Chapter 30 Plants

Question 1

angiosperm

Answer 1

A flowering plant, which forms seeds inside a protective chamber called an ovary.

Question 2

gymnosperm

Answer 2

A vascular plant that bears naked seeds—seeds not enclosed in protective chambers.

Question 3

Seed

Answer 3

An adaptation of some terrestrial plants consisting of an embryo packaged along with a store of food within a protective coat.

Question 4

pollination

Answer 4

The transfer of pollen to the part of a seed plant containing the ovules, a process required for fertilization.

Question 5

Pollen

Answer 5

a fine powdery substance, typically yellow, consisting of microscopic grains discharged from the male part of a flower or from a male cone. Each grain contains a male gamete that can fertilize the female ovule, to which pollen is transported by the wind, insects, or other animals.

Question 6

heterosporous

Answer 6

Referring to a plant species that has two kinds of spores: microspores, which develop into male gametophytes, and megaspores, which develop into female gametophytes.

Question 7

megaspore

Answer 7

A spore from a heterosporous plant species that develops into a female gametophyte.

Question 8

Microspores

Answer 8

A spore from a heterosporous plant species that develops into a male gametophyte.

Question 9

homosporous

Answer 9

Referring to a plant species that has a single kind of spore, which typically develops into a bisexual gametophyte.

Question 10

micropyle

Answer 10

A pore in the integuments of an ovule.

Question 11

megasporangium

Answer 11

the structure in certain spore-bearing plants in which the megaspores are formed: corresponds to the ovule in seed plants.

Question 12

pollen tube

Answer 12

A tube that forms after germination of the pollen grain and that functions in the delivery of sperm to the ovule.

Question 13

Fertilization

Answer 13

occurs when the sperm meets the egg

Question 14

Gymnosperms

Answer 14

Vascular seed plants with “naked”seeds (not surrounded by a fruit)

Question 15

Sporophytes

Answer 15

produce seeds in cones

Question 16

Gametophyte (book)

Answer 16

In organisms (plants and some algae) that have alternation of generations, the multicellular haploid form that produces haploid gametes by mitosis. The haploid gametes unite and develop into sporophytes.

Question 17

Gametophyte (presentation)

Answer 17

Male = pollen/Female = inside cone scale.

Question 18

Sporophyll (book)

Answer 18

A modified leaf that bears sporangia and hence is specialized for reproduction.

Question 19

Sporophyll (presentation)

Answer 19

modified leaf with sporangia

Question 20

Strobilus (cone) (presentation)

Answer 20

groups of sporophylls

Question 21

Strobilus (book)

Answer 21

The technical term for a cluster of sporophylls known commonly as a cone, found in most gymnosperms and some seedless vascular plants.

Question 22

What do Cycadophyta have

Answer 22

HUGE central strobili/Palm-like leaves/High diversity 250mya - 65mya, but low diversity today (300species)/ Have Flagellated sperm!/Highly endangered group

Question 23

what do Ginkgophyta have

Answer 23

• A single living species: Ginkgobiloba* Cones often mistaken for fruit* High tolerance to air pollution* Popular ornamental tree* Flagellated Sperm!

Question 24

What do Gnetophyta have

Answer 24

Diverse appearance/Possess vessel elements/Only three genera left today: 1. Gnetum (angiosperm like) 2. Ephedra (Ephedrine source )3. Welwitschia (huge leaves, lives a thousand years

Question 25

What do Coniferophyta have

Answer 25

Largest and most diverse gymnosperm subclass (600 species)/Most conifers are evergreens

Question 26

What are conifers?

Answer 26

Dominant plants in boreal forests (northern hemisphere)/Conifer forests = world’s largest terrestrial carbon sink/Used greatly for lumber and paper.