Q21
In Bougainvillea thorns are the modifications of :
Correct Answer
Option B
Solution
(b) Thorns in Bougainvillea are modified stems for protection.
Morphology of Flowering Plants
Q22
What is eye of potato?
Correct Answer
Option A
Solution
(a) Eyes of potato are axillary buds at nodes.
Q23
Velamen is found in
Correct Answer
Option D
Solution
(d) Velamen is a spongy tissue on aerial roots of orchids for moisture absorption.
Q24
Roots of which plant contains an oxidising agent?
Correct Answer
Option B
Solution
(b) Soyabean roots contain leghaemoglobin, an oxygen-scavenging pigment.
Q25
Plants which produce characteristic pneumatophores and show vivipary belong to:
Correct Answer
Option A
Solution
(a) Halophytes in saline soils show vivipary and have pneumatophores.
Q26
Pneumatophores occur in
Correct Answer
Option A
Solution
(a) Pneumatophores are negatively geotropic roots in halophytes (mangroves) for gaseous exchange.
Q27
Edible part of banana is
Correct Answer
Option B
Solution
(b) Edible part of banana is fleshy mesocarp and rudimentary endocarp.
Q28
Epipetalous stamens with free filaments and fused anthers occur in
Correct Answer
Option A
Solution
(a) Asteraceae: epipetalous stamens with free filaments, syngenesious (fused) anthers.
Q29
Hypanthodium is
Correct Answer
Option C
Solution
(c) Hypanthodium is a special flask-shaped inflorescence, e.g., Ficus (fig).
Q30
Floral features are chiefly used in Angiosperms identification because
Correct Answer
Option C
Solution
(c) Reproductive parts are more stable and less affected by environment than vegetative parts.
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