Unit 3 Spermatophyta

Question 1

Plants with naked seeds are called

Answer 1

Gymnosperms

Question 2

Which is the dominant generation in spermatophytes

Answer 2

Sporophyte

Question 3

Sporophyte of spermatophytes are

Answer 3

Heterosporous

Question 4

Microspore ________ and megaspore ______

Answer 4

Pollen grain
The embryo sac

Question 5

The fertilised ovule forms

Answer 5

Seed

Question 6

Male gametes are conveyed to the ovule by

Answer 6

Pollen tube

Question 7

Firs, pines, yews spruces and redwood are examples of

Answer 7

Gymnospermae

Question 8

The seed of gymnosperms lies on specialised leaf called

Answer 8

Ovuliferous scale

Question 9

Xylem of gymnosperms is made of

Answer 9

Tracheids thereby producing soft wood

Question 10

______ is commonly grown in nigeria for electric poles and furniture

Answer 10

Pinus sp

Question 11

The dominant plants of the world today are

Answer 11

Angiospermae/anthophyta

Question 12

Unique features of angoisperms are

Answer 12

Flower and fruit

Question 13

The fruit develops from

Answer 13

The ovary of a flower

Question 14

Seeds develop from

Answer 14

Fertilised ovule

Question 15

Floral leaves include

Answer 15

Sepals, petals, stamens amd carpels

Question 16

Based on number of seed leaves, angiosperms are divided into

Answer 16

Monocotyledons
Dicotyledons

Question 17

Vascular cambium gives rise to _____ growth

Answer 17

Secondary growth

Question 18

________ have the largest underground gametophyte

Answer 18

Psilophytes

Question 19

Development of cuticle prevents

Answer 19

Excess loss of water

Question 20

Root system aids

Answer 20

Anchorage and efficient absorption