NEET Biology MCQ- Botany Questions (25-50)

 26. Which one of the following plants shows vexillary aestivation and diadelphous stamens?

(1) Allium cepa

(2) Solanum nigrum

(3) Colchicum autumnale

(4) Pisum sativum

27. DNA polymorphism forms the basis of

(1) Both genetic mapping and DNA finger printing

(2) Translation

(3) Genetic mapping

(4) DNA finger printing


28. What amount of energy is released from glucose during lactic acid fermentation?

(1) About 10%

(2) Less than 7%

(3) Approximately 15%

(4) More than 18%


29. Identify the correct set of statements :

(a) The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea

(b) Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin

(c) Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves

(d) Rhizophora shows vertically upward growing roots that help to get oxygen for respiration

(e) Subaerially growing stems in grasses and strawberry help in vegetative propagation

Choose the correct Ans: from the options given below :

(1) (b), (c), (d) and (e) Only

(2) (a), (b), (d) and (e) Only

(3) (b) and (c) Only

(4) (a) and (d) Only


30. Which one of the following statements cannot be connected to Predation?

(1) Both the interacting species are negatively impacted

(2) It is necessitated by nature of maintain the ecological balance

(3) It helps in maintaining species diversity in a community

(4) It might lead to extinction of a species


31. Given below are two statements :

Statement I :

Cleistogamous flowers are invariably autogamous

Statement II :

Cleistogamy is disadvantageous as there is no chance for cross pollination

In the light of the above statements, choose the correct answer from the options given below :

(1) Statement I is correct but Statement II is incorrect

(2) Statement I is incorrect but Statement II is correct

(3) Booth Statement I and Statement II are correct

(4) Both Statement I and Statement II are incorrect


32. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants :

(1) Ethylene

(2) Cytokinin

(3) ABA

(4) Gibberellin


33. Match List -I with List - II

List –I                                        List -II

(a) Manganese                        (i) Activates the enzyme catalase

(b) Magnesium                       (ii) Required for pollen germination

(c) Boron                               (iii) Activates enzymes of respiration

(d) Iron                                 (iv) Function in splitting of water during photosynthesis

Choose the correct answer from the options given below :

(1) (a)-(vi), (b)-(i), (c)-(ii), (d)-(iii)

(2) (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

(3) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

(4) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)


34. Which one of the following never occurs during mitotic cell division?

(1) Pairing of homologous chromosomes

(2) Coiling and condensation of the chromatids

(3) Spindle fibres attach to kinetochores of chromosomes

(4) Movement of centrioles towards opposite poles


35. The gaseous plant growth regulator is used in plants to :

(1) help overcome apical dominance

(2) kill dicotyledonous weeds in the fields

(3) speed up the malting process

(4) promote root growth and root hair formation to increase the absorption surface


36. Match the plant with the kind of life cycle it exhibits:

List-I                                         List-II

(a) Spirogyra (i) Dominant diploid sporophyte vascular plant, with highly

reduced male or female gametophyte

(b) Fern (ii) Dominant haploid free-living gametophyte

(c) Funaria (iii) Dominant diploid sporophyte alternating with reduced

gametophyte called prothallus

(d) Cycas (iv) Dominant haploid leafy gametophyte alternating with

partially dependent multicellular sporophyte

Choose the correct answer from the options given below :

(1) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

(2) (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

(3) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

(4) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)


37. Which part of the fruit, labelled in the given figure makes it a false fruit?

(1) C → Thalamus

(2) D → Seed

(3) A → Mesocarp

(4) B → Endocarp


38. Which one of the following will accelerate phosphorus cycle?

(1) Weathering of rocks

(2) Rain fall and storms

(3) Burning of fossil fuels

(4) Volcanic activity


39. Match List-I with List-II.

List-I                                                        List-II

(a) Metacentric chromosome (i) Centromere situated close to the end forming one extremely short and one very long arms

(b) Acrocentric chromosome (ii) Centromere at the terminal end

(c) Submetacentric (iii) Centromere in the middle forming two equal arms of

chromosomes

(d) Telocentric chromosome (iv) Centromere slightly away from the middle forming one shorter arm and one longer arm

Choose the correct Ans: from the options given below :

(1) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

(2) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

(3) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

(4) (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)


40. The anatomy of springwood shown some peculiar features. Identify the correct set of statements about springwood.

(a) It is also called as the earlywood

(b) In spring season cambium produces xylem elements with narrow vessels

(c) It is lighter in colour

(d) The springwood along with autumn wood shown alternate concentric rings forming annual rings

(e) It has lower density

Choose the correct answer from the options given below :

(1) (a), (b) and (d) Only

(2) (c), (d) and (e) Only

(3) (a), (b), (d) and (e) Only

(4) (a), (c), (d) and (e) Only

Ans: (4)

41. Given below are two statements : one is labelled as

Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Mendel’s law of Independent assortment does not hold good for the genes that are located

closely on the same chromosome.

