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 type of symbiotic relationship exists between plants and mycorrhizal fungi?
A.
Parasitism
B.
Commensalism
C.
Mutualism
D.
Competition
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Solution
The relationship between plants and mycorrhizal fungi is mutualistic, as both parties benefit from the association.
Correct Answer:
C
— Mutualism
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Q. What type of symmetry do most flowers exhibit?
A.
Radial symmetry
B.
Bilateral symmetry
C.
Asymmetry
D.
None of the above
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Solution
Most flowers exhibit radial symmetry, allowing for multiple lines of symmetry.
Correct Answer:
A
— Radial symmetry
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Q. What type of symmetry is commonly found in flowers of the Asteraceae family?
A.
Radial symmetry
B.
Bilateral symmetry
C.
Asymmetry
D.
None of the above
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Solution
Flowers in the Asteraceae family typically exhibit radial symmetry.
Correct Answer:
A
— Radial symmetry
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Q. What type of symmetry is commonly found in flowers of the family Asteraceae?
A.
Radial symmetry
B.
Bilateral symmetry
C.
Asymmetry
D.
None
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Solution
Flowers in the Asteraceae family typically exhibit radial symmetry, allowing for multiple lines of symmetry.
Correct Answer:
A
— Radial symmetry
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Q. What type of symmetry is exhibited by most flowers?
A.
Radial symmetry
B.
Bilateral symmetry
C.
Asymmetry
D.
None of the above
Show solution
Solution
Most flowers exhibit radial symmetry, allowing for multiple lines of symmetry.
Correct Answer:
A
— Radial symmetry
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Q. What type of tissue forms the outer protective layer of a plant?
A.
Vascular tissue
B.
Ground tissue
C.
Dermal tissue
D.
Meristematic tissue
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Solution
Dermal tissue forms the outer protective layer of the plant, including the epidermis.
Correct Answer:
C
— Dermal tissue
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Q. What type of tissue is responsible for the growth of plants?
A.
Dermal tissue
B.
Vascular tissue
C.
Meristematic tissue
D.
Ground tissue
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Solution
Meristematic tissue consists of undifferentiated cells that can divide and contribute to plant growth.
Correct Answer:
C
— Meristematic tissue
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Q. What type of tissue is responsible for the transport of sugars in plants?
A.
Xylem
B.
Phloem
C.
Cortex
D.
Epidermis
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Solution
Phloem is the vascular tissue responsible for the transport of sugars and other metabolic products downward from the leaves.
Correct Answer:
B
— Phloem
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Q. Where do the light reactions of photosynthesis occur?
A.
In the stroma
B.
In the thylakoid membranes
C.
In the cytoplasm
D.
In the mitochondria
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Solution
The light reactions take place in the thylakoid membranes of chloroplasts.
Correct Answer:
B
— In the thylakoid membranes
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Q. Where do the light reactions of photosynthesis take place?
A.
In the stroma
B.
In the thylakoid membranes
C.
In the cytoplasm
D.
In the mitochondria
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Solution
The light reactions occur in the thylakoid membranes of chloroplasts.
Correct Answer:
B
— In the thylakoid membranes
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Q. Where in the chloroplast does the Calvin cycle take place?
A.
Thylakoid membrane
B.
Stroma
C.
Outer membrane
D.
Inner membrane
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Solution
The Calvin cycle occurs in the stroma of the chloroplast.
Correct Answer:
B
— Stroma
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Q. Which biotechnology application can help in developing drought-resistant crops?
A.
Gene silencing
B.
Plant hybridization
C.
Tissue culture
D.
Photosynthetic enhancement
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Solution
Gene silencing can be used to develop drought-resistant crops by targeting specific genes that affect water retention and stress response.
Correct Answer:
A
— Gene silencing
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Q. Which biotechnology application is used in forensic science?
A.
Gene therapy
B.
DNA fingerprinting
C.
Monoclonal antibodies
D.
Bioremediation
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Solution
DNA fingerprinting is a technique used in forensic science to identify individuals based on their unique DNA profiles.
Correct Answer:
B
— DNA fingerprinting
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Q. Which biotechnology application is used to produce insulin?
A.
Gene cloning
B.
Fermentation
C.
Cell culture
D.
Transgenic organisms
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Solution
Gene cloning is used to produce insulin by inserting the insulin gene into bacteria, which then produce the hormone.
Correct Answer:
A
— Gene cloning
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Q. Which biotechnology method is used to produce plants that can tolerate herbicides?
A.
Gene cloning
B.
Somatic hybridization
C.
Transgenic technology
D.
Micropropagation
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Solution
Transgenic technology is used to produce plants that can tolerate herbicides by introducing specific genes that confer this trait.
