Free MCQs & Online Quiz Practice for Exams

Q: Attraction of water molecules to the xylem vessels is: (ETEA 2012)

A) Adhesion

B) Cohesion

C) Collision

D) Corrosion

Q: Tobacco is a: (ETEA 2012)

A) Long-day plant

B) Short-day plant

C) Day-neutral plant

D) Intermediate plant

Q: Ripening of fruits can be promoted by: (ETEA 2012)

A) Gibberellic acid

B) Indole acetic acid

C) Florigen

D) Ethylene

Q: Gibberellin was isolated from: (ETEA 2012)

A) An alga

B) A fungus

C) A bacterium

D) A virus

Q: Concentration of water molecules is inversely proportional to the: (ETEA 2012)

A) Water potential

B) Pressure potential

C) Solute potential

D) Osmotic potential

Q: Auxin inhibits the growth of: (ETEA 2012)

A) Apical buds

B) Lateral buds

C) Parthenocarpy

D) Root growth

Q: An organism that adopts saprophytic mode of nutrition during part of its life is called: (ETEA 2013+2010)

A) Facultative saprophyte

B) Facultative parasite

C) Obligate saprophyte

D) Obligate parasite

Q: Premature death of plants is caused by deficiency of: (ETEA 2013)

A) Magnesium

B) Iron

C) Phosphorus

D) Potassium

Q: Bulliform cells are present in: (ETEA 2013)

A) Grasses

B) Underground stems

C) Fruit-nuts

D) Cabbage leaves

Q: A hormone that prevents senescence in leaves is: (ETEA 2013)

A) Auxin

B) Gibberellins

C) Cytokinin

D) Abscisic acid

Q: Florigen is produced by: (ETEA 2013)

A) Flowers

B) Flower buds

C) Leaves

D) Fruits

Q: The phenomenon that a seed fails to germinate despite suitable conditions is called: (ETEA 2013)

A) Photoperiodism

B) Vernalization

C) Dormancy

D) Phytochrome

Q: Pulvinus tissues are present at: (ETEA 2013)

A) Leaf-tip

B) Leaf-margin

C) Leaf-base

D) Middle-vein

Q: Shade-loving plants are called: (ETEA 2014)

A) Helophytes

B) Mesophytes

C) Sciophytes

D) Xerophytes

Q: The temperature required for vernalization is: (ETEA 2014)

A) 2 °C

B) 3 °C

C) 4 °C

D) 10 °C

Q: The response of a plant related to the length of the day and night is called: (ETEA 2014)

A) Photoreceptor

B) Phototaxis

C) Phototropism

D) Photoperiodism

Q: Select the mineral that is considered a macronutrient: (ETEA 2015)

A) Phosphorus

B) Zinc

C) Iron

D) Iodine

Q: A hormone that helps in growing seedless grapes: (ETEA 2015)

A) Auxins

B) Cytokinin

C) Ethylene

D) Gibberellins

Q: Phytochrome Pr absorbs red light of wavelength … (ETEA 2015)

A) 600 nm

B) 660 nm

C) 560 nm

D) 730 nm

Q: Vernalization is the conversion of: (ETEA 2015)

A) Spring variety → winter variety

B) Winter variety → spring variety

C) Winter variety → summer variety

D) Summer variety → winter variety