Botany is the branch of Biology that focuses on the study of plants , their structure, functions, growth, reproduction, and role in the environment. This category is curated for school students (Classes 6–12) and undergraduate learners to build strong fundamentals with exam-focused clarity.
In this section, you’ll explore:
Plant morphology, anatomy, and physiology explained step-by-step
Reproduction in plants , development, and life cycles
Cell biology, genetics, and biotechnology concepts related to plants
Ecology and plant diversity with real-world relevance
Important questions, MCQs, diagrams, and revision notes for exams
The content is aligned with NCERT , school boards, and UG syllabi , making it highly useful for school exams, NEET preparation, and college assessments . Concepts are explained in simple language with a focus on understanding, not rote learning.
Build a strong foundation in plant sciences and master Botany with confidence.
Q. What is the primary function of flowers in angiosperms?
A.
Photosynthesis
B.
Reproduction
C.
Water absorption
D.
Nutrient storage
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Solution
Flowers are the reproductive structures of angiosperms, facilitating pollination and seed production.
Correct Answer:
B
— Reproduction
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Q. What is the primary function of parenchyma cells in plants?
A.
Transport water and nutrients
B.
Provide structural support
C.
Store food and nutrients
D.
Conduct photosynthesis
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Solution
Parenchyma cells primarily function in storage, as they can store starch, oils, and water.
Correct Answer:
C
— Store food and nutrients
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Q. What is the primary function of phloem in plants?
A.
Transport water
B.
Transport nutrients
C.
Transport sugars
D.
Provide support
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Solution
Phloem is responsible for the transport of sugars and other metabolic products downward from the leaves.
Correct Answer:
C
— Transport sugars
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Q. What is the primary function of phloem in vascular plants?
A.
Transport water and minerals
B.
Transport sugars and nutrients
C.
Provide structural support
D.
Store energy
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Solution
Phloem is responsible for the transport of sugars and nutrients produced during photosynthesis from the leaves to other parts of the plant.
Correct Answer:
B
— Transport sugars and nutrients
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Q. What is the primary function of probiotics in human health?
A.
To enhance digestion
B.
To produce vitamins
C.
To increase appetite
D.
To cause infections
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Solution
Probiotics are beneficial bacteria that help maintain a healthy gut microbiome and enhance digestion.
Correct Answer:
A
— To enhance digestion
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Q. What is the primary function of root hairs?
A.
Photosynthesis
B.
Water absorption
C.
Nutrient storage
D.
Support
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Solution
Root hairs increase the surface area for water and nutrient absorption from the soil.
Correct Answer:
B
— Water absorption
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Q. What is the primary function of stomata in plant leaves?
A.
Water storage
B.
Gas exchange
C.
Nutrient transport
D.
Photosynthesis
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Solution
Stomata are small openings on the leaf surface that allow for gas exchange, primarily oxygen and carbon dioxide.
Correct Answer:
B
— Gas exchange
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Q. What is the primary function of stomata in plants?
A.
Nutrient storage
B.
Gas exchange
C.
Water storage
D.
Support
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Solution
Stomata facilitate gas exchange, allowing carbon dioxide in and oxygen out.
Correct Answer:
B
— Gas exchange
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Q. What is the primary function of the Calvin cycle?
A.
Convert light energy to chemical energy
B.
Fix carbon dioxide into organic molecules
C.
Produce oxygen
D.
Generate ATP
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Solution
The primary function of the Calvin cycle is to fix carbon dioxide into organic molecules.
Correct Answer:
B
— Fix carbon dioxide into organic molecules
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Q. What is the primary function of the cambium in plants?
A.
Photosynthesis
B.
Water transport
C.
Growth in thickness
D.
Nutrient storage
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Solution
The cambium is responsible for secondary growth, allowing plants to increase in thickness.
Correct Answer:
C
— Growth in thickness
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Q. What is the primary function of the Golgi apparatus in plant cells?
A.
Energy production
B.
Modification and packaging of proteins
C.
Photosynthesis
D.
Cell division
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Solution
The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.
Correct Answer:
B
— Modification and packaging of proteins
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Q. What is the primary function of the light reactions in photosynthesis?
A.
To produce glucose
B.
To convert solar energy into chemical energy
C.
To fix carbon dioxide
D.
To release oxygen
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Solution
The light reactions convert solar energy into chemical energy in the form of ATP and NADPH.
Correct Answer:
B
— To convert solar energy into chemical energy
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Q. What is the primary function of the ovule in seed plants?
A.
To produce pollen
B.
To develop into a seed after fertilization
C.
To absorb water and nutrients
D.
To support the plant structure
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Solution
The ovule develops into a seed after fertilization, containing the embryo and stored nutrients.
Correct Answer:
B
— To develop into a seed after fertilization
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Q. What is the primary function of the plasma membrane in plant cells?
A.
Energy production
B.
Regulating transport
C.
Photosynthesis
D.
Cell division
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Solution
The plasma membrane regulates the transport of substances in and out of the cell, maintaining homeostasis.
