Multiple Choice Questions

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An obligate root parasite is

  • Rafflesia

  • Loranthus

  • Viscum

  • Striga


A.

Rafflesia

Obligate parasites are organisms that obtain their food from host throughout their life, egRafflesia, Orobanche (root parasite).

Facultative parasites are organism which are parasitic but can obtain their food from dead organic matter under certain conditions.

Obligate root parasite Rafflesia, Orobanche etc

Partial root parasite Viscum, Loranthus etc

Obligate stem parasite Santalum

Partial stem parasite Cuscuta


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Chicory powder which is mixed with coffee powder is obtained from

  • root

  • leaf

  • stem

  • seeds


Botanical name of 'chana' is

  • Cicer arietinum

  • Phaseolus aureus

  • Lablab purpureus

  • Dolichos


Clinging roots are found in

  • orchids

  • Trapa

  • Podostemon

  • screwpine


Pappus is modified

  • calyx

  • corolla

  • bracts

  • gynoecium


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Stem cuttings are commonly used for the proprogation of

  • banana

  • rose

  • mango

  • cotton


Trimerous flower, superior ovary and axile placentation is characteristics of

  • Liliaceae

  • Cucurbitaceae

  • Solanaceae

  • Compositae


Edible part in 'sorosis', a composite fruit, is

  • cotyledons

  • endosperm

  • perianth and peduncle

  • fleshy thalamus


Lady finger belongs to family

  • Malvaceae

  • Cucurbitaceae

  • Liliaceae

  • Brassiaceae


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Which of the following is a true nut?

  • Walnut

  • Cashewnut

  • Groundnut

  • Pistachio


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