Unit 3 Bio study guide

Front

What structure delivers sperm to the ovule in angiosperms?

Back

Pollen tube

Front

According to the ABC hypothesis, which gene combination forms stamens?

Back

B + C

Front

What hormone promotes fruit ripening and leaf abscission?

Back

Ethylene

Front

What is the role of nitrogen-fixing bacteria?

Back

Convert atmospheric nitrogen into ammonia

Front

Which type of growth increases the thickness of stems and roots?

Back

Secondary growth

Front

What is the function of petals in flowering plants?

Back

Attract pollinators and protect reproductive structures.

Front

What is the role of auxins in plant growth?

Back

Promote cell elongation and regulate growth responses.

Front

What is the significance of the style in angiosperms?

Back

It connects the stigma to the ovary and facilitates pollen tube growth.

Front

What is the function of the anther in flowering plants?

Back

It produces and releases pollen.

Front

What is the role of cytokinin in plants?

Back

Promote cell division and delay leaf senescence.