22339 + Interview Questions in Biology in Class 11

1.	Question : Phycoreythrin pigment is found in
Answer» GREEN ALGAE Red algae Brown algae All of the above Solution :Phycoerythrin PIGMENT is found in Red algae.

Discussion

2.	Question : Phylloclade :
Answer» Solution : In Australian acacia, leaves are compound and feather LIKE pinnately leaflets are small which shed. PETIOLE BECOMES Nat and green and contains CHLOROPHYLL and MAKES food by photosynthesis. Such a structure is called phylloclade.

Discussion

3.	Question : Phycology is the study of ………
Answer» VIRUS ALGAE PLANTS bacteria ANSWER :B

Discussion

4.	Question : Phragmoplast is derived from
Answer» SPINDLE APPARATUS Spindle FRAGMENTS CELL plate Middle lamellum Answer :B

Discussion

5.	Question : Photosystem II has the trap centre known as P_(680)
Answer» ANSWER :1

Discussion

6.	Question : Photosystem II occurs in
Answer» STROMA CYTOCHROME Grana thylakoids Mitochondrial SURFACE Solution :PHOTOSYSTEM II occurs in grana thylakoids.

Discussion

7.	Question : Photosynthetically active radiation (PAR) represents the following range of wavelength
Answer» 450-950 nm 340-450 nm 400-700 nm 500-600 nm Answer :C

Discussion

8.	Question : Photosynthetic roots are seen in :
Answer» Vanda Tinospora Cuscuta Viscum Answer :B

Discussion

9.	Question : Photosynthetic pigments absorb visible part of radiation (380 mmu to 760 mmu ).
Answer» Solution :Pigments like chlorophyll absorbs BLUE and RED LIGHT and PLANTS show HIGH rate of photosynthesis in blue and red light.

Discussion

10.	Question : Photosynthetic part of the phaeophyceae thallus is called as …………………… .
Answer» HOLDFAST STIPES LAMINA FRONDS ANSWER :D

Discussion

11.	Question : Photosynthetic enhancement with flashing light was first observed by
Answer» BENSON and Calvin Hill and Calvin Hatch and Slack Emerson and Arnold Solution :PHOTOSYNTHETIC enhancement with flashing LIGHT was first observed by Emerson and Arnold.

Discussion

12.	Question : Photosynthetic organisms occur at different depths in the ocean. Do they receive qualitatively and quantitatively the same light ? How do they adapt to carry out photosynthesis under these conditions ?
Answer» Solution :Generally algae are found at various DEPTHS in the OCEAN. These is diversity found in thei PHOTOSYNTHETIC pigments which can absorb light of various wave lenghts and can perform photo synthesis. e.g, : algae (GREEN Algae) Chlorophyll-a (red light is absorbed) and Chlorophyll-b (absorbs violet light) BROWN Algae : Chlorophyll-a, c and Fucoxanthin (absorbs yellow light). Red algae : Chlorophyll-d and phycoerythrin.

Discussion

13.	Question : Photosynthetic organisms use only ____ of incident solar light on earth.
Answer» `0.2` `0.6` `0.1` `0.8` ANSWER :A

Discussion

14.	Question : Photosynthetic active radiation (PAR) has the following range of wavelengths
Answer» `400-700 NM` `450-950 nm` `340-450 nm` `500-600 nm` ANSWER :A

Discussion

15.	Question : Photosynthesis protects us from harmful ultraviolet radiaion of sun comment on the statement.
Answer» Solution :1. MANY plants use a group of CHEMICALS called sinapate esters to defend against the sum. These aromatic compounds are found in the upper cell layers of PLANT tissues and sinapoyl MALATE provides bulk of the UV protection. 2. Thus when the green LEAV

Discussion

16.	Question : PhotosyntheticallyActive Radiation (PAR) is between ……… .
Answer» 400-700nm 450-920 nm 340-450 nm 500-600nm Solution :400-700nm

