22339 + Interview Questions in Biology in Class 11

1.	Question : The chlroid plexus secretes cerebrospinal fluid. Listthe function of it.
Answer» Solution :Cerebro spinal fluid provides buoyancy to the CENTRAL nervous SYSTEM. • It ACTS as a shock absorber for the BRAIN and spinal cord. • It nourishes the brain cells by transporting food and oxygen. • It carries harmful metabolic wastes from the brain to the blood. • It maintains a constant pressure inside the cranial vessels.

Discussion

2.	Question : The choroid plexus found in the roof of the ventricles forms.
Answer» SOLUTION :CEREBRO SPINAL FLUID

Discussion

3.	Question : The chloroplast thylakoids are in the form of :
Answer» INTERCONNECTED sacs interconnected TUBULES INDEPENDENT DISCS STACKED discs Solution :stacked discs

Discussion

4.	Question : The chlorophyll pigmentfoundin xanthophycean alge is ……….. .
Answer» CHLOROPHYLL b Chlorophyll c Chlorophyll d CHOROPHYLL c Answer :D

Discussion

5.	Question : The chitinous exoskeleton of arthropods is formed by the polymerisation of
Answer» N-acetyl glucosamine Lipoglycans KERATIN SULPHATE and CHONDROITIN sulphate D-glucosamine Answer :A

Discussion

6.	Question : The chitinous bristles that earthworms use to anchorthemselves in the earth and pull themselves along are :
Answer» AORTIC arches SETAE PARAPODIA NEPHRIDIA SOLUTION :setae

Discussion

7.	Question : The chief pigment associated with photosynthesis
Answer» Chlorophyll-a Chlorophyll-b Carotenodies Xanthophyll Answer :A

Discussion

8.	Question : The chief function of intercalated discs is
Answer» SLOW CONDUCTION of ACTION potentials conduction of RESTING potentials slow conduction of resting potentials rapid conduction of action potentials Answer :D

Discussion

9.	Question : The chief function of velamen tissue is to .....
Answer» SOLUTION :ABSORB MOISTURE

Discussion

10.	Question : Respiratory centre of brain is senstive to:
Answer» `CO_(2)`ALONE `H^(+)`alone `O_(2)` `CO_(2)` and `H^(+)` SOLUTION :`CO_(2)` and `H^(+)`

Discussion

11.	Question : The chief component of the middle lamella in plant cellsis :
Answer» CALCIUM IRON MAGNESIUM POTASSIUM SOLUTION :calcium

Discussion

12.	Question : The chemiosmotic couplinghypothesisof oxidative phosphorylationthatadenosine triphosphate (ATP) is formed because
Answer» A proton gradient forms across the INNER membrane There is a change in the permeability of the inner mitochondrial membrane TOWARDS ADENOSINE diphosphate (ADP). HIGH energy bonds are formed in mitochondrial proteins ADP is pumped out of the matrixinto the inter membrane space. Answer :A

Discussion

13.	Question : The chemical test that is used for diagnosis of typhoid is
Answer» ELISA ESR PCR Widal test Answer :D

Discussion

14.	Question : The chemical produced by female cockroach for chemocommunication is
Answer» HORMONE enzyme pheromone NONE Answer :C

Discussion

15.	Question : The characters related to ascomycetes are
Answer» SEPARATE BRANCHED mycelium mitospores produced exogenously in chains 4-8 ASCOSPORES inside a sac LIKE ascus all of the above. Answer :D

Discussion

16.	Question : The characteristic features of an invertibrate is given. "The phylum includes the comb jellies, also called walnuts. They are noted for their bio-luminescenceand comb plates." Identify the phylum.
Answer» SOLUTION :CTENOPHORA

Discussion

17.	Question : The characteristic fruit of family Fabaceae is :
Answer» POD SILIQUA ACHENE silicula SOLUTION :pod

Discussion

18.	Question : What is hydroponics?
Answer»

Discussion

19.	Question : The character of birds without exception is …………………… .
Answer» omnivorous beak WITHOUT TEETH flying wings LAY eggs with calcareous shells SOLUTION : beak without teeth

Discussion

20.	Question : The character associated with cartilage
Answer» REACTIVATION of pre-existing chondrocytes Growth OCCURS when cartilage is young and PLIABLE Perichondrial cells DIFFERENTIATE into chondroblasts Growth occurs during childhood Answer :C

Discussion

21.	Question : The chamber of human heart, which has thickest wall
Answer» Right atrium LEFT atrium Right ventricle None of these Solution :the WALL of ventricles are THICKER then those of auricles.Thickest wall is found in the left ventricle.