Correct Answer:
B
— Regulating transport
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Q. What is the primary function of the process of meiosis in plants?
A.
To produce identical daughter cells
B.
To generate genetic variation
C.
To facilitate photosynthesis
D.
To increase plant size
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Solution
Meiosis is crucial for sexual reproduction as it reduces the chromosome number by half and introduces genetic variation through recombination.
Correct Answer:
B
— To generate genetic variation
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Q. What is the primary function of the root system in vascular plants?
A.
Photosynthesis
B.
Nutrient absorption
C.
Reproduction
D.
Gas exchange
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Solution
The primary function of the root system in vascular plants is to absorb water and nutrients from the soil.
Correct Answer:
B
— Nutrient absorption
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Q. What is the primary function of the stamen in flowering plants?
A.
To produce seeds
B.
To attract pollinators
C.
To produce pollen
D.
To support the flower
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Solution
The stamen is the male reproductive part of a flower and is responsible for producing pollen.
Correct Answer:
C
— To produce pollen
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Q. What is the primary function of the xylem in vascular plants?
A.
Transporting sugars
B.
Transporting water and minerals
C.
Storing nutrients
D.
Photosynthesis
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Solution
The xylem is responsible for transporting water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transporting water and minerals
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Q. What is the primary function of xylem in plants?
A.
Transport of nutrients
B.
Transport of water
C.
Photosynthesis
D.
Storage of carbohydrates
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Solution
Xylem is responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transport of water
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Q. What is the primary function of xylem in vascular plants?
A.
Transport of nutrients
B.
Transport of water
C.
Photosynthesis
D.
Storage of carbohydrates
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Solution
Xylem is responsible for the transport of water and dissolved minerals from the roots to the rest of the plant.
Correct Answer:
B
— Transport of water
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Q. What is the primary goal of developing biofortified crops?
A.
To improve taste
B.
To enhance resistance to pests
C.
To increase nutritional value
D.
To reduce water requirements
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Solution
The primary goal of developing biofortified crops is to enhance their nutritional value, addressing deficiencies in diets.
Correct Answer:
C
— To increase nutritional value
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Q. What is the primary goal of phytoremediation?
A.
To enhance plant growth
B.
To clean up contaminated environments
C.
To increase crop yield
D.
To improve soil fertility
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Solution
Phytoremediation aims to clean up contaminated environments using plants that can absorb or degrade pollutants.
Correct Answer:
B
— To clean up contaminated environments
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Q. What is the primary health benefit of consuming cruciferous vegetables?
A.
High protein content
B.
Rich in antioxidants
C.
Low calorie
D.
High fat content
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Solution
Cruciferous vegetables like broccoli and kale are rich in antioxidants that may reduce cancer risk.
Correct Answer:
B
— Rich in antioxidants
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Q. What is the primary hormone responsible for promoting cell elongation in plants?
A.
Gibberellins
B.
Auxins
C.
Cytokinins
D.
Ethylene
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Solution
Auxins are the primary hormones that promote cell elongation, particularly in stems.
Correct Answer:
B
— Auxins
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Q. What is the primary mechanism by which evolution occurs in plant species?
A.
Natural selection
B.
Genetic drift
C.
Mutation
D.
Gene flow
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Solution
Natural selection is the primary mechanism of evolution, favoring traits that enhance survival and reproduction.
Correct Answer:
A
— Natural selection
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Q. What is the primary mechanism by which evolution occurs in plants?
A.
Natural selection
B.
Genetic drift
C.
Mutation
D.
Gene flow
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Solution
Natural selection is the primary mechanism of evolution, where advantageous traits become more common in a population.
Correct Answer:
A
— Natural selection
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Q. What is the primary mechanism by which nutrients are absorbed by plant roots?
A.
Active transport
B.
Facilitated diffusion
C.
Endocytosis
D.
Simple diffusion
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Solution
Active transport is the primary mechanism for nutrient absorption in plant roots, allowing plants to uptake minerals against their concentration gradient.
Correct Answer:
A
— Active transport
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Q. What is the primary mechanism by which plants adapt to their environment over generations?
A.
Photosynthesis
B.
Natural selection
C.
Transpiration
D.
Pollination
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Solution
Natural selection is the process through which species adapt to their environment, leading to evolutionary changes over generations.
Correct Answer:
B
— Natural selection
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Q. What is the primary method of asexual reproduction in plants?
A.
Budding
B.
Fragmentation
C.
Pollination
D.
Fertilization
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Solution
Fragmentation is a common method of asexual reproduction in plants where a part of the plant breaks off and develops into a new individual.
Correct Answer:
B
— Fragmentation
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Q. What is the primary method of asexual reproduction in the strawberry plant?
A.
Seed production
B.
Runners
C.
Cuttings
D.
Grafting
Show solution
Solution
Strawberry plants primarily reproduce asexually through runners, which are horizontal stems that grow along the ground and produce new plants.
Correct Answer:
B
— Runners
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