Discussion

17.	Question : Photosynthesis is processed by which green plants trap .......... energy and convent itinto .............
Answer» SOLUTION :SOLAR, CHEMICAL,

Discussion

18.	Question : Photosynthesis is correctly explained by the equation
Answer» `6 CO _(2) + 12 H _(2) O to C _(6) H _(12) O _(6) + 6 O _(2) + 6 H _(2)O` `6 CO _(2) + 6 H _(2) O to C _(6) H_(12) O _(6) + 6 O _(2) + 6 H _(2) O` `6 CO _(2) + 6 H _(2) O to C_(6) H _(12) O_(6) + 6 O _(2)` `2 CO _(2) + 12 H _(2) O to C_(6) H_(12) O _(6) + 2O _(2)` ANSWER :A

Discussion

19.	Question : 'Photosynthesis is a redox reaction ''. Comment .
Answer» SOLUTION :Photosynthesisis an oxidationand reductions process where ,water is oxidisedto RELEASE oxgyenand `CO_(2)`is reducedto from carbohydrates .

Discussion

20.	Question : Photosynthesis is correcly explained by the equation
Answer» `6 CO_2` + `12H_2O` RARR`C_6H_12O_6` + `6O_2` + `6H_2O` `6 CO_2` + `6H_2O` rarr `C_6H_12O_6` + `6O_2` + `6H_2` `6CO_2` + `6H_2O`rarr `C_6H_12O_6` + `6O_2` `2CO_2` + `12H_2O` rarr `C_6H_12O_6` + `2CO_2` ANSWER :A

Discussion

21.	Question : Photosynthesis is a complex metabolic process.
Answer» Solution :The process of photosynthesis takes place in chloroplast, light reaction takes place in GRANA in chloroplast. ATP and NADPH are formed during it. The USE of both these substance is done is FIXATION of `CO_(2)`. During that time glucose is formed after CALVIN cycle process. Thus metabollic process is a construction process.

Discussion

22.	Question : Photosynthesis in C_4 plants is relatively less limited by atmospheric carbon dioxide levels because
Answer» Four carbon acids are the primary initial carbon dioxide FIXATION products the primary Fixation of carbon dioxide is mediated VIA PEP caroxylase effective pumping of `CO_2` into BUNDLE sheath cells Rubisco in `C_4` plants has higher AFFINITY for `CO_2` Answer :B

Discussion

23.	Question : Photosensitivity in Euglena is due to
Answer» FLAGELLUM paraflagellar BODY and stigma chromatophores METABOLY ANSWER :B

Discussion

24.	Question : Photorespiration poses threat to plants yet it occurs in angiosperms. Why?
Answer» SOLUTION :Many angiospermic plants bear only one type of CHLOROPLASTS and `CO_2` ACCEPTOR is RuBP in these cases. Thus there is no other possibility except to undergo `C_2` pathway which may ULTIMATELY lead to PHOTORESPIRATION.

Discussion

25.	Question : Photorespiration involves
Answer» only mitochondria mitochondria and PEROXISOMES only peroxisomes mitochondria, peroxisomes and chloroplast Answer :D

Discussion

26.	Question : Photorespiration does not take place in C_(4) plants.
Answer» SOLUTION :The sugar formation process occurs in LEAVES of monocot plantas like sugarcane GROWING in tropicl zones in which first product is fused with 4C pathway. The MECHANISM of these plants is as such that it increases the concentration of `CO_(2)` at the enzyme site. So its productivity is increased by RuBisCO, MOREOVER `O_(2)` is prevented to enter into the cells of bundle sheath so there is no possibility of photorespiration lying in it.