Discussion

22.	Question : The chaetae in setigerous sac are made up of
Answer» KERATIN poryphyrin CHITIN GLOBIN ANSWER :C

Discussion

23.	Question : The cervical vertebra called axis provids head with sideways rotation. This can be because
Answer» It is articulated to skull through occipital condyles it is fused with `1^(st)` vertebra atlas it is joined through elastic pads of FIBROCARTILAGE with other vertebrae, which provide mobility it contains odontoid process that fits into the odontoid CANAL of atlas. Solution :AXIS (second cervical vertebra) has a peg LIKE process called odontoid process that first into odontoid canal of atlas (first cervical vertebra).

Discussion

24.	Question : The cerebral hemispheres are connected by a tract of nerve fibres called as
Answer» Hypothalamus Corpus CALLOSUM MEDULLA Pons Answer :B

Discussion

25.	Question : The cerebral hemispheres are connected by a tract of nerve fibres called …………………….
Answer» SOLUTION :CORPUS CALLOSUM

Discussion

26.	Question : The centromere or primary constriction of the chromosome contains rings of protein that are intimately associated with a spindle fibre. These rings are called :
Answer» asters secondary constrictions centrioles kinetochores Answer :D

Discussion

27.	Question : The cells with few and irregular cytoplasmic granules are
Answer» Acidophils Basophils Neutrophils Monocytes ANSWER :B

Discussion

28.	Question : The cells which secrete fibres in a connective tissue are known as .......
Answer» SOLUTION :FIBROBLASTS

Discussion

29.	Question : The cells which help in rolling and unrolling of leaf lamina in grasses are :
Answer» COMPLEMENTARY cells Motor cells Passage cells Companion cells Answer :B

Discussion

30.	Question : The cells which help in rolling and unrolling of leaf lamina in grasses are
Answer» COMPLEMENTARY cells bulliform cells passage cells companion cells Answer :B

Discussion

31.	Question : The cells which do not respire
Answer» EPIDERMAL cells Sieve cells Cortical cells Erythocytes Solution :Erythocytes

Discussion

32.	Question :The cells which directly attack and destroy the infected cells
Answer» HELPER T-cells natural KILLER cells helper B-cells killer B-cells ANSWER :B

Discussion

33.	Question : The cells of the quiescent centre are characterized by
Answer» having DENSE CYTOPLASM and prominent nucleus having light cytoplasm and small nucleus dividing REGULARLY to ADD to the corpus dividing regularly to add to tunica Answer :A::C::D

Discussion

34.	Question : The cells of this region undergo active cell division ………………………….
Answer» ROOT HAIR ZONE maturation zone elongation zone MERISTEMATIC zone Solution :meristematic zone

Discussion

35.	Question : The ................. cells of testes secrete male sex hormone
Answer» SOLUTION :(LEYDIG)

Discussion

36.	Question : The cells of pheretima, which play an important role in intermediary metabolism
Answer» circular CELLS phagocytes chloragogencells SUPPORTING cells ANSWER :C

Discussion

37.	Question : The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes
Answer» 8 16 72 24 Answer :A

Discussion

38.	Question : The cells involved in sealing the minor damaged vascular openings are
Answer» megakaryocytes lymphocytes platelets mast CELLS ANSWER :C

Discussion

39.	Question : The cells involved in inflammatory reactions are
Answer» Basophils Neutrophils Eosinophils Lymphocytes Answer :A

Discussion

40.	Question : The cells derived from visceral peritoneum
Answer» YELLOW or chloragogen CELLS PHAGOCYTES CIRCULAR cells mucocytes ANSWER :A

Discussion

41.	Question : The cells are chlorophyllous, fewer in number, dumbbell in shape and inner walls are thick. This description fits to
Answer» SUBSIDIARY CELLS Guard cells Passage cells BULLIFORM cells Answer :B

Discussion

42.	Question :The cell wall of eukaryotic organism is made up of:
Answer» HEMICELLULOSE + PECTIN Hemicellulose + pectin + cellulose Hemicellulose + lipids Hemicellulose + chitin Answer :B

