A cell organelle .X. is divided into two types on the basis of a cell organelle .Y., that helps in the protein synthesis. Identify .X. and .Y. respectively

Question : A cell of Ulothrix has how many chlorophasts ?

Question : A cell organelle containing hydrolytic enzymes

Question : A cell is kept in water having low water potential. What will happen?

Question :A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase ? What would be the DNA content (c) during anaphase ?

Question : A cell has 32 chromosomes. It undergoes mitosis. What will be the chromosome number during metaphase?

Question : A category facing a high risk of extinction in wild in medium term future is

Question : A carpel may be regarded as a modified microsporophyll.

Question : A carpel is composed of three parts : ………..,…… and …..

Question : A carcinogen present in the mould Aspergillus flavus which grows in ground nuts and storage grains is

Question : A : C_(4) plants are better adapted in tropicall and desert areas. R : C_(4) plants can perform a high rate of photosynthesis even when stomata are nearly closed.

Question : A : C_(4) plants photosynthesis is more efficient than C_(3) plants. R : C_(4) plants have a shorter CO_(2) fixation cycle.

Question : A bundle of muscle fibres is called