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 end product of the Calvin cycle?
A.
Oxygen
B.
Glucose
C.
NADPH
D.
ATP
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Solution
The end product of the Calvin cycle is glucose.
Correct Answer:
B
— Glucose
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Q. What is the function of collenchyma cells in plants?
A.
Storage of starch
B.
Transport of nutrients
C.
Providing flexible support
D.
Photosynthesis
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Solution
Collenchyma cells provide flexible support to young stems and leaves, allowing for growth and movement.
Correct Answer:
C
— Providing flexible support
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Q. What is the function of collenchyma cells?
A.
Transport water
B.
Provide flexible support
C.
Store nutrients
D.
Conduct photosynthesis
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Solution
Collenchyma cells provide flexible support to young stems and leaves.
Correct Answer:
B
— Provide flexible support
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Q. What is the function of guard cells in plant leaves?
A.
Photosynthesis
B.
Water storage
C.
Regulating gas exchange
D.
Nutrient transport
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Solution
Guard cells regulate the opening and closing of stomata, controlling gas exchange and water loss.
Correct Answer:
C
— Regulating gas exchange
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Q. What is the function of ribosomes in plant cells?
A.
Energy production
B.
Photosynthesis
C.
Protein synthesis
D.
Cell division
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Solution
Ribosomes are responsible for protein synthesis, translating mRNA into polypeptide chains.
Correct Answer:
C
— Protein synthesis
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Q. What is the function of RuBisCO in the Calvin cycle?
A.
To produce ATP
B.
To fix carbon dioxide
C.
To generate NADPH
D.
To release oxygen
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Solution
RuBisCO catalyzes the fixation of carbon dioxide in the Calvin cycle.
Correct Answer:
B
— To fix carbon dioxide
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Q. What is the function of sclerenchyma cells in plants?
A.
Photosynthesis
B.
Transport of nutrients
C.
Support and protection
D.
Storage of water
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Solution
Sclerenchyma cells provide support and protection due to their thick, lignified cell walls.
Correct Answer:
C
— Support and protection
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Q. What is the function of the Golgi apparatus in plant cells?
A.
Protein modification and packaging
B.
Photosynthesis
C.
Cell division
D.
Storage of water
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Solution
The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.
Correct Answer:
A
— Protein modification and packaging
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Q. What is the main advantage of using hybrid plants in agriculture?
A.
Higher resistance to diseases
B.
Lower growth rates
C.
Increased reliance on specific pollinators
D.
Reduced yield
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Solution
Hybrid plants are often bred for higher resistance to diseases, leading to better crop yields.
Correct Answer:
A
— Higher resistance to diseases
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Q. What is the main advantage of using marker-assisted selection in plant breeding?
A.
It reduces the need for fertilizers
B.
It speeds up the breeding process
C.
It eliminates the need for irrigation
D.
It increases the size of fruits
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Solution
Marker-assisted selection speeds up the breeding process by allowing breeders to select plants with desirable traits more efficiently.
Correct Answer:
B
— It speeds up the breeding process
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Q. What is the main advantage of using transgenic plants in agriculture?
A.
Higher market prices
B.
Increased crop yield
C.
More labor-intensive farming
D.
Reduced biodiversity
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Solution
Transgenic plants are engineered to have traits that can lead to increased crop yield, making them advantageous in agriculture.
Correct Answer:
B
— Increased crop yield
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Q. What is the main benefit of consuming antioxidants found in fruits and vegetables?
A.
Increase energy
B.
Reduce inflammation
C.
Enhance digestion
D.
Improve vision
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Solution
Antioxidants help reduce inflammation and combat oxidative stress in the body.
Correct Answer:
B
— Reduce inflammation
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Q. What is the main benefit of consuming cruciferous vegetables like broccoli and kale?
A.
High protein content
B.
Rich in antioxidants
C.
Low calorie count
D.
High fat content
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Solution
Cruciferous vegetables are rich in antioxidants, which help protect against diseases.
Correct Answer:
B
— Rich in antioxidants
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Q. What is the main benefit of consuming dietary fiber from plants?
A.
Increased energy
B.
Improved digestion
C.
Enhanced taste
D.
Faster metabolism
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Solution
Dietary fiber aids in digestion and helps maintain gut health.
Correct Answer:
B
— Improved digestion
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Q. What is the main benefit of consuming omega-3 fatty acids found in certain plants?
A.
Improved digestion
B.
Enhanced cognitive function
C.
Increased energy
D.
Better skin hydration
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Solution
Omega-3 fatty acids, found in plants like flaxseed, are known to enhance cognitive function and support brain health.
