What IS A PLANT????? Flashcards Preview

Life Science > What IS A PLANT????? > Flashcards

Flashcards in What IS A PLANT????? Deck (26):
1

Chlorophyll

Green pigment found in the chloroplasts of plants, algae, and some bacteria

2

Photosynthesis

During photosynthesis a plant uses carbon dioxide gas and water

3

Chloroplasts

The structure in which food is made

4

Tissues

Groups of similar cells that perform a specific function in an organism

5

Vacuole

A large storage sac that can expand and shrink

6

Cuticle

Helps a plant reduce water loss

7

Vascular tissue

A system of tubelike structures inside a plant through which water, minerals, and food move

8

Sporophyte

A stage in which the plant produces spores

9

Gametophyte

A stage in which the plant produces to kinds of sex cells: sperm and egg cells

10

Annual

Flowering plants that complete a life cycle within one growing season

11

Biennial

Angiosperms that complete there life cycle in 2 years

12

Perennial

Flowering plants that live for more than 2 years

13

Fertilization

Occurs when a sperm cell unites with an egg cell

14

Zygote

The fertilized egg

15

Cone

Reproductive structures that are usually covered with scales. Most gymnosperm have these

16

Ovule

A structure that contains an egg cell

17

Fruit

The ripened ovary and other structures that enclose one or more seeds

18

Tropism

A plants growth response toward or away from a stimulus

19

Hormone

A chemical that affects how the plant grows and develops

20

Auxin

Speeds up the rate at which a plant's cells grow and controls a plant

21

Photoperiodism

A plants response to seasonal changes in the length of night and day

22

Critical night length

The number of hours of darkness that determines whether or not a plant will flower

23

Short-day plant

Flower when the nights are longer than a critical length. They bloom in winter or fall

24

Long-day plant

Flower when nights are shorter than a critical length. They bloom in spring or summer

25

Day-neutral plant

Have a flowering cycle that is not sensitive to periods of light and dark. They can bloom all year round, depending on weather

26

Dormancy

A period when an organism's growth or activity stops