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 significance of apomixis in plant reproduction?
A.
It allows for sexual reproduction without fertilization
B.
It increases the need for pollinators
C.
It reduces seed viability
D.
It promotes genetic diversity
Show solution
Solution
Apomixis allows plants to produce seeds without fertilization, maintaining the parent plant's genetic makeup.
Correct Answer:
A
— It allows for sexual reproduction without fertilization
Learn More →
Q. What is the significance of crossing over during meiosis in plants?
A.
It increases genetic diversity
B.
It ensures identical offspring
C.
It repairs DNA
D.
It produces energy
Show solution
Solution
Crossing over during meiosis increases genetic diversity by exchanging genetic material between homologous chromosomes.
Correct Answer:
A
— It increases genetic diversity
Learn More →
Q. What is the significance of endophytes in plants?
A.
They cause diseases
B.
They enhance plant growth
C.
They compete with roots for nutrients
D.
They are harmful to humans
Show solution
Solution
Endophytes are beneficial microbes that live within plant tissues and can enhance growth and stress resistance.
Correct Answer:
B
— They enhance plant growth
Learn More →
Q. What is the significance of genetic recombination in plants?
A.
It increases genetic diversity
B.
It decreases mutation rates
C.
It stabilizes the genome
D.
It enhances photosynthesis
Show solution
Solution
Genetic recombination increases genetic diversity, which is important for adaptation and evolution in plants.
Correct Answer:
A
— It increases genetic diversity
Learn More →
Q. What is the significance of genetic variation in plant evolution?
A.
It decreases adaptability
B.
It increases susceptibility to diseases
C.
It enhances survival and adaptability
D.
It has no impact on evolution
Show solution
Solution
Genetic variation is crucial for evolution as it enhances survival and adaptability to changing environments.
Correct Answer:
C
— It enhances survival and adaptability
Learn More →
Q. What is the significance of mycorrhizal associations in plant growth?
A.
Increase in photosynthesis
B.
Enhanced nutrient uptake
C.
Reduction of transpiration
D.
Promotion of flowering
Show solution
Solution
Mycorrhizal associations enhance nutrient uptake, particularly phosphorus, benefiting plant growth.
Correct Answer:
B
— Enhanced nutrient uptake
Learn More →
Q. What is the significance of mycorrhizal associations in plant reproduction?
A.
They enhance seed germination
B.
They provide nutrients and water to the plant
C.
They increase flower production
D.
They prevent pollination
Show solution
Solution
Mycorrhizal associations improve nutrient and water uptake for plants, which can enhance overall health and reproductive success.
Correct Answer:
B
— They provide nutrients and water to the plant
Learn More →
Q. What is the significance of photoperiodism in plants?
A.
Regulating water loss
B.
Controlling flowering time
C.
Enhancing photosynthesis
D.
Increasing root growth
Show solution
Solution
Photoperiodism is the response of plants to the length of day and night, which controls flowering time.
Correct Answer:
B
— Controlling flowering time
Learn More →
Q. What is the significance of phytochemicals in plants for human health?
A.
They are essential nutrients
B.
They provide color to flowers
C.
They have health-promoting properties
D.
They are used for photosynthesis
Show solution
Solution
Phytochemicals are bioactive compounds in plants that have health-promoting properties, contributing to disease prevention.
Correct Answer:
C
— They have health-promoting properties
Learn More →
Q. What is the significance of terpenes in plants?
A.
Photosynthesis
B.
Aromatic properties
C.
Nutrient storage
D.
Water retention
Show solution
Solution
Terpenes contribute to the aromatic properties of plants and have various health benefits.
Correct Answer:
B
— Aromatic properties
Learn More →
Q. What is the significance of the 'Golden Rice' project?
A.
It is a new variety of ornamental rice
B.
It aims to combat vitamin A deficiency
C.
It increases rice yield significantly
D.
It is resistant to all pests
Show solution
Solution
'Golden Rice' is genetically engineered to produce beta-carotene, addressing vitamin A deficiency in populations that rely on rice as a staple food.
Correct Answer:
B
— It aims to combat vitamin A deficiency
Learn More →
Q. What is the significance of the apical meristem in plants?
A.
Root growth
B.
Leaf development
C.
Stem elongation
D.
All of the above
Show solution
Solution
The apical meristem is responsible for growth in length, contributing to root, stem, and leaf development.
Correct Answer:
D
— All of the above
Learn More →
Q. What is the significance of the Calvin cycle in photosynthesis?
A.
It produces ATP
B.
It generates oxygen
C.
It synthesizes glucose
D.
It captures light energy
Show solution
Solution
The Calvin cycle synthesizes glucose from carbon dioxide using the energy from ATP and NADPH produced in the light reactions.
Correct Answer:
C
— It synthesizes glucose
Learn More →
Q. What is the significance of the Cambrian explosion in plant evolution?
A.
It marked the first appearance of land plants.
B.
It led to the dominance of gymnosperms.
C.
It resulted in the extinction of many plant species.
D.
It was a period of rapid diversification of life forms.
Show solution
Solution
The Cambrian explosion was a period of rapid diversification of life forms, including early plant ancestors.
Correct Answer:
D
— It was a period of rapid diversification of life forms.
Learn More →
Q. What is the significance of the electron transport chain in photosynthesis?
A.
Produces glucose
B.
Generates ATP and NADPH
C.
Fixes carbon dioxide
D.
Releases oxygen
Show solution
Solution
The electron transport chain generates ATP and NADPH, which are essential for the Calvin cycle.
Correct Answer:
B
— Generates ATP and NADPH
Learn More →
Q. What is the significance of the fossil record in understanding plant evolution?
A.
It shows current plant diversity
B.
