Biology is the science of life — from the tiniest cell to the most complex human systems. This category is designed to support school students (Classes 6–12) as well as undergraduate (UG) learners with clear explanations, exam-focused content, and concept-building resources. You’ll find:
Concept-wise explanations aligned with NCERT and common UG syllabi
Important questions & answers for school exams, NEET foundation, and college tests
Human physiology, genetics, ecology, biotechnology, and cell biology explained simply
Practice questions, MCQs, and revision notes to strengthen understanding
Doubt-solving and conceptual clarity for competitive and academic success
Whether you’re preparing for school exams , building a strong base for NEET , or studying Biology at the undergraduate level , this section helps you learn smarter, revise faster, and understand Biology deeply — not just memorize it.
Learn life sciences the right way — clear concepts, exam relevance, and real understanding.
Q. Which plant-derived substance is known to lower cholesterol levels in humans?
A.
Psyllium
B.
Saponins
C.
Tannins
D.
Resins
Show solution
Solution
Psyllium, derived from the psyllium seed, is effective in lowering cholesterol.
Correct Answer:
A
— Psyllium
Learn More →
Q. Which plant-derived substance is known to lower cholesterol levels?
A.
Beta-glucans
B.
Tannins
C.
Saponins
D.
Alkaloids
Show solution
Solution
Beta-glucans, found in oats and barley, are known to help lower cholesterol levels.
Correct Answer:
A
— Beta-glucans
Learn More →
Q. Which plant-derived substance is often used to treat anxiety and promote relaxation?
A.
Valerian root
B.
Echinacea
C.
Ginger
D.
Peppermint
Show solution
Solution
Valerian root is commonly used in herbal medicine for its calming effects and ability to reduce anxiety.
Correct Answer:
A
— Valerian root
Learn More →
Q. Which plant-derived substance is used to lower cholesterol levels?
A.
Psyllium
B.
Caffeine
C.
Tannins
D.
Saponins
Show solution
Solution
Psyllium, a soluble fiber from the psyllium plant, is effective in lowering cholesterol.
Correct Answer:
A
— Psyllium
Learn More →
Q. Which process allows for genetic variation in plant populations, contributing to evolution?
A.
Mitosis
B.
Meiosis
C.
Cloning
D.
Asexual reproduction
Show solution
Solution
Meiosis is the process that allows for genetic variation in plant populations, which is essential for evolution.
Correct Answer:
B
— Meiosis
Learn More →
Q. Which process allows for the transfer of genetic material between different plant species?
A.
Hybridization
B.
Cloning
C.
Asexual reproduction
D.
Apomixis
Show solution
Solution
Hybridization allows for the transfer of genetic material between different plant species, leading to new varieties.
Correct Answer:
A
— Hybridization
Learn More →
Q. Which process allows plants to adapt to different environments over time?
A.
Photosynthesis
B.
Transpiration
C.
Evolution
D.
Respiration
Show solution
Solution
Evolution allows plants to adapt to different environments over time through mechanisms like natural selection.
Correct Answer:
C
— Evolution
Learn More →
Q. Which process allows plants to convert light energy into chemical energy?
A.
Respiration
B.
Photosynthesis
C.
Transpiration
D.
Fermentation
Show solution
Solution
Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose.
Correct Answer:
B
— Photosynthesis
Learn More →
Q. Which process allows plants to convert sunlight into chemical energy?
A.
Respiration
B.
Photosynthesis
C.
Transpiration
D.
Fermentation
Show solution
Solution
Photosynthesis is the process by which plants convert sunlight into chemical energy, producing glucose and oxygen.
Correct Answer:
B
— Photosynthesis
Learn More →
Q. Which process allows plants to evolve new traits in response to environmental changes?
A.
Mutation
B.
Translocation
C.
Grafting
D.
Cloning
Show solution
Solution
Mutation introduces new genetic variations, which can lead to the evolution of new traits in response to environmental changes.
Correct Answer:
A
— Mutation
Learn More →
Q. Which process allows plants to reproduce asexually through runners?
A.
Budding
B.
Fragmentation
C.
Vegetative propagation
D.
Pollination
Show solution
Solution
Vegetative propagation is a form of asexual reproduction where new plants grow from runners or stolons.
Correct Answer:
C
— Vegetative propagation
Learn More →
Q. Which process can lead to the rapid evolution of plant traits in response to environmental pressures?
A.
Stabilizing selection
B.
Directional selection
C.
Disruptive selection
D.
All of the above
Show solution
Solution
All types of selection (stabilizing, directional, and disruptive) can lead to rapid evolution of plant traits in response to environmental pressures.
Correct Answer:
D
— All of the above
Learn More →
Q. Which process converts light energy into chemical energy in plants?
A.
Respiration
B.
Transpiration
C.
Photosynthesis
D.
Fermentation
Show solution
Solution
Photosynthesis converts light energy into chemical energy stored in glucose.
Correct Answer:
C
— Photosynthesis
Learn More →
Q. Which process describes the copying of DNA to produce two identical DNA molecules?
A.
Transcription
B.
Translation
C.
Replication
D.
Recombination
Show solution
Solution
Replication is the process by which DNA is copied to produce two identical DNA molecules.
