Multiple Choice QuestionsWhich 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.
B.
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
Rhizome are prostrate, thickened stem, creeping horizontally under the surface of the soil. The common example is ginger. It is provided short node and distinct internodes. It bears
some scaly leaves at the nodes, possesses a bud in the axil of the scaly leaf and ends in a terminal bud. The response of plant to wards gravity is called geotropism. The roots are positively geotropic and grow downwards, while the shoot is negatively geotropic and grows away from the gravitational pull from the centre of earth. Parts which show no effect of gravity are called ageotropic.
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
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.
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