Coiling 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

The floral formula  is that of

• tulip

• soybean

• sun hemp

• sun hemp

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

An example of axile placentation is 

• Argemone 

• Dianthus

• Lemon

• Lemon

A fruit developed from hypanthodium inflorescence is called

• hesperidium 

• sorosis

• syconus

• syconus

The correct floral formula of soybean is

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

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