Keel is the characteristic feature of flower of

(1) tulip

(2) Indigofera

(3) Aloe

(4) tomato

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The wheat grain has an embryo with one large, shield-shaped cotyledon known as

(1) epiblast

(2) coleorrhiza

(3) scutellum

(4) coleoptile

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In ginger vegetative propagation occurs through

(1) rhizome

(2) offsets

(3) bulbils

(4) runners

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Plants, which produce characteristic pneumatophores and show vivipary belong to

(1) mesophytes

(2) halophytes

(3) psammophytes

(4) hydrophytes

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Root hairs develop from the region of

(1) maturation

(2) elongation

(3) root cap

(4) meristematic activity

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In Bougainvillea thorns are the modifications of

(1) stipules

(2) adventitious root

(3) stem

(4) leaf

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Coconut fruit is a

(1) drupe

(2) berry

(3) nut

(4) capsule

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The term 'polyadelphous' is related to 

(1) gynoecium

(2) androecium

(3) corolla

(4) calyx

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How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, raddish, gram and turnip have stamens with different lengths in their flowers?

(1) Three

(2) Four

(3) Five

(4) Six

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Radial symmetry is found in the flowers of 

(1) Brassica

(2) Trifolium

(3) Pisum

(4) Cassia

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