Unit 1 - Lesson 4: The Classification Of Plants

Question 1

What type of plants are Bryophyta?

Answer 1

Non-vascular plants

Bryophyta includes mosses, liverworts, and hornworts.

Question 2

How do Bryophyta survive cold or dry periods?

Answer 2

By holding water like a sponge

Question 3

What structures do Bryophyta use instead of roots?

Answer 3

Rhizoids

Question 4

What are the two forms in the life cycle of Bryophyta?

Answer 4

Gametophyte and sporophyte

Question 5

Which form is longer-lasting in Bryophyta?

Answer 5

Gametophyte

Question 6

What benefits do Bryophyta provide to ecosystems?

Answer 6

Nutrient cycling and other benefits

Question 7

What potential use do Bryophyta have in medicine?

Answer 7

Source for pharmaceuticals

Question 8

What type of plants are Pteridophyta?

Answer 8

Seedless vascular plants

Question 9

Which stage of the life cycle is dominant in Pteridophyta?

Answer 9

Sporophyte

Question 10

What do vascular tissues in Pteridophyta allow them to do?

Answer 10

Grow taller

Question 11

How long do gametophytes of Pteridophyta typically live?

Answer 11

Only short periods of time

Question 12

Where are Pteridophyta often found?

Answer 12

On the forest floors of Canada’s temperate forests

Question 13

How are spores produced in Pteridophyta?

Answer 13

By meiosis

Question 14

How are gametes produced in Pteridophyta?

Answer 14

By mitosis

Question 15

What are some examples of Pteridophyta?

Answer 15

• Whisk ferns
• Club mosses
• Horsetails
• Ferns

Question 16

What type of plants are Gymnosperms?

Answer 16

Seed-producing vascular plants

Question 17

Where are seeds located in Gymnosperms?

Answer 17

Exposed on the surface of cone scales

Question 18

What types of plants are included in Gymnosperms?

Answer 18

• Conifers
• Cycadophytes
• Ginkgophytes

Question 19

How do Gymnosperms transport sperm nuclei?

Answer 19

Using pollen grains and the wind

Question 20

What happens when sperm nuclei are released on female cones in Gymnosperms?

Answer 20

The eggs are fertilized

Question 21

What are some examples of Gymnosperms?

Answer 21

• Pine tree
• Fir trees
• Spruce tree
• Redwood tree

Question 22

What are angiosperms?

Answer 22

Seed producing vascular plants that reproduce using flowers and have seeds in a fruit.

Angiosperms make up 90% of all plants, with about 250,000 species.

Question 23

What percentage of all plants do angiosperms make up?

Answer 23

90%

This includes approximately 250,000 species.

Question 24

How do many angiosperms reproduce?

Answer 24

Using small non-colourful flowers that rely on wind for pollen transport.

This is similar to the reproduction method of conifers.

Question 25

What attracts animal pollinators to some angiosperms?

Answer 25

Big and vibrant flowers with exotic patterns, food rewards, and odours. ## Footnote These features encourage animal pollination.

Question 26

What are the male and female parts of an angiosperm flower?

Answer 26

Male parts are called stamen and female parts are called pistil.

Question 27

How do fruits aid in seed dispersal?

Answer 27

Fruits disperse seeds when they are eaten by animals and excreted elsewhere or by burs sticking to fur. ## Footnote This method facilitates the distribution of seeds.

Question 28

What is a cotyledon?

Answer 28

A structure in the embryo that nourishes the plant in its early stages.

Question 29

How many cotyledons do monocots have?

Answer 29

One cotyledon.

Question 30

Describe the vascular tissue arrangement in the roots of monocots.

Answer 30

Arranged in a ring.

Question 31

How are vascular bundles arranged in the stem of monocots?

Answer 31

Scattered throughout the ground tissue.

Question 32

How do leaf veins run in monocots?

Answer 32

Parallel to each other along the length of the leaf.

Question 33

How many parts do monocot flowers typically have?

Answer 33

3 parts or multiples of 3.

Question 34

What type of root system do monocots typically have?

Answer 34

Fibrous root system.

Question 35

Give two examples of monocots.

Answer 35

* Orchid * Asparagus * Banana tree * Lily

Question 36

How many cotyledons do dicots have?

Answer 36

Two cotyledons.

Question 37

Describe the vascular tissue arrangement in the roots of dicots.

Answer 37

Arranged in an X or star shape.

Question 38

How are vascular bundles arranged in the stem of dicots?

Answer 38

Arranged in a distinct ring.

Question 39

How do leaf veins run in dicots?

Answer 39

Palmate or pinnate.

Question 40

How many parts do dicot flowers typically have?

Answer 40

4 or 5 parts or multiples of 4 or 5.

Question 41

What type of growth allows dicots to have wood?

Answer 41

Secondary growth.

Question 42

What type of root system do dicots typically have?

Answer 42

Taproot root system.

Question 43

Give two examples of dicots.

Answer 43

* Olive tree * Cactus * Coffee * Strawberry * Rose