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Botany Questions and Answers for Competitive Exams SSC UPSC Railways | GkSeries

46 White rust of crucifers is caused by
1 Puccinia
2 Ustilago
3 cystocarp
4 Peziza

Answer: cystocarp
47 Clamp connection is common in
1 Ascomycetes
2 Basidiomycetes
3 Phycomycetes
4 Deuteromycetes

Answer: Basidiomycetes
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48 The term 'mycorrhiza' was coined by
1 Frank
2 Beijerinck
3 Campbell
4 Ivanovsky

Answer: Frank
49 In lichen, the type of symbiotic process is known as
1 heliotism
2 symbiotism
3 halotrophy
4 heliotrophy

Answer: heliotism
50 Which of the following is used in baking of bread?
1 Rhizopus stolonifer
2 Saccharomyces cerevisiae
3 Claviceps
4 Penicillium notatum

Answer: Saccharomyces cerevisiae
51 Covered smut of barley is caused by
1 Ustilago nuda
2 Ustilago tritici
3 Ustilago hordei
4 Ustilago graminis

Answer: Ustilago hordei
52 Green mould is common name for
1 Neurospora
2 Mucor
3 Penicillium
4 Saccharomyces

Answer: Penicillium
53 The most economically important bryophyte among the following is
1 Funaria
2 Marchantia
3 Riccia
4 Sphagnum

Answer: Sphagnum
54 Gemma cups are found in
1 Sphagnum
2 Marchantia
3 Riccia
4 Anthoceros

Answer: Marchantia
55 Pseudoelaters are found in the sporophyte of
1 Marchantia
2 Pellia
3 Polytrichum
4 Anthoceros

Answer: Anthoceros
56 Rhizoids of Sphagnum are
1 unicellular
2 green-coloured
3 unicellular with septa
4 multicellular with oblique septa

Answer: multicellular with oblique septa
57 The common element in the xylem of pteridophyte is
1 trachea
2 tracheid
3 xylem parenchyma
4 xylem fibre

Answer: tracheid
58 Protocorm is found in
1 Lycopodium
2 Selaginella
3 Equisetum
4 Marsilea

Answer: Lycopodium
59 The stele in the rhizome of Marsilea is
1 pro to stele
2 haplostele
3 dictyostele
4 amphiphloic siphonostele

Answer: amphiphloic siphonostele
60 Formation of sporophyte from a vegetative portion of prothallus is called
1 apocarpy
2 apogamy
3 apomixis
4 apospoiy

Answer: apogamy

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