Reason (R) : Closely located genes assort independently.

In the light of the above statements, choose the correct Ans: from the options given below:

(1) (A) is correct but (R) is not correct

(2) (A) is not correct but (R) is correct

(3) Both (A) and (R) are correct and (R) is the correct explanation of (A)

(4) Both (A) and (R) are correct but (R) is not the correct explanation of (A)

 

42. Read the following statements on lipids and find out correct set of statements:

(a) Lecithin found in the plasma membrane is a glycolipid

(b) Saturated fatty acids possess one or more c = c bonds

(c) Gingelly oil has lower melting point, hence remains as oil in winter

(d) Lipids are generally insoluble in water but soluble in some organic solvents

(e) When fatty acid is esterified with glycerol, monoglycerides are formed

Choose the correct answer from the option given below:

(1) (c), (d) and (e) only

(2) (a), (b) and (d) only

(3) (a), (b) and (c) only

(4) (a), (d) and (e) only


43. What is the role of large bundle sheath cells found around the vascular bundles in C4 plants?

(1) To enable the plant to tolerate high temperature

(2) To protect the vascular tissue from high light intensity

(3) To provide the site for photorespiratory

(4) To increase the number of chloroplast for the operation of Calvin cycle


44. In the following palindromic base sequences of DNA, which one can be cut easily by particular restriction enzyme?

(1) 5'CTCAGT3; 3GAGTCA5'

(2) 5'GTATTC3; 3CATAAG5'

(3) 5'GATACT3; 3CTATGA5'

(4) 5'GAATTC3; 3CTTAAG5'


45. The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?

(1) It is cheaper than diesel

(2) It can not be adulterated like diesel

(3) CNG burns more efficiently than diesel

(4) The same diesel engine is used in CNG buses making the cost conversion low


46. Addition of more solutes in a given solution will :

(1) make its water potential zero

(2) not affect the water potential at all

(3) raise its water potential

(4) lower its water potential


47. Transposons can be used during which one of the following ?

(1) Autoradiography

(2) Gene sequencing

(3) Polymerase Chain Reaction

(4) Gene Silencing


48. While explaining interspecific interaction of population, (+) sign is assigned for beneficial interaction, (–) sign is assigned for detrimental interaction and (0) for neutral interaction. Which of the following interactions can be assigned (+) for one specifies and (–) for another specifies involved in the interaction ?

(1) Commensalism

(2) Competition

(3) Predation

(4) Amensalim


49. If a geneticist uses the blind approach for sequencing the whole genome of an organism, followed by assignment of function to different segments, the methodology adopted by him is called as :

(1) Expressed sequence tags

(2) Bioinformatics

(3) Sequence annotation

(4) Gene mapping


50. Which of the following occurs due to the presence of autosome linked dominant trait ?

(1) Haemophilia

(2) Thalessemia

(3) Sickle cell anaemia

(4) Myotonic dystrophy


Answers:
26. (4) Pisum sativum
27. (1) Both genetic mapping and DNA finger printing
28. (2) Less than 7%
29. (1) (b), (c), (d) and (e) Only
30. (1) Both the interacting species are negatively impacted
31. (3) Booth Statement I and Statement II are correct
32. (1) Ethylene
33. (4) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
34. (1) Pairing of homologous chromosomes
35. (4) promote root growth and root-hair formation to increase the absorption surface
36. (4) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
37. (1) C → Thalamus
38. (1) Weathering of rocks
39. (3) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
40. (4) (a), (c), (d) and (e) Only
41.(1) (A) is correct but (R) is not correct
42. (1) (c), (d) and (e) only
43. (4) To increase the number of chloroplast for the operation of Calvin cycle
44. (4) 5'GAATTC3; 3CTTAAG5'
45. (4) The same diesel engine is used in CNG buses making the cost conversion low
46. (4) lower its water potential
47. (3) Polymerase Chain Reaction
48. (3) Predation
49. (3) Sequence annotation
50.(4) Myotonic dystrophy

© NEET Biology: Medical Entrance Biology Questions and Answers, AllRightsReserved.

Maintained by Biology Exams 4 U