Botany Short Questions and Answers

Questions

41 Cell organelle covered by single unit membrane is:

A Peroxisomes

B Lysosome

C Glyoxisome

D All of these

View Answer

Answer: All of these

42 Blue-green alga that causes red blooms is:

A Anabaena

B Gleacapsa

C Trichodesmium

D Nostoc

View Answer

Answer: Trichodesmium

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43 Prokaryotic genetic material is:

A Circular DNA without his tones

B Liner DNA without his tones

C Liner DNA + his tones

D Circular DNA + his tones

View Answer

Answer: Circular DNA without his tones

44 Abscission layer developed during leaf fall is made of:

A Parenchymatous cells

B Cork cells

C Sclerenchymatous cells

D Sclerenchymatous cells

View Answer

Answer: Parenchymatous cells

45 Gingerly oil (till) is got from:

A Sesamum indicum

B Linus usitatissimum

C Cocos nucifera

D Brassica rapa

View Answer

Answer: Sesamum indicum

46 In meios-I, the Centro mere undergoes:

A Division but the daughter chromosomes do not separate

B Division between prophase and metaphase

C Division between anaphase and Interphase

D No division

View Answer

Answer: No division

47 Morphine is obtained from:

A Papaver somniferum

B Rauwolffia serpentine

C Aconitum nacelles

D Cinchona officinalis

View Answer

Answer: Papaver somniferum

48 Coir of commerce is obtained from:

A Endocarp of coconut

B Mesocarp of coconut

C Stem of jute

D Leaves of coconut

View Answer

Answer: Leaves of coconut

49 The components of an ecosystem are:

A Trees and weeds

B Plants and animals

C Man and plants

D Biotic and abiotic

View Answer

Answer: Biotic and abiotic

50 The 10% energy transfer law of food chain was given by

A Lindmann

B Lederberg

C Weismann

D Lindley

View Answer

Answer: Lindmann

51 Double fertilization is found in:

A Angiosperms

B Bryophytes

C Gymnosperms

D Pteridophytes

View Answer

Answer: Angiosperms

52 The term water potential was proposed by:

A Slatyer and Taylor

B Godlewski

C Dixon and Jolly

D J. C. Bose

View Answer

Answer: Slatyer and Taylor

53 A plant having two types of haploid structures in its life cycle is known as:

A Haplobiontic

B Diplobiontic

C Haplontic

D Diplontic

View Answer

Answer: Haplobiontic

54 A chain of amino acids joined by peptide bonds is called as

A Peptide chain

B Polypeptide chain

C Polyamino acid chain

D Nucleotide chain

View Answer

Answer: Polypeptide chain

55 Root cap is not found n:

A Mesophytes

B Hydrophytes

C Xerophytes

D Halophytes

View Answer

Answer: Xerophytes

56 The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to Purchase fresh hybrid seed every year because:

A Hybrid vigour is not long standing due to inbreeding depression

B They are not allowed to grow their own seed

C It is always associated with 4ncreased heterozygosity

D Government has accepted Dunkel’s proposals

View Answer

Answer: Hybrid vigour is not long standing due to inbreeding depression

57 Fragrant flowers with well developed nectarines are an adaptation for:

A Anemophily

B Ornithophily

C Entamophily

D Hydrophily

View Answer

Answer: Entamophily

58 Soil salinity is measured by:

A Potometer

B Porometer

C Conductivity meter

D Calorimeter

View Answer

Answer: Conductivity meter

59 The scutellum of the gram embryo is a:

A Vestigial organ

B Photosynthetic organ

C Absorptive organ

D Protective organ

View Answer

Answer: Vestigial organ

60 The genes, which remain confined to differential region of ‘Y’ chromosome, are:

A Autosomal genes

B Holandric genes

C Sex linked genes

D Mutant genes

View Answer

Answer: Holandric genes

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