Chapter 5, Lesson 2

Question 1

What is a seed plant that produces naked seeds called?

Answer 1

A gymnosperm

Question 2

Why are the seeds of a gymnosperm referred to as “naked”?

Answer 2

Because they are not enclosed by protective fruit.

Question 3

What do you many Gymnosperms have?

Answer 3

Many gymnosperms have needle like or scale like leaves, and deep growing root systems.

Question 4

What are the oldest type of seed plants?

Answer 4

Gymnosperm

Question 5

What are the four groups of gymnosperms that exist today?

Answer 5

Cycads, conifers, ginkgoes, and gnetophytes

Question 6

Where do cycads grow and what do they look like?

Answer 6

Cycads grow mainly in tropical and subtropical areas. They look like palm trees with cones. An example is a sago palm.

Question 7

What are the largest and most diverse group of gymnosperms today?

Answer 7

Conifers

Question 8

What is a characteristic of conifers and give an example of a conifer?

Answer 8

They keep their leaves or needles year round. An example is a Pine tree.

Question 9

Why are sequoia trees so big and so old?

Answer 9

One reason why sequoia trees are so big and have lived so long is because their bark is fire resistant.

Question 10

How many species of Ginkgoes are there today?

Answer 10

One…. Ginkgo Biloba

Question 11

Where do ginkgo trees grow today’s date why?

Answer 11

They are planted along city streets because they can tolerate air pollution.

Question 12

Where do gnetophytes live?

Answer 12

They live in hot deserts and in tropical rain forests.

Question 13

What do gnetophytes fight look like?

Answer 13

Some are trees, some are shrubs, and others are vines.

Question 14

What are the reproductive structures that most gymnosperms have called?

Answer 14

Cones

Question 15

What are the two types of cones that gymnosperms produce?

Answer 15

Male cones and female cones

Question 16

What do male cones produce the later become sperm cells?

Answer 16

Pollen

Question 17

What is the structure of the female cone called that contains the egg cell?

Answer 17

Ovule

Question 18

Where is the ovule located in the female cone?

Answer 18

Female cones contain one audio at the base of each scale.

Question 19

What is the process of gymnosperm reproduction?

Answer 19

1) Pollen falls from a male cone onto a female cone
2) A sperm cell and an egg cell join together in an ovule on the female cone
3) After fertilization occurs, the seed develops on the scale of the female cone

Question 20

What is the transfer of pollen from a male reproductive structure to a female reproductive structure called?

Answer 20

Pollination

Question 21

How does the pollen get from the male cone to the female cone?

Answer 21

Wind

Question 22

Once pollination has occurred what happens?

Answer 22

The ovule closes and seals in the pollen. The scales also close and the sperm cell fertilizes the egg cell inside each ovule.

Question 23

Do the female cones and male cones stay on the tree during reproduction?

Answer 23

Female cones remain on the tree while the seeds mature. Male cones, however, usually fall off the tree after they have shed their pollen.

Question 24

After the seeds are mature, what happens?

Answer 24

The scales open, the wind shakes the seeds out of the cone and carries them away.

Question 25

Other than paper and wood what are two other products that come from conifers?

Answer 25

The rayon fibers in clothes as well as the cellophane wrappers on some food products.

Question 26

What are two products made from the sap of conifers?

Answer 26

Turpentine and rosin

Question 27

What is a managed forest?

Answer 27

Adult trees planted in a forest to then be cut down and used for products. After the adult trees are cut, young trees are planted to replace them. Since different parts of the forest are usually cut at different times, there are always adult trees that can be harvested.