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. In which part of the plant does the majority of water absorption occur?
A.
Stems
B.
Leaves
C.
Roots
D.
Flowers
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Solution
Roots are primarily responsible for the absorption of water and nutrients from the soil.
Correct Answer:
C
— Roots
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Q. In which phase of photosynthesis does carbon fixation occur?
A.
Light reactions
B.
Calvin cycle
C.
Photorespiration
D.
Electron transport chain
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Solution
Carbon fixation occurs during the Calvin cycle.
Correct Answer:
B
— Calvin cycle
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Q. In which phase of photosynthesis is ATP synthesized?
A.
Light-dependent reactions
B.
Calvin cycle
C.
Both A and B
D.
None of the above
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Solution
ATP is synthesized during the light-dependent reactions of photosynthesis.
Correct Answer:
A
— Light-dependent reactions
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Q. In which phase of photosynthesis is carbon dioxide utilized?
A.
Light reactions
B.
Calvin cycle
C.
Photorespiration
D.
Electron transport chain
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Solution
Carbon dioxide is utilized in the Calvin cycle during photosynthesis.
Correct Answer:
B
— Calvin cycle
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Q. In which phase of photosynthesis is glucose synthesized?
A.
Light reactions
B.
Calvin cycle
C.
Photorespiration
D.
Electron transport chain
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Solution
Glucose is synthesized during the Calvin cycle, which occurs in the stroma of chloroplasts.
Correct Answer:
B
— Calvin cycle
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Q. In which plant group do you find seeds that are not enclosed in an ovary?
A.
Angiosperms
B.
Gymnosperms
C.
Bryophytes
D.
Pteridophytes
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Solution
Gymnosperms produce seeds that are exposed on cones, unlike angiosperms which have seeds enclosed in fruits.
Correct Answer:
B
— Gymnosperms
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Q. In which plant group do you find the largest diversity of species?
A.
Bryophytes
B.
Angiosperms
C.
Gymnosperms
D.
Pteridophytes
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Solution
Angiosperms, or flowering plants, represent the largest diversity of species in the plant kingdom.
Correct Answer:
B
— Angiosperms
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Q. In which plant group would you find a dominant sporophyte generation?
A.
Bryophytes
B.
Pteridophytes
C.
Gymnosperms
D.
Angiosperms
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Solution
In Pteridophytes, the sporophyte generation is dominant and is the most visible part of the plant.
Correct Answer:
B
— Pteridophytes
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Q. In which plant group would you find a gametophyte that is typically larger and more complex than the sporophyte?
A.
Angiosperms
B.
Gymnosperms
C.
Bryophytes
D.
Pteridophytes
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Solution
In Bryophytes, the gametophyte is the dominant and more complex stage, while the sporophyte is often dependent on it.
Correct Answer:
C
— Bryophytes
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Q. In which plant group would you find a vascular system with xylem and phloem?
A.
Mosses
B.
Ferns
C.
Liverworts
D.
Algae
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Solution
Ferns possess a vascular system that includes xylem and phloem, allowing for efficient transport of water and nutrients.
Correct Answer:
B
— Ferns
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Q. In which type of plant reproduction do gametes fuse to form a zygote?
A.
Asexual reproduction
B.
Vegetative propagation
C.
Sexual reproduction
D.
Apomixis
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Solution
Sexual reproduction involves the fusion of male and female gametes to form a zygote, leading to the development of a new organism.
Correct Answer:
C
— Sexual reproduction
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Q. In which type of reproduction do plants produce seeds without fertilization?
A.
Asexual reproduction
B.
Apomixis
C.
Sexual reproduction
D.
Vegetative propagation
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Solution
Apomixis is a form of asexual reproduction where seeds are produced without fertilization, allowing for the offspring to be genetically identical to the parent.
Correct Answer:
B
— Apomixis
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Q. What are the two main stages of photosynthesis?
A.
Light reactions and Calvin cycle
B.
Respiration and Fermentation
C.
Transpiration and Absorption
D.
Glycolysis and Krebs cycle
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Solution
Photosynthesis consists of light reactions and the Calvin cycle.
Correct Answer:
A
— Light reactions and Calvin cycle
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Q. What 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. What gas is primarily consumed during the process of respiration in plants?
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Oxygen is primarily consumed during respiration, as it is used to oxidize glucose to release energy.
Correct Answer:
A
— Oxygen
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Q. What gas is primarily consumed during the respiration process in plants?
