Plant Growth & Development Test

Which are naturally occurring chemicals that regulate all growth and development of plants?

• Plant Hormones

• Synthetic Growth Regulators

Which are growth hormones that are produced by the apical meristem?

• Gibberelins

• Auxins

• Cytokins

• Etiolations

Which is a response by a plant to grow toward a light source?

• Thigmotropism

• Gravitropism

• Phototropism

Which is a hormone that inhibits growth?

• Abscisic Acid

• Ethylene

Which plant hormone stimulates flower bud initiation?

• Etiolations

• Cytokins

• Gibberelins

• Ethylene

What is a hormone that helps fruit ripen?

• Gibberelins

• Etiolation

• Tropism

• Ethylene

A situation in which the middle stem grows at a greater rate, suppressing the side growth:

• Tropism

• Apical Dominance

The outer cover that protects the seed is

• scar

• seed coat

• embryo

• stem

A seed needs __________, __________ and a __________ to germinate.

• soil, water, air

• suitable temperature, water, sunlight

• air, water, suitable temperature

• water, air, sunlight

Which part is labelled A?

• Seed coat

• Embryo

• Cotyledon

• Seedbryo