STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
MORPHOLOGY OF FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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pumpkin
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watermelon
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grapevines
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Bougainvillea
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Detailed explanation-1: -Citrus and Bougainvillea contain thorns that originate from the axillary bud of a stem that provides protection. Watermelon, cucumber, and pumpkin have modified axillary buds that form thin, wiry, leafless, and spirally coiled branches and it helps the weak plant to climb the support referred to as stem tendrils.
Detailed explanation-2: -Pisum and Lathyrus don’t show stem tendrils.
Detailed explanation-3: -Common examples of tendril-producing plants are the grape, members of the squash or melon family (Cucurbitaceae), the sweet pea (Lathyrus odoratus), and the passionflowers (Passiflora species).
Detailed explanation-4: -In Bougainvillea, thorns are the modifications of stem in which axillary buds of stems get modified into woody, straight and pointed thorns. These thorns protect the plants from browsing animals.
Detailed explanation-5: -Examples – Sweet peas, Wild peas and Gloriosa. Stem tendrils can be axillary tendrils, extra axillary tendrils, floral bud tendrils and apical bud tendrils.