Multiple Choice QuestionsCoiling of garden pea tendrils around any support is an example of
thigmotaxis
thigmonasty
thigmotropism
thigmotropism
Which one of the following is a xerophytic plant in which the stem is modified into the flag green and succulent structure?
Opunita
Casuarina
Hydrilla
Hydrilla
Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous by
the absence of secondary xylem
the absence of secondary phloem
the presence of cortex
the presence of cortex
A fruit developed from hypanthodium inflorescence is called
hesperidium
sorosis
syconus
syconus
Dry indehiscent single-seeded fruit formed from bicarpellary syncarpous inferior ovary is
Caryopsis
cypsela
Adiantum
Adiantum
The fleshy receptacle of syconus of fig encloses a number of
achenes
samaras
berries
berries
A.
achenes
Syconus is a composite fruit develops from the hypanthodium inflorescence, eg, Ficus carica, Ficus Benghalensis. The flask-shaped receptacle encloses female flowers that give rise to achene - like fruits. This fruit possesses a small pore protected by scaly leaves. THe receptacle that becomes fleshy is edible.
Samara is a single-seeded, dry indehiscent fruit. Its pericarp becomes membranous and flat-like wings that help in dispersal, eg Ulmus Holoptelia indica.
Which one of the following scientist's name is correctly matched with the theory put forth by him?
Weissmann-Theory of continuity of germplasm
Pasteur - Inheritance of acquired characters
de Vries - Natural selection
de Vries - Natural selection
is that of
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