It provides evidence of past plant forms and their adaptations
C.
It predicts future plant evolution
D.
It eliminates the need for genetic studies
Show solution
Solution
The fossil record provides crucial evidence of past plant forms and their adaptations, helping scientists understand the evolutionary history of plants.
Correct Answer:
B
— It provides evidence of past plant forms and their adaptations
Learn More →
Q. What is the significance of the Hardy-Weinberg principle in plant genetics?
A.
It predicts allele frequencies in a population
B.
It describes protein synthesis
C.
It explains photosynthesis
D.
It outlines plant taxonomy
Show solution
Solution
The Hardy-Weinberg principle predicts allele frequencies in a population under ideal conditions, helping to understand genetic variation.
Correct Answer:
A
— It predicts allele frequencies in a population
Learn More →
Q. What is the significance of the Law of Segregation in plant genetics?
A.
It explains how traits are inherited independently
B.
It states that alleles segregate during gamete formation
C.
It describes the dominance of certain traits
D.
It outlines the process of photosynthesis
Show solution
Solution
The Law of Segregation states that during gamete formation, the two alleles for a trait segregate from each other, ensuring that offspring receive one allele from each parent.
Correct Answer:
B
— It states that alleles segregate during gamete formation
Learn More →
Q. What is the significance of the light-dependent reactions for the dark reactions?
A.
They provide glucose
B.
They produce ATP and NADPH
C.
They release carbon dioxide
D.
They absorb water
Show solution
Solution
The light-dependent reactions produce ATP and NADPH, which are essential for the dark reactions to synthesize glucose.
Correct Answer:
B
— They produce ATP and NADPH
Learn More →
Q. What is the significance of the light-dependent reactions in photosynthesis?
A.
They produce glucose directly
B.
They generate ATP and NADPH for the Calvin cycle
C.
They fix carbon dioxide
D.
They release carbon dioxide
Show solution
Solution
The light-dependent reactions generate ATP and NADPH, which are essential for the Calvin cycle.
Correct Answer:
B
— They generate ATP and NADPH for the Calvin cycle
Learn More →
Q. What is the significance of the light-dependent reactions?
A.
Produce glucose
B.
Generate ATP and NADPH
C.
Fix carbon dioxide
D.
Release oxygen
Show solution
Solution
The light-dependent reactions generate ATP and NADPH, which are used in the Calvin cycle.
Correct Answer:
B
— Generate ATP and NADPH
Learn More →
Q. What is the significance of the light-harvesting complexes?
A.
To synthesize glucose
B.
To absorb and transfer light energy
C.
To produce oxygen
D.
To fix carbon dioxide
Show solution
Solution
Light-harvesting complexes absorb and transfer light energy to the reaction center.
Correct Answer:
B
— To absorb and transfer light energy
Learn More →
Q. What is the significance of the proton gradient created during the light-dependent reactions?
A.
Drives ATP synthesis
B.
Fixes carbon
C.
Produces glucose
D.
Generates oxygen
Show solution
Solution
The proton gradient drives ATP synthesis through ATP synthase.
Correct Answer:
A
— Drives ATP synthesis
Learn More →
Q. What is the significance of the Z-scheme in photosynthesis?
A.
It describes the Calvin cycle
B.
It illustrates electron transport
C.
It shows light absorption
D.
It explains water splitting
Show solution
Solution
The Z-scheme illustrates the flow of electrons through the photosystems during light reactions.
Correct Answer:
B
— It illustrates electron transport
Learn More →
Q. What is the significance of using biopesticides derived from microbes?
A.
They are more toxic than chemical pesticides
B.
They can target specific pests without harming beneficial organisms
C.
They are less effective than synthetic pesticides
D.
They require more frequent application
Show solution
Solution
Biopesticides derived from microbes can effectively target specific pests while minimizing harm to non-target organisms.
Correct Answer:
B
— They can target specific pests without harming beneficial organisms
Learn More →
Q. What is the significance of using Latin names in plant classification?
A.
They are easier to remember
B.
They avoid language barriers
C.
They are more descriptive
D.
They are shorter
Show solution
Solution
Latin names in plant classification help avoid language barriers, allowing scientists worldwide to communicate effectively.
Correct Answer:
B
— They avoid language barriers
Learn More →
Q. What is the significance of using microbes in bioremediation?
A.
They increase soil fertility
B.
They degrade environmental pollutants
C.
They enhance plant growth
D.
They produce biofuels
Show solution
Solution
Microbes in bioremediation are used to degrade environmental pollutants, helping to clean up contaminated sites.
Correct Answer:
B
— They degrade environmental pollutants
Learn More →
Q. What is the significance of using probiotics in agriculture?
A.
They increase crop yield
B.
They enhance soil pH
C.
They promote weed growth
D.
They reduce water retention
Show solution
Solution
Probiotics can enhance crop yield by improving soil health and plant growth through beneficial microbial interactions.
Correct Answer:
A
— They increase crop yield
Learn More →
Q. What is the significance of using Trichoderma in agriculture?
A.
It enhances photosynthesis
B.
It acts as a biocontrol agent
C.
It increases soil salinity
D.
It promotes root growth
Show solution
Solution
Trichoderma is a fungus used as a biocontrol agent to suppress plant pathogens and promote plant health.
Correct Answer:
B
— It acts as a biocontrol agent
Learn More →
Q. What is the term for a plant that can reproduce without fertilization?
A.
Hermaphrodite
B.
Apomictic
C.
Dioecious
D.
Monoecious
Show solution
Solution
Apomictic plants can reproduce asexually without fertilization, producing seeds that are genetically identical to the parent.
Correct Answer:
B
— Apomictic
Learn More →
Showing 301 to 330 of 784 (27 Pages)