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Oxygen is primarily consumed during respiration, as it is used to oxidize glucose to release energy.
Correct Answer:
A
— Oxygen
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Q. What gas is produced as a byproduct of photosynthesis?
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Oxygen is produced as a byproduct of photosynthesis during the light reactions.
Correct Answer:
A
— Oxygen
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Q. What is a common application of CRISPR technology in plants?
A.
Creating clones of plants
B.
Editing specific genes for desired traits
C.
Increasing photosynthesis efficiency
D.
Enhancing seed germination
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Solution
CRISPR technology allows for precise editing of specific genes to enhance traits such as disease resistance.
Correct Answer:
B
— Editing specific genes for desired traits
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Q. What is a common application of plant tissue culture in biotechnology?
A.
Pest control
B.
Plant breeding
C.
Propagation of disease-free plants
D.
Soil improvement
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Solution
Plant tissue culture is widely used to propagate disease-free plants, ensuring healthy stock for agriculture.
Correct Answer:
C
— Propagation of disease-free plants
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Q. What is a key feature of monocots in plant classification?
A.
Two seed leaves
B.
Parallel leaf venation
C.
Woody stems
D.
Deep taproots
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Solution
Monocots are characterized by parallel leaf venation, which distinguishes them from dicots.
Correct Answer:
B
— Parallel leaf venation
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Q. What is a major benefit of using genetically modified crops?
A.
Increased nutritional value
B.
Higher yield and pest resistance
C.
Reduced need for pesticides
D.
All of the above
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Solution
Genetically modified crops can provide increased nutritional value, higher yield, pest resistance, and reduced pesticide use.
Correct Answer:
D
— All of the above
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Q. What is a phenotype ratio of a dihybrid cross?
A.
1:1
B.
3:1
C.
9:3:3:1
D.
1:2:1
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Solution
A dihybrid cross typically results in a 9:3:3:1 phenotypic ratio, representing the combinations of two traits.
Correct Answer:
C
— 9:3:3:1
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Q. What is adaptive radiation in the context of plant evolution?
A.
The process of plants adapting to a single environment
B.
The diversification of a group of organisms into forms filling different ecological niches
C.
The extinction of plant species due to environmental changes
D.
The gradual change of plant species over time
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Solution
Adaptive radiation refers to the diversification of a group of organisms into various forms that adapt to different ecological niches.
Correct Answer:
B
— The diversification of a group of organisms into forms filling different ecological niches
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Q. What is apomixis in plants?
A.
A form of sexual reproduction
B.
A form of asexual reproduction without fertilization
C.
The process of pollination
D.
The formation of seeds from ovules
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Solution
Apomixis is a form of asexual reproduction where seeds are produced without fertilization.
Correct Answer:
B
— A form of asexual reproduction without fertilization
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Q. What is photolysis in the context of photosynthesis?
A.
Splitting of water molecules
B.
Formation of glucose
C.
Absorption of light
D.
Release of oxygen
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Solution
Photolysis refers to the splitting of water molecules during the light-dependent reactions.
Correct Answer:
A
— Splitting of water molecules
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Q. What is photophosphorylation?
A.
Synthesis of glucose
B.
Production of ATP using light energy
C.
Conversion of NADP+ to NADPH
D.
Splitting of water molecules
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Solution
Photophosphorylation is the process of producing ATP using light energy during photosynthesis.
Correct Answer:
B
— Production of ATP using light energy
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A.
Growth towards light
B.
Growth away from light
C.
Growth in response to gravity
D.
Growth in response to water
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Solution
Phototropism is the growth of a plant towards light, driven by auxin distribution.
Correct Answer:
A
— Growth towards light
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Q. What is produced as a byproduct of the light reactions?
A.
Glucose
B.
Oxygen
C.
NADPH
D.
ATP
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Solution
Oxygen is released as a byproduct of the light reactions during the splitting of water.
Correct Answer:
B
— Oxygen
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Q. What is produced as a byproduct of the light-dependent reactions of photosynthesis?
A.
Glucose
B.
Oxygen
C.
NADPH
D.
ATP
Show solution
Solution
Oxygen is produced as a byproduct of the light-dependent reactions.
Correct Answer:
B
— Oxygen
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Q. What is produced during the light reactions of photosynthesis?
A.
Glucose
B.
Oxygen
C.
NADPH
D.
Both Oxygen and NADPH
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Solution
Both oxygen and NADPH are produced during the light reactions.
Correct Answer:
D
— Both Oxygen and NADPH
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