Correct Answer:
B
— Enhanced cognitive function
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Q. What is the main byproduct of photosynthesis?
A.
Oxygen
B.
Carbon dioxide
C.
Glucose
D.
Water
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Solution
Oxygen is released as a byproduct of photosynthesis during the light reactions.
Correct Answer:
A
— Oxygen
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Q. What is the main characteristic of sclerenchyma cells?
A.
Flexible and living at maturity
B.
Thick, lignified cell walls and dead at maturity
C.
Thin cell walls and living at maturity
D.
Photosynthetic and living at maturity
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Solution
Sclerenchyma cells have thick, lignified walls and are dead at maturity, providing structural support.
Correct Answer:
B
— Thick, lignified cell walls and dead at maturity
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Q. What is the main component of the plant cell wall?
A.
Cellulose
B.
Chitin
C.
Lignin
D.
Pectin
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Solution
Cellulose is the primary structural component of the plant cell wall, providing rigidity and strength.
Correct Answer:
A
— Cellulose
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Q. What is the main difference between aerobic and anaerobic respiration in plants?
A.
Oxygen requirement
B.
Energy yield
C.
Location in the plant
D.
Type of glucose used
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Solution
The main difference is that aerobic respiration requires oxygen, while anaerobic respiration does not.
Correct Answer:
A
— Oxygen requirement
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Q. What is the main energy carrier produced during the light reactions?
A.
NADPH
B.
ATP
C.
FADH2
D.
Glucose
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Solution
ATP is the main energy carrier produced during the light reactions of photosynthesis.
Correct Answer:
B
— ATP
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Q. What is the main energy currency produced during the light reactions?
A.
NADPH
B.
FADH2
C.
ATP
D.
Glucose
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Solution
ATP is the main energy currency produced during the light reactions of photosynthesis.
Correct Answer:
C
— ATP
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Q. What is the main enzyme involved in the carbon fixation process during the dark reactions?
A.
RUBISCO
B.
ATP synthase
C.
NADP+ reductase
D.
Phosphofructokinase
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Solution
RUBISCO is the main enzyme that catalyzes the fixation of carbon dioxide in the dark reactions.
Correct Answer:
A
— RUBISCO
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Q. What is the main function of alkaloids in plants?
A.
Energy storage
B.
Defense against herbivores
C.
Water retention
D.
Photosynthesis
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Solution
Alkaloids serve as a defense mechanism against herbivores due to their toxicity.
Correct Answer:
B
— Defense against herbivores
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Q. What is the main function of antioxidants found in plants?
A.
Promote growth
B.
Prevent oxidative stress
C.
Aid in reproduction
D.
Enhance photosynthesis
Show solution
Solution
Antioxidants help prevent oxidative stress by neutralizing free radicals.
Correct Answer:
B
— Prevent oxidative stress
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Q. What is the main function of chlorophyll in plants?
A.
Water absorption
B.
Nutrient transport
C.
Light absorption
D.
Gas exchange
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Solution
Chlorophyll's main function is to absorb light energy for photosynthesis.
Correct Answer:
C
— Light absorption
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Q. What is the main function of phloem in plants?
A.
Transport water
B.
Transport nutrients
C.
Transport sugars
D.
Support structure
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Solution
Phloem is responsible for transporting sugars and other metabolic products downward from the leaves.
Correct Answer:
C
— Transport sugars
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Q. What is the main function of phloem in vascular plants?
A.
Transport water
B.
Transport nutrients
C.
Transport sugars
D.
Support structure
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Solution
Phloem is responsible for transporting sugars produced during photosynthesis throughout the plant.
Correct Answer:
C
— Transport sugars
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Q. What is the main function of root hairs?
A.
Photosynthesis
B.
Nutrient absorption
C.
Support
D.
Storage
Show solution
Solution
Root hairs increase the surface area for water and nutrient absorption from the soil.
Correct Answer:
B
— Nutrient absorption
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Q. What is the main function of stomata in plant leaves?
A.
Nutrient absorption
B.
Gas exchange
C.
Water storage
D.
Photosynthesis
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Solution
Stomata are small openings that facilitate gas exchange, allowing CO2 in and O2 out.
Correct Answer:
B
— Gas exchange
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Q. What is the main function of stomata in plants?
A.
Nutrient absorption
B.
Gas exchange
C.
Water storage
D.
Support
Show solution
Solution
Stomata facilitate gas exchange, allowing CO2 in and O2 out.
Correct Answer:
B
— Gas exchange
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