Multiple Choice Questions

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Vexillary aestivation is characteristic of the family

  • Fabaceae

  • Asteraceae

  • Solanaceae

  • Solanaceae


A.

Fabaceae

Vexillary aestivation of corolla is a characteristic of family - Papilionaceae in which corolla (petals) are papilionaceous. In papilionaceous corolla, the posterior petal called vexillum is largest, two lateral, curved petals are called wings and two anterior, boat-shaped petals are called keels.

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How many plants in the list given below have composite fruits that develop from an inflorescence?
Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry

  • Four

  • Five

  • Two

  • Two

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Which one of the following shows isogamy with non-flagellated gametes?

  • Sargassum

  • Ectocarpus

  • Ulothrix

  • Ulothrix

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How many plants in the list given below have marginal placentation?
Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin

  • Four

  • Five

  • Six

  • Six

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Plants with ovaries having only one or a few ovules, are generally pollinated by

  • Bees

  • Butterflies

  • Birds

  • Birds

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Keel is the characteristic feature of flower of

  • Tulip

  • Indigofera

  • Aloe

  • Aloe

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Cuscuta is an example of

  • ectoparasitism

  • brood parasitism

  • predation

  • predation

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When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

  • vexillary

  • imbricate

  • twisted

  • twisted

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 is the floral formula of
  • Allium

  • Sesbania

  • Petunia

  • Petunia

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Which one of the following organisms is correctly matched with its three characteristics?

  • Pea: C3 pathway, Endospermic seed, Vexillary aestivation

  • Tomato: Twisted aestivation, Axile placentation, Berry

  • Onion: Bulb, Imbricate aestivation, Axile placentation

  • Onion: Bulb, Imbricate aestivation, Axile placentation

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