All the florets may be disc in
1.Tridax
2.Helianthus
3.Launea
4.Vernonia
All the florets may be ligulate
1.Ageratum
2.Vernonia
3.Launaea
4.Tridax
An example for decumbent herb is
1.Artemesia maritima
2.Tridax procumbens
3.Vernonia arborea
4.Launeae
Asteraceae is classified under the subclass
1.Inferae
2.Gamopetalae
3.Rosales
4.Polypetalae
Disc florets are also called as
1.Tubular florets
2.Ligulate florets
3.Ray florets
4.Florets
Heterogamous head inflorescence consists of
1.Ray florets only
2.Disc florets only
3.Ray and Disc florets
4.No florets
Heterogamous head is seen
1.Helianthus annus
2.Zinnia elegans
3.Calendula officinalis
4.Launaea
Homogamous head has
1.Ligulate florets
2.Tubular florets
3.Both kind of florets
4.Either ligulate or tubular florets
In Asteraceae inflorescence is
1.Solitary cyme
2.Raceme
3.Spike
4.Capitulum
In habitat Asteraceae are
1.Mesophytes
2.Xerophytes
3.Both Xerophytes and Mesophytes
4.Hydrophytes
Launea is a
1.Sucker
2.Tree
3.Climber
4.Runner
Leaves of Asteraceae are
1.Simple
2.Pinnately or Palmately lobed
3.Compound
4.All the three
Leaves of Asteraceae are
1.Alternate
2.Opposite
3.Whorled
4.All the three kinds
Number of genera included under Asteraceae
1.375
2.283
3.950
4.6
Number of genera of Asteraceae found in South India
1.35
2.45
3.55
4.65
Number of species included under Asteraceae
1.10000
2.20000
3.30000
4.40000
Number of species of Asteraceae found in South India
1.100
2.200
3.300
4.400
Opposite phyllotaxy is seen in
1.Launaea
2.Eupatorium
3.Tridax
4.Chrysanthemum
Plants of Asteraceae are seen in
1.Tropical countries
2.Temperate countries
3.Subtropical countries
4.World wide
Receptacle in Asteraceae is
1.Flat
2.Convex
3.Concave
4.All the three types
Root tubers are present in the genus
1.Tridax
2.Eupatorium
3.Dahlia
4.Vernonia
Roots and Stems contain oil-ducts in
1.Fabaceae
2.Euphorbiaceae
3.Asteraceae
4.Musaceae
Roots of Asteraceae are
1.Adventitious
2.Tuberous
3.Without nodules
4.Aerial
Stem is a sucker in
1.Dahlia
2.Vernonia
3.Chrysanthemum
4.Launaea
The head is reduced to a single flower in
1.Echinops
2.Helianthus
3.Tridax
4.Chrysanthemum
The largest family of flowering plants is
1.Fabaceae
2.Asteraceae
3.Euphorbiaceae
4.Musaceae
Type of inflorescence in Asteraceae
1.Homogenous head
2.Heterogenous head
3.Both 1 and 2
4.Spadix
Vernonia shevrayensis is a
1.Root tuber
2.Tree
3.Climber
4.Shrub
Whorled phyllotaxy is seen in
1.Eupatorium
2.Launaea
3.Tridax
4.Dahlia