Questions on Seed Plants
Multiple-Choice Questions: Seed Plants
1. What distinguishes seed plants from seedless plants?
A) Use of chloroplasts
B) Production of spores only
C) Production of seeds for reproduction
D) Presence of rhizoids
E) Absence of vascular tissue
2. The two main groups of seed plants are:
A) Bryophytes and ferns
B) Angiosperms and gymnosperms
C) Algae and mosses
D) Ferns and mosses
E) Liverworts and hornworts
3. Which structure in seed plants contains the embryo?
A) Spore
B) Anther
C) Seed
D) Ovary
E) Stigma
4. Gymnosperms differ from angiosperms because they:
A) Do not have seeds
B) Produce spores instead of seeds
C) Produce seeds not enclosed in fruits
D) Reproduce only by cuttings
E) Lack vascular tissue
5. The part of the seed that provides nourishment to the developing embryo is called:
A) Cotyledon
B) Seed coat
C) Ovule
D) Pollen
E) Xylem
6. Which of the following is a gymnosperm?
A) Fern
B) Oak tree
C) Pine tree
D) Tulip
E) Grass
7. In angiosperms, seeds are enclosed within a:
A) Cone
B) Leaf
C) Fruit
D) Root
E) Rhizome
8. The male gametophyte in seed plants is called:
A) Anther
B) Pollen grain
C) Ovule
D) Stigma
E) Embryo
9. Which part of a seed plant becomes the seed coat?
A) Ovule
B) Pollen
C) Endosperm
D) Ovary
E) Outer layer of the ovule
10. What adaptation allows seed plants to reproduce without water?
A) Xylem
B) Spores
C) Pollen
D) Guard cells
E) Chlorophyll
11. Which of the following is not a characteristic of seed plants?
A) Vascular tissue
B) Seeds
C) Flowers in all species
D) Pollen
E) Multicellular embryos
12. The function of pollen is to:
A) Anchor the plant
B) Absorb nutrients
C) Produce energy
D) Deliver sperm cells to the ovule
E) Produce cotyledons
13. Double fertilization occurs in:
A) Mosses
B) Gymnosperms
C) Ferns
D) Angiosperms
E) Algae
14. Which of the following structures becomes a fruit after fertilization in angiosperms?
A) Ovule
B) Sepal
C) Ovary
D) Anther
E) Petal
15. What is a cotyledon?
A) A type of root
B) The outer layer of the seed
C) The part of the embryo that stores nutrients
D) A pollen grain
E) A structure in gymnosperms only
16. Most conifers are classified as:
A) Monocots
B) Dicots
C) Ferns
D) Gymnosperms
E) Bryophytes
17. Which of the following is true about monocots?
A) Have two cotyledons
B) Have parallel leaf veins
C) Have taproots
D) Are all gymnosperms
E) Have flower parts in fours or fives
18. What is the role of the seed coat?
A) Photosynthesis
B) Attracting pollinators
C) Protecting the embryo
D) Supporting the flower
E) Producing food
19. In gymnosperms, where are the seeds typically located?
A) In fruits
B) On the surface of cones
C) Inside flowers
D) Within ovaries
E) Under the leaves
20. In which structure does fertilization take place in seed plants?
A) Stigma
B) Pollen tube
C) Ovule
D) Style
E) Xylem
21. Angiosperms are the most successful group of plants mainly due to:
A) Lack of vascular tissue
B) Use of spores
C) Production of flowers and fruits
D) Wind pollination only
E) Simple reproductive cycles
22. Which plant part often helps disperse seeds in angiosperms?
A) Anther
B) Pollen
C) Sepal
D) Fruit
E) Stem
23. The ovule develops into which part after fertilization?
A) Pollen
B) Fruit
C) Seed
D) Flower
E) Leaf
24. Which structure connects the stigma to the ovary in a flower?
A) Anther
B) Filament
C) Petal
D) Style
E) Cotyledon
25. Which of the following best explains why seed plants can colonize dry environments?
A) They absorb water through their leaves
B) They don't need roots
C) They rely on swimming sperm
D) They produce spores
E) They use pollen and seeds instead of needing water for fertilization
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Answer Key with Explanations
1. C – Seed plants reproduce using seeds, unlike seedless plants.
2. B – The two main seed plant groups are angiosperms and gymnosperms.
3. C – The seed houses and protects the embryo.
4. C – Gymnosperms have "naked seeds" not enclosed in fruit.
5. A – Cotyledons store or absorb nutrients for the embryo.
6. C – Pine trees are gymnosperms.
7. C – In angiosperms, fruits enclose the seeds.
8. B – Pollen grains are male gametophytes.
9. E – The seed coat develops from the outer layer of the ovule.
10. C – Pollen allows reproduction without water.
11. C – Not all seed plants have flowers; gymnosperms don’t.
12. D – Pollen carries sperm to the ovule for fertilization.
13. D – Angiosperms perform double fertilization (embryo + endosperm).
14. C – The ovary becomes the fruit after fertilization.
15. C – Cotyledons help store or transfer nutrients to the embryo.
16. D – Most conifers are gymnosperms.
17. B – Monocots have one cotyledon and parallel leaf veins.
18. C – The seed coat protects the embryo from damage and desiccation.
19. B – Gymnosperm seeds develop on the surface of cone scales.
20. C – Fertilization takes place inside the ovule.
21. C – Flowers and fruits help with reproduction and seed dispersal.
22. D – Fruits aid in seed dispersal by animals or other methods.
23. C – The ovule becomes the seed.
24. D – The style connects the stigma to the ovary.
25. E – Seeds and pollen remove the need for water in fertilization.
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