Discussion

43.	Question : The cell walls of parenchyma are made up of _________ .
Answer» SOLUTION :CELLULOSE

Discussion

44.	Question : The cell wall of fungi is made of :
Answer» cellulose pectin CHITIN peptidoglycan Solution :chitin

Discussion

45.	Question : The cell wall of Bacterium is made up of
Answer» Cellulose Hemi cellulose Lignin Peptidoglycan Answer :D

Discussion

46.	Question : The cell wall is not involved in
Answer» ABSORPTION Secretion Translocation OSMOREGULATION ANSWER :D

Discussion

47.	Question : The cell wall is usually composed of three layers………….., ……... and………….
Answer» SOLUTION :MIDDLE lamella , primary WALL , SECONDARY wall

Discussion

48.	Question : The cell wall is interrupted by minute pores called
Answer» MICROTUBULES PLASMODESMATA plasmalemma microfibrils ANSWER :B

Discussion

49.	Question : The cell theory was established by ........
Answer» SOLUTION :SCHLEIDEN and SCHWANN

Discussion

50.	Question : The cell structure present in collenchyma but absent in sclerenchyma is
Answer» LIGNIFIED CELL WALLS Unevenly thicked cell walls Vacuoles Pits in cell wall Answer :C

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : The chlroid plexus secretes cerebrospinal fluid. Listthe function of it.

Question : The choroid plexus found in the roof of the ventricles forms.

Question : The chloroplast thylakoids are in the form of :

Question : The chlorophyll pigmentfoundin xanthophycean alge is ……….. .

Question : The chitinous exoskeleton of arthropods is formed by the polymerisation of

Question : The chitinous bristles that earthworms use to anchorthemselves in the earth and pull themselves along are :

Question : The chief pigment associated with photosynthesis

Question : The chief function of intercalated discs is

Question : The chief function of velamen tissue is to .....

Question : Respiratory centre of brain is senstive to:

Question : The chief component of the middle lamella in plant cellsis :

Question : The chemiosmotic couplinghypothesisof oxidative phosphorylationthatadenosine triphosphate (ATP) is formed because

Question : The chemical test that is used for diagnosis of typhoid is

Question : The chemical produced by female cockroach for chemocommunication is

Question : The characters related to ascomycetes are

Question : The characteristic features of an invertibrate is given. "The phylum includes the comb jellies, also called walnuts. They are noted for their bio-luminescenceand comb plates." Identify the phylum.

Question : The characteristic fruit of family Fabaceae is :

Question : What is hydroponics?

Question : The character of birds without exception is …………………… .

Question : The character associated with cartilage

Question : The chamber of human heart, which has thickest wall

Question : The chaetae in setigerous sac are made up of

Question : The cervical vertebra called axis provids head with sideways rotation. This can be because

Question : The cerebral hemispheres are connected by a tract of nerve fibres called as

Question : The cerebral hemispheres are connected by a tract of nerve fibres called …………………….

Question : The centromere or primary constriction of the chromosome contains rings of protein that are intimately associated with a spindle fibre. These rings are called :

Question : The cells with few and irregular cytoplasmic granules are

Question : The cells which secrete fibres in a connective tissue are known as .......

Question : The cells which help in rolling and unrolling of leaf lamina in grasses are :

Question : The cells which help in rolling and unrolling of leaf lamina in grasses are

Question : The cells which do not respire

Question :The cells which directly attack and destroy the infected cells

Question : The cells of the quiescent centre are characterized by

Question : The cells of this region undergo active cell division ………………………….

Question : The ................. cells of testes secrete male sex hormone

Question : The cells of pheretima, which play an important role in intermediary metabolism

Question : The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes

Question : The cells involved in sealing the minor damaged vascular openings are

Question : The cells involved in inflammatory reactions are

Question : The cells derived from visceral peritoneum

Question : The cells are chlorophyllous, fewer in number, dumbbell in shape and inner walls are thick. This description fits to

Question :The cell wall of eukaryotic organism is made up of:

Question : The cell walls of parenchyma are made up of _________ .

Question : The cell wall of fungi is made of :

Question : The cell wall of Bacterium is made up of

Question : The cell wall is not involved in

Question : The cell wall is usually composed of three layers………….., ……... and………….

Question : The cell wall is interrupted by minute pores called

Question : The cell theory was established by ........

Question : The cell structure present in collenchyma but absent in sclerenchyma is