Comprehensive Plant Biology Study Guide

Which hormone promotes cell division and shoot development?

• Auxin

• Cytokinin

• Gibberellin

• Abscisic acid

What structure connects the leaf blade to the shoot?

• Stomata

• Vein

• Petiole

• Lamina

Which hormone delays leaf senescence?

• Auxin

• Cytokinin

• Abscisic acid

• Ethylene

What is the main stalk that supports the entire inflorescence?

• Petiole

• Peduncle

• Stamen

• Sepal

Which hormone maintains seed dormancy and inhibits growth?

• Gibberellin

• Abscisic acid

• Auxin

• Cytokinin

What is the first step in seed germination where water is absorbed?

• Photosynthesis

• Imbibition

• Transpiration

• Respiration

Which hormone promotes cell elongation, especially in shoots?

• Gibberellin

• Auxin

• Cytokinin

• Abscisic acid

What part of the plant does the petiole connect?

• It connects the flower to the root

• It attaches the leaf blade to the stem

• It joins the fruit to the branch

• It links the seed to the soil

Which hormone originates in the roots and travels upward through the xylem?

• Auxin

• Cytokinin

• Gibberellin

• Abscisic acid

What structure marks the transition between the stem and the inflorescence?

• Axillary bud

• Terminal node

• Leaf blade

• Root cap