Correct Answer:
C
— Replication
Learn More →
Q. Which process describes the exchange of genetic material between homologous chromosomes during meiosis?
A.
Transcription
B.
Crossing over
C.
Replication
D.
Translation
Show solution
Solution
Crossing over is the process where homologous chromosomes exchange genetic material, increasing genetic diversity.
Correct Answer:
B
— Crossing over
Learn More →
Q. Which process describes the growth of a plant in response to light?
A.
Phototropism
B.
Gravitropism
C.
Thigmotropism
D.
Hydrotropism
Show solution
Solution
Phototropism is the growth of a plant in response to light direction.
Correct Answer:
A
— Phototropism
Learn More →
Q. Which process describes the growth of a plant towards light?
A.
Phototropism
B.
Gravitropism
C.
Thigmotropism
D.
Hydrotropism
Show solution
Solution
Phototropism is the growth of a plant towards light, driven by differential growth rates.
Correct Answer:
A
— Phototropism
Learn More →
Q. Which process directly follows transcription in the central dogma?
A.
Replication
B.
Translation
C.
Splicing
D.
Translocation
Show solution
Solution
Translation directly follows transcription, where the mRNA is translated into a polypeptide chain at the ribosome.
Correct Answer:
B
— Translation
Learn More →
Q. Which process involves the conversion of light energy into chemical energy in plants?
A.
Respiration
B.
Photosynthesis
C.
Transpiration
D.
Fermentation
Show solution
Solution
Photosynthesis is the process that converts light energy into chemical energy in the form of glucose.
Correct Answer:
B
— Photosynthesis
Learn More →
Q. Which process involves the conversion of mRNA into a protein?
A.
Replication
B.
Transcription
C.
Translation
D.
Translocation
Show solution
Solution
Translation is the process by which the sequence of nucleotides in mRNA is translated into a sequence of amino acids, forming a protein.
Correct Answer:
C
— Translation
Learn More →
Q. Which process involves the synthesis of RNA from a DNA template?
A.
Translation
B.
Replication
C.
Transcription
D.
Mutation
Show solution
Solution
Transcription is the process of synthesizing RNA from a DNA template.
Correct Answer:
C
— Transcription
Learn More →
Q. Which process involves the transfer of genetic material from one generation of plants to the next?
A.
Transcription
B.
Translation
C.
Replication
D.
Inheritance
Show solution
Solution
Inheritance is the process by which genetic material is passed from parents to offspring.
Correct Answer:
D
— Inheritance
Learn More →
Q. Which process involves the transfer of pollen from the male anther to the female stigma?
A.
Fertilization
B.
Pollination
C.
Germination
D.
Photosynthesis
Show solution
Solution
Pollination is the process of transferring pollen to enable fertilization.
Correct Answer:
B
— Pollination
Learn More →
Q. Which process is primarily responsible for the movement of water from roots to leaves in plants?
A.
Transpiration
B.
Photosynthesis
C.
Respiration
D.
Germination
Show solution
Solution
Transpiration is the process that drives the movement of water from the roots through the plant to the leaves.
Correct Answer:
A
— Transpiration
Learn More →
Q. Which process is primarily responsible for the movement of water through xylem?
A.
Active transport
B.
Diffusion
C.
Transpiration
D.
Osmosis
Show solution
Solution
Transpiration creates a negative pressure in the leaves, which pulls water upward through the xylem.
Correct Answer:
C
— Transpiration
Learn More →
Q. Which process occurs during the dark reactions of photosynthesis?
A.
Photolysis of water
B.
Carbon fixation
C.
Light absorption
D.
Oxygen release
Show solution
Solution
Carbon fixation occurs during the dark reactions, specifically in the Calvin cycle.
Correct Answer:
B
— Carbon fixation
Learn More →
Q. Which process occurs during the light reactions of photosynthesis?
A.
Carbon fixation
B.
Water splitting
C.
Glucose synthesis
D.
Oxygen uptake
Show solution
Solution
Water splitting occurs during the light reactions, producing oxygen and electrons.
Correct Answer:
B
— Water splitting
Learn More →
Q. Which process occurs in the dark reactions of photosynthesis?
A.
Photolysis of water
B.
Carbon fixation
C.
Light absorption
D.
Electron transport chain
Show solution
Solution
Carbon fixation occurs during the dark reactions of photosynthesis.
Correct Answer:
B
— Carbon fixation
Learn More →
Q. Which reproductive strategy involves the development of offspring inside the mother's body?
A.
Oviparity
B.
Viviparity
C.
Ovoviviparity
D.
Asexual reproduction
Show solution
Solution
Viviparity is the reproductive strategy where offspring develop inside the mother's body and are born live.
Correct Answer:
B
— Viviparity
Learn More →
Q. Which reproductive strategy involves the production of seeds without fertilization?
A.
Apomixis
B.
Cross-pollination
C.
Self-pollination
D.
Grafting
Show solution
Solution
Apomixis allows plants to produce seeds asexually, bypassing the need for fertilization, which can be advantageous in stable environments.
Correct Answer:
A
— Apomixis
Learn More →
Showing 1561 to 1590 of 1731 (58 Pages)