30 Plant Biology Quiz Questions and Answers

Plant biology, also known as botany, is a branch of biology that focuses on the scientific study of plants. It involves understanding the structure, function, evolution, classification, and distribution of plants, as well as their interactions with the environment and other organisms. Plant biology plays a vital role in agriculture, horticulture, forestry, ecology, and environmental sciences.

Key aspects of plant biology include:

Plant Anatomy: Plant biology examines the internal structure of plants, including tissues, cells, and organs. It involves studying the root system, stem, leaves, flowers, and fruits.

Plant Physiology: Plant physiology investigates the functions and processes within plants. This includes photosynthesis, respiration, transpiration, nutrient uptake, growth, and reproduction.

Plant Taxonomy: Plant biology involves the classification and naming of plants based on their characteristics and evolutionary relationships. Taxonomists categorize plants into different groups, such as families, genera, and species.

Plant Ecology: Plant biology explores the interactions between plants and their environment. It studies plant communities, ecological adaptations, and the role of plants in ecosystems.

Plant Genetics: Plant biology includes the study of plant genetics, inheritance, and variation. Genetic research helps in understanding plant breeding, genetic engineering, and conservation.

Plant Evolution: Plant biology investigates the evolutionary history and diversification of plants over time, from early algae to modern-day flowering plants.

Article outline

• Part 1: 30 Plant Biology quiz questions & answers
• Part 2: Download Plant Biology questions & answers for free
• Part 3: Free online quiz creator – OnlineExamMaker

Part 1: 30 Plant Biology quiz questions & answers

1. What is the scientific study of plants known as?
a) Botany
b) Zoology
c) Entomology
d) Ecology
Answer: a) Botany

2. Which of the following is a plant organ responsible for photosynthesis?
a) Root
b) Stem
c) Leaf
d) Flower
Answer: c) Leaf

3. The process by which green plants convert light energy into chemical energy is called:
a) Respiration
b) Transpiration
c) Photosynthesis
d) Reproduction
Answer: c) Photosynthesis

4. What is the function of the root in a plant?
a) Photosynthesis
b) Water and nutrient absorption
c) Reproduction
d) Transport of sugars
Answer: b) Water and nutrient absorption

5. The male reproductive part of a flower is called:
a) Stigma
b) Style
c) Ovary
d) Stamen
Answer: d) Stamen

6. What is the process by which pollen is transferred from the stamen to the stigma of a flower?
a) Pollination
b) Germination
c) Fertilization
d) Photosynthesis
Answer: a) Pollination

7. The process of water loss from plant leaves through small openings called stomata is known as:
a) Photosynthesis
b) Transpiration
c) Respiration
d) Reproduction
Answer: b) Transpiration

8. Which plant hormone is responsible for cell elongation and growth?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: a) Auxin

9. The male gamete of a plant is called:
a) Ovule
b) Pollen
c) Embryo
d) Seed
Answer: b) Pollen

10. Which of the following plant organs is responsible for the transport of water and nutrients throughout the plant?
a) Root
b) Stem
c) Leaf
d) Flower
Answer: b) Stem

11. The process of a seed developing into a young plant is called:
a) Pollination
b) Germination
c) Fertilization
d) Photosynthesis
Answer: b) Germination

12. Which plant hormone is responsible for promoting fruit ripening?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Ethylene
Answer: d) Ethylene

13. The female reproductive part of a flower is called:
a) Stigma
b) Style
c) Ovary
d) Stamen
Answer: c) Ovary

14. The process by which a seed develops into a new plant under favorable conditions is called:
a) Pollination
b) Germination
c) Fertilization
d) Photosynthesis
Answer: b) Germination

15. Which of the following plant hormones is responsible for promoting cell division and lateral bud growth?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: c) Cytokinin

Part 2: Download Plant Biology questions & answers for free

16. What is the function of the flower in a plant?
a) Photosynthesis
b) Water and nutrient absorption
c) Reproduction
d) Transport of sugars
Answer: c) Reproduction

17. Which part of the plant is responsible for producing seeds after fertilization?
a) Root
b) Stem
c) Leaf
d) Flower
Answer: d) Flower

18. The process by which a pollen grain fuses with an ovule to form a seed is called:
a) Pollination
b) Germination
c) Fertilization
d) Photosynthesis
Answer: c) Fertilization

19. Which of the following is NOT a primary plant tissue?
a) Epidermis
b) Phloem
c) Xylem
d) Meristem
Answer: d) Meristem

20. The process of transferring pollen from the anther to the stigma within the same flower is called:
a) Self-pollination
b) Cross-pollination
c) Germination
d) Fertilization
Answer: a) Self-pollination

21. What is the function of the stomata in plant leaves?
a) Water and nutrient absorption
b) Gas exchange (CO2 in and O2 out)
c) Reproduction
d) Transport of sugars
Answer: b) Gas exchange (CO2 in and O2 out)

22. Which plant hormone is responsible for promoting seed dormancy and closing stomata during water stress?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
Answer: d) Abscisic acid

23. Which of the following is the primary pigment responsible for capturing light energy during photosynthesis?
a) Chlorophyll
b) Carotenoids
c) Xanthophylls
d) Anthocyanins
Answer: a) Chlorophyll

24. The process by which plants convert glucose and oxygen into carbon dioxide and water with the release of energy is called:
a) Photosynthesis
b) Transpiration
c) Respiration
d) Reproduction
Answer: c) Respiration

25. What is the function of the xylem tissue in plants?
a) Water and nutrient absorption
b) Gas exchange (CO2 in and O2 out)
c) Transport of water and minerals from roots to leaves
d) Transport of sugars from leaves to other parts of the plant
Answer: c) Transport of water and minerals from roots to leaves

26. Which part of the plant is responsible for anchoring it in the soil and absorbing water and nutrients?
a) Root
b) Stem
c) Leaf
d) Flower
Answer: a) Root

27. Which of the following is a specialized plant tissue responsible for conducting sugars and other nutrients throughout the plant?
a) Epidermis
b) Phloem
c) Xylem
d) Meristem
Answer: b) Phloem

28. The process by which pollen is transferred from the flower of one plant to the flower of another plant is called:
a) Self-pollination
b) Cross-pollination
c) Germination
d) Fertilization
Answer: b) Cross-pollination

29. Which of the following is a plant hormone that promotes cell elongation and fruit growth?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Ethylene
Answer: b) Gibberellin

30. Which of the following is the primary pigment responsible for capturing light energy during photosynthesis?
a) Chlorophyll
b) Carotenoids
c) Xanthophylls
d) Anthocyanins
Answer: a) Chlorophyll

Part 3: Free online quiz creator – OnlineExamMaker

With OnlineExamMaker quiz maker, teachers can easily create, customize, and distribute quizzes with just a few clicks. The intuitive interface provides a range of question types, including multiple-choice, true or false, fill in the blank, and open-ended questions, enabling users to make professional assessments that suit their specific needs.