Multiple Choice QuestionsTricarpellary, syncarpous gynoecium is found in flowers of
Solanaceae
Fabaceae
Poaceae
Poaceae
Which of the following is not a stem modification?
thorns of citrus
tendrils of cucumber
Flattened structures of Opuntia
Flattened structures of Opuntia
Stems modified into flat green organs performing the functions of leaves are known as
phyllodes
phylloclades
scales
scales
The standard petal of papilionaceae corola is also called
pappus
vexillum
corona
corona
Among bitter gourd mustard, brinjal, pumpkin, China rose, lupin, cucumber, sunn hemp, gram, guava, bean, chilli, plum, Petunia, potato tomato, rose, With potato, onion, aloe and tulip, how many plants have hypogynous flower?
Six
Ten
Fifteen
Fifteen
In China rose the flowers are
actinomorphic, hypogynous with twisted aestivation
actinomorphic, epigynous with valvate aestivation
zygomorphic, hypogynous with imbricate aestivation
zygomorphic, hypogynous with imbricate aestivation
A.
actinomorphic, hypogynous with twisted aestivation
Actinomorphic (star-shaped) can be divided into 3 or more identical sectors, which are related to each other by rotation about the centre of the flower, e.g., china rose. Zygomorphic flowers can be divided by only a single plane into two mirror-image halves., e.g., orchids.
Valvate aestivation: The sepals or petals in whorl just touch one another at the margin, e.g., Calotropis.
Twisted aestivation: One margin of the appendage overlaps that of the next one, e.g., china rose. Imbricate aestivation the margins of sepals or petals overlap but not necessarily in a specific direction. e.g cassia.
Read the different components from I to IV in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem:
(a) Secondary cortex
(b) Wood
(c) Secondary phloem
(d) Phellem
The correct order is
(c), (d), (b), (a)
(a), (b), (d), (c)
(d), (a), (c), (b)
(d), (a), (c), (b)
The wheat grain has an embryo with one large, shield-shaped cotyledon known as
Epiblast
Coleorrhizia
Scutellum
Scutellum
Switch
