Study Guide for Unit 3-Chapter 2

Flashcards created for key concepts from Unit 3-Chapter 2 on plant biology.

A biological response of a plant to changes in the proportion of light and dark within a 24-hour cycle is called __.

Photoperiodism

The male reproductive structures of a flower are known as __.

Stamens

The loss of water vapor by plants through stomata is referred to as __.

Transpiration

The female reproductive structures of a flower are called __.

Pistil

The breaking down of food molecules by cells into usable energy is known as __.

Cellular respiration

The leaflike structures that cover and protect the immature flower are called __.

Sepals

Plant movements that are not related to the direction of the stimulus are known as __.

Nastic movements

The structure that contains the egg cell of a seed plant is called __.

Ovule

Regular rhythms of growth and activity that occur in approximately 24-hour cycles are known as __.

Circadian rhythms

The tip of the pistil is called the __.

Stigma

The dustlike particles that carry the sperm cells of seed plants are called __.

Pollen

The growth of a plant toward a light source is referred to as __.

Phototropism

The often brightly colored parts of a flower are known as __.

Petals

The long, slender part of the pistil is called the __.

Style

An organism in its earliest stages of development is known as an __.

Embryo

The process by which plants make food is called __.

Photosynthesis

The movements that are not related to the direction of the stimulus are referred to as __.

Nastic movements

The movement of materials throughout a plant is known as __.

Transport