APSC Botany MCQs with Answers | Botany Questions for PSC Exams | GkSeries

61 Which of the following does not have a pith?
1 Protostele
2 Solenostele
3 Siphonostele
4 Dictyostele

Answer: Protostele
62 Coralloid roots occur in
1 Cycas
2 Pinus
3 Gnetum
4 Ephedra

Answer: Cycas
63 Cycas ovule is
1 anatropous
2 orthotropous
3 hemianatropous
4 campylotropous

Answer: orthotropous
64 Pinus differs from angiosperm in
1 tree habit
2 green leaves
3 presence of wood
4 ovules without an enclosing ovaiy

Answer: ovules without an enclosing ovaiy
65 The female gametophyte of Gnetum is
1 monosporic
2 bisporic
3 trisporic
4 tetrasporic

Answer: tetrasporic
66 The fossil organisms which show characters of two different groups of animals are called
1 transitional forms
2 missing links
3 transitory organisms
4 past links

Answer: missing links
67 Linnaeus' system of classification is
1 artificial system
2 natural system
3 phylogenetic system
4 synthetic system

Answer: artificial system
68 Spikelets with glumes are found in
1 Cyperaceae
2 Poaceae
3 Arecaccae
4 Araceae

Answer: Poaceae
69 Allium cepa belongs to
1 Musaceae
2 Arecaceae
3 Brassicaceae
4 Liliaceae

Answer: Liliaceae
70 The botanical name of sunflower is
1 Hetianthus annuus
2 Helianthus tuberosus
3 Tagetes patula
4 Tagetes erecta

Answer: Hetianthus annuus
71 Osmotic pressure of a solution is usually measured in
1 kelvin
2 joule
3 pascal
4 newton

Answer: pascal
72 Root pressure is developed in
1 xylem
2 phloem
3 cortex
4 pith

Answer: xylem
73 Which one of the following theories for ascent of sap was proposed by Sir J. C. Bose?
1 Pulsation theory
2 Root pressure theory
3 Relay pump theory
4 Transpiration pull theory

Answer: Pulsation theory
74 When the plant cells are fully turgid, the turgor pressure is equal and opposite to the
1 diffusion pressure deficit
2 osmotic pressure
3 wall pressure
4 diffusion pressure

Answer: wall pressure
75 Conduction of sap in plants occurs through
1 heartwood
2 bark
3 xylem
4 cortex

Answer: xylem