Flowers MCQ Quiz - Multiple Choice Questions & Answers Page 21

201. ....................................are the reproductive organs of the plant.

1. Flowers
2. Leaves
3. Seeds
4. Roots

202. ................................is responsible for cell division and differentiation.

1. chlorophyll
2. cytokins
3. carbon dioxide
4. enzymes

203. ................................is the best glazing materials for the production of greenhouse crops.

1. glass
2. retractable roofing
3. polyethylene
4. metal

204. ............................are devices used to automatically turn greenhouse systems on or off.

1. energy curtains
2. automatic on/off switches
3. power switches
4. environmental controls

205. ............................is the ability of seeds to germinate under different conditions and still produce healthy seedlings.

1. viability
2. pollination
3. vigor
4. hybrid

206. ............................regulate water vapor loss in the leaf.

1. spongy mesosphyll
2. guard cells
3. inclusive membranes
4. stomata

207. ........................are naturally occurring chemicals produced by plants to ........................growth.

1. hormones, regulate
2. leaves, stems
3. cells, reduce
4. cuttings, root

208. ........................ranks as the third most popular cut flower in the world.

1. Roses
2. Snapdragons
3. Carnations
4. none of the above

209. ....................has changed the import/ export side of the floriculture industry.

1. air travel
2. lighting
3. telephones
4. space travel

210. ....................regulations is defined as any chemical or process used to produce a specific type of growth response, such as inhibition of internode elongation or root development.

1. Plant Growth
2. Tissue Culture
3. Abscisic acid
4. Root development