Discussion

27.	Question : Photopic vision : conecells :: scotopic vision : .........
Answer» SOLUTION :INNER LAYER

Discussion

28.	Question : Photoperiodism is due to hormone
Answer» florigen GA 2,4-D cytokinin

Discussion

29.	Question : Photochemical reactions in the chloroplasts are directly involved in
Answer» FIXATION of carbon dioxide synthesis of GLUCOSE and starch formation of phosphoglyceric acid photolysis of WATER and phosphorylation of ADP to ATP Answer :D

Discussion

30.	Question : Photo respiration is absent in
Answer» Maize Sorghum `C_(4)` plants All of these Answer :D

Discussion

31.	Question : Phosphorylation of glucose during glycolysis is catalysed by (A) Phosphoglucomutase (B) Phosphoglucoisomerase (C) Hexokinase (D) Phosphorylase
Answer» Phosphoglucomutase Phosphoglucoisomerase Hexokinase Phosphorylase ANSWER :A::C

Discussion

32.	Question : Phosphorylationtakingplaceduringrespiaritonis called ………. .
Answer» Substratelevel phosphorylation OXIDATIVEPHOSPHORYLATION Reductive phosphorylation PHOTOPHOSPHORYLATION Answer :B

Discussion

33.	Question : Phosphorylated nitrogenous compounds are a part of
Answer» GLYCOLIPIDS Nucleolipids Phospholipids All the above Answer :C

Discussion

34.	Question :Phosphorus is a structural element in
Answer» NUCLEIC acids carbohydrates proteins lipids Answer :A

Discussion

35.	Question : Phosphorus deficiency in plants causes:
Answer» premature leaf fall purple ANTHOCYANIN pigmentation older leaves EXHIBIT DEFICIENCY SYMPTOMS first all of the above Answer :D

Discussion

36.	Question :Phospholipid named lecithin is found in component of........... (A) Plasmalemma (B) Cell wall (C) Middle lamella (D) Nuclear membrane
Answer» Plasmalemma Cell wall Middle lamella Nuclear membrane Answer :A

Discussion

37.	Question : Phosphoenol pyruvate (PEP) is the primary CO_(2) acceptor in ______
Answer» `C_(3)` PLANTS `C_(4)` plants `C_(2)` plants `C_(3) and C_(4)` plants Solution :`C_(4)` plants

Discussion

38.	Question : Phosophodiester bond is formed between
Answer» `3^(1)` carbon and `5^(1)` carbon of sugar in a nucleotide `5^(1)` carbon and `3^(1)` carbon of sugar in a nucleotide `3^(1)` carbon of sugar of one nucleotide and `5^(1) - C` of sugar of ANOTHER nucleotide All the above Answer :C

Discussion

39.	Question : Pholem parenchyma is absent in
Answer» PEA MAIZE HIBISCUS Datura Answer :B

Discussion

40.	Question : phloem sap is mainly made of
Answer» water and sucrose water and minerals oligosaccharides and hormones sucrose only. Solution :Phloem SAP CONSISTS primarily of water with sugars (sucrose) dissolved in it . It FLOWS from the source or supply end (region of manufacture or STORAGE) to the region of utilisation or sink.

Discussion

41.	Question : Phloem fibres are called as :
Answer» FIBRE TRACHEIDS BEST fibres Libriform fibres Gelatinous fibres Answer :B

Discussion

42.	Question : phixx-174 bacteriophage has
Answer» SINGLE STRAND DNA DOUBLE strand RNA Double strand DNA Single strand RNA Answer :A

Discussion

43.	Question : Phloem does not have parenchyma in
Answer» MONOCOT STEM DICOT stem Dicot ROOT Dicot leaf Answer :A

Discussion

44.	Question : Phenomenon which converts light energy into chemical energy is
Answer» respiration photosynthesis transpiration none of these Answer :B

Discussion

45.	Question : Phenolic acids : seed dormancy :: low temperature :
Answer» SOLUTION :VERNALIZATION

Discussion

46.	Question : Phellois are
Answer» SYNONYMS of phellem LIGNIFIED cork CELLS Suberized cork cells Non-suberzed cork cells Answer :D

