Morphology of Flowering Plants

Biologically most resistant plant material is

• sporopollenin

• cutin

• lignin

• suberin

Coconut's husk fibre, coir of commerce is extracted from

• epicarp

• mesocarp

• endocarp

• all of these

Assertion: Photomodulation of flowering is a phytochrome - regulated process.

Reason: Active form of phytochrome (Pfr) directly induces floral induction in shoot buds.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false.

Cotton belongs to family :

• Solanaceae

• Cucurbitaceae

• Leguminoseae

• Malvaceae

Assertion: The epithelial layer of scutellum of maize is both secretory and absorptive in function.

Reason: The epithelial layer secretes hormones into the endosperm for the synthesis of food
solubilising enzymes and also absorbs and transfers the solubiliscd food to embryo axis.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false.

Assertion: Deficiency of sulphur causes chlorosis in plants.

Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acids.

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false.

From which part of Cocos nucifera, coir is obtained :

• Endocarp

• Mesocarp

• Epicarp

• Any part of fruit

Which floral family has (9) + 1 arrangement or anthers in the androecium ?

• Malvaceae

• Rutaceae

• Fabaceae

• Caesalpinaceae

Assertion: Ginger has a prostrate-growing rhizome.

Reason: Shoot growth is not effected by gravity

• If both Assertion and Reason are true and Reason is the correct explanation of Assertion

• If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

• If Assertion is true but Reason is false

• If both Assertion and Reason are false.

Clove is a

• floral bud

• modified root

• auxillary bud

• seed