When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as
vexillary
imbricate
twisted
twisted
B.
imbricate
Imbricate aestivation is the arrangements five petals being arranged in such a way that one petal is completely external and being another petal is completely internal, while three petals are partially external and partially internal,
e.g, Cassia, Callistemon and Caesalpinia
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
Vexillary aestivation is characteristic of the family
Fabaceae
Asteraceae
Solanaceae
Solanaceae
Which one of the following shows isogamy with non-flagellated gametes?
Sargassum
Ectocarpus
Ulothrix
Ulothrix
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
Plants with ovaries having only one or a few ovules, are generally pollinated by
Bees
Butterflies
Birds
Birds
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