Discussion

47.	Question : Phellogen is primary cambium.
Answer» SOLUTION :Phellogen DEVELOPS from cortex so it is SECONDARY in ORIGIN

Discussion

48.	Question : Phellogen arises from ………………………………………..., in dicot roots.
Answer» ENDODERMIS PILIFEROUS layer PERICYCLE Periderm Solution :Pericycle

Discussion

49.	Question : Phellogen arises from . . . . . . . , in dicot roots.
Answer» Endodermis Piliferous LAYER PERICYCLE Periderm Answer :C

Discussion

50.	Question : Phellogen and phellem respectively denote …………… and …………..
Answer» SOLUTION :CORK CAMBIUM , cork

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : Phycoreythrin pigment is found in

Question : Phylloclade :

Question : Phycology is the study of ………

Question : Phragmoplast is derived from

Question : Photosystem II has the trap centre known as P_(680)

Question : Photosystem II occurs in

Question : Photosynthetically active radiation (PAR) represents the following range of wavelength

Question : Photosynthetic roots are seen in :

Question : Photosynthetic pigments absorb visible part of radiation (380 mmu to 760 mmu ).

Question : Photosynthetic part of the phaeophyceae thallus is called as …………………… .

Question : Photosynthetic enhancement with flashing light was first observed by

Question : Photosynthetic organisms occur at different depths in the ocean. Do they receive qualitatively and quantitatively the same light ? How do they adapt to carry out photosynthesis under these conditions ?

Question : Photosynthetic organisms use only ____ of incident solar light on earth.

Question : Photosynthetic active radiation (PAR) has the following range of wavelengths

Question : Photosynthesis protects us from harmful ultraviolet radiaion of sun comment on the statement.

Question : PhotosyntheticallyActive Radiation (PAR) is between ……… .

Question : Photosynthesis is processed by which green plants trap .......... energy and convent itinto .............

Question : Photosynthesis is correctly explained by the equation

Question : 'Photosynthesis is a redox reaction ''. Comment .

Question : Photosynthesis is correcly explained by the equation

Question : Photosynthesis is a complex metabolic process.

Question : Photosynthesis in C_4 plants is relatively less limited by atmospheric carbon dioxide levels because

Question : Photosensitivity in Euglena is due to

Question : Photorespiration poses threat to plants yet it occurs in angiosperms. Why?

Question : Photorespiration involves

Question : Photorespiration does not take place in C_(4) plants.

Question : Photopic vision : conecells :: scotopic vision : .........

Question : Photoperiodism is due to hormone

Question : Photochemical reactions in the chloroplasts are directly involved in

Question : Photo respiration is absent in

Question : Phosphorylation of glucose during glycolysis is catalysed by (A) Phosphoglucomutase (B) Phosphoglucoisomerase (C) Hexokinase (D) Phosphorylase

Question : Phosphorylationtakingplaceduringrespiaritonis called ………. .

Question : Phosphorylated nitrogenous compounds are a part of

Question :Phosphorus is a structural element in

Question : Phosphorus deficiency in plants causes:

Question :Phospholipid named lecithin is found in component of........... (A) Plasmalemma (B) Cell wall (C) Middle lamella (D) Nuclear membrane

Question : Phosphoenol pyruvate (PEP) is the primary CO_(2) acceptor in ______

Question : Phosophodiester bond is formed between

Question : Pholem parenchyma is absent in

Question : phloem sap is mainly made of

Question : Phloem fibres are called as :

Question : phixx-174 bacteriophage has

Question : Phloem does not have parenchyma in

Question : Phenomenon which converts light energy into chemical energy is

Question : Phenolic acids : seed dormancy :: low temperature :

Question : Phellois are

Question : Phellogen is primary cambium.

Question : Phellogen arises from ………………………………………..., in dicot roots.

Question : Phellogen arises from . . . . . . . , in dicot roots.

Question : Phellogen and phellem respectively denote …………… and …………..