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100

What cuts a fruit from the stem?

Abscission layer

100

A young woody stem stores water in soft, thin-walled cells at its center.

Pith

100
What is the chief factor determining when a plant flowers?

Length of day/night

100
What is the primary purpose of flowers?

Seed production

100
What is the process of a new plant growing from a root, stem, or leaf of an existing plant?

Vegetative reproduction

200

what is the tough outer covering of a herbaceous monocot stem?

Rind

200
What part of the flower produces pollen?

Anther

200

What part of a flower covers and protects the rest of the flower during development?

Sepal

200

What are the small openings in a stem's bark that allow air to enter the stem?

Lenticels

200

What type of reproduction is when the sperm and egg cells unite?

Sexual reproduction

300

What is the first step of fertilization?

Formation of pollen tube

300

What are the structures of a plant embryo that contain stored food to supply energy needed for sprouting?

Cotelydons

300

What are the tiny, tubelike projections that extend from the epidermal cells of a root to absorb water and minerals?

Root hairs

300
What is the older, inner wood of a stem that serves only as supports for the stem?

Heartwood

300

What surrounds and nourishes the developing plant embryo?

Endosperm

400
What is the section of a twig between nodes?

Internodes

400

What are the alternating patterns formed in a woody stem by distinct layers of springwood and summerwood?

Growth rings

400

What are the special roots that grow from unusual regions of a plant?

Adventitious roots

400

What is it when a plant responds to light?

Phototropism

400

What are reproductive cells, such as egg cells and sperm cells?

Gametes

500

What type of dispersal is exemplified when the wind disperses the seeds?

Agent dispersal

500

Where is the food within the root stored?

Cortex

500
What is the part of the seed's embryo that will develop into the root system of the new plant?

Radicle

500
What consists of an outer fleshy layer and inner papery core?

Pome

500
What is another name for xylem tissue?

Wood

600

What is it when the entire fruit is fleshy and juicy throughout?

Berry

600

What are roots that penetrate the soil deeply with relatively little branching?

Taproots

600

What are produced by plants of the grass family?

Grains

600

What consists of a pod enclosing several seeds?

Legume

600

What is the stalk that attached the leaf to the stem?

Petiole

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