Correct Answer:
C
— Transgenic technology
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Q. Which biotechnology technique is commonly used to create genetically modified organisms (GMOs)?
A.
Cloning
B.
CRISPR-Cas9
C.
Hybridization
D.
Tissue culture
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Solution
CRISPR-Cas9 is a precise gene-editing technology that allows for targeted modifications in the DNA of organisms, including plants.
Correct Answer:
B
— CRISPR-Cas9
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Q. Which biotechnology technique is commonly used to produce transgenic plants?
A.
Polymerase Chain Reaction (PCR)
B.
Agrobacterium-mediated transformation
C.
Gel electrophoresis
D.
Micropropagation
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Solution
Agrobacterium-mediated transformation is a widely used method for introducing foreign genes into plant cells.
Correct Answer:
B
— Agrobacterium-mediated transformation
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Q. Which classification level comes directly after 'Family' in the taxonomic hierarchy?
A.
Order
B.
Genus
C.
Species
D.
Class
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Solution
The taxonomic hierarchy follows the order: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Correct Answer:
B
— Genus
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Q. Which classification level comes directly after 'Kingdom' in the hierarchy of biological classification?
A.
Phylum
B.
Class
C.
Order
D.
Family
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Solution
The classification level that comes directly after 'Kingdom' is 'Phylum'.
Correct Answer:
A
— Phylum
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Q. Which classification level comes directly after 'Kingdom' in the taxonomic hierarchy?
A.
Phylum
B.
Class
C.
Order
D.
Family
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Solution
In the taxonomic hierarchy, 'Phylum' is the classification level that comes directly after 'Kingdom'.
Correct Answer:
A
— Phylum
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Q. Which classification level is directly above the genus in the plant taxonomy hierarchy?
A.
Species
B.
Family
C.
Order
D.
Class
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Solution
The family is the taxonomic rank directly above the genus in the classification hierarchy.
Correct Answer:
B
— Family
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Q. Which classification level is directly below 'Family'?
A.
Order
B.
Genus
C.
Species
D.
Class
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Solution
The classification level directly below 'Family' is 'Genus'.
Correct Answer:
B
— Genus
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Q. Which classification system is commonly used for categorizing plants?
A.
Linnaean system
B.
Dichotomous key
C.
Phylogenetic tree
D.
Cladistics
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Solution
The Linnaean system is the most widely used classification system for categorizing plants based on hierarchical ranks.
Correct Answer:
A
— Linnaean system
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Q. Which classification system is most widely used for plants?
A.
Linnaean system
B.
Phylogenetic system
C.
Cladistic system
D.
Phenetic system
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Solution
The Linnaean system is the most widely used classification system for plants, organizing them into hierarchical categories based on shared characteristics.
Correct Answer:
A
— Linnaean system
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Q. Which classification system is most widely used in modern botany?
A.
Linnaean system
B.
Phylogenetic system
C.
Cladistic system
D.
Phenetic system
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Solution
The phylogenetic system is widely used in modern botany as it reflects evolutionary relationships.
Correct Answer:
B
— Phylogenetic system
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Q. Which environmental factor can limit the rate of photosynthesis?
A.
Temperature
B.
Soil pH
C.
Wind speed
D.
Humidity
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Solution
Temperature can limit the rate of photosynthesis, as enzymes involved are temperature-sensitive.
Correct Answer:
A
— Temperature
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Q. Which environmental factor is most critical for seed germination?
A.
Light
B.
Temperature
C.
Soil type
D.
Humidity
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Solution
Temperature is a critical factor for seed germination, as it affects metabolic processes.
Correct Answer:
B
— Temperature
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Q. Which enzyme catalyzes the first step of the Calvin cycle?
A.
Rubisco
B.
ATP synthase
C.
NADP+ reductase
D.
Phosphofructokinase
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Solution
Rubisco catalyzes the first step of the Calvin cycle by fixing carbon dioxide.
Correct Answer:
A
— Rubisco
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Q. Which enzyme catalyzes the fixation of carbon dioxide in the Calvin cycle?
A.
Rubisco
B.
ATP synthase
C.
NADP+ reductase
D.
Phosphofructokinase
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Solution
Rubisco is the enzyme that catalyzes the fixation of carbon dioxide in the Calvin cycle.
Correct Answer:
A
— Rubisco
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Q. Which enzyme is crucial for carbon fixation in the Calvin cycle?
A.
Rubisco
B.
ATP synthase
C.
NADP+ reductase
D.
Phosphofructokinase
Show solution
Solution
Rubisco is the enzyme that catalyzes the first step of carbon fixation in the Calvin cycle.
Correct Answer:
A
— Rubisco
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