Common General Science
Biology — Plants, Photosynthesis, Reproduction
15 questions on plant biology, photosynthesis, reproduction, and classification from NCERT.
Biology — Plants, Photosynthesis, Reproduction
15 questions · 10 minutes
10:00
Q1.Photosynthesis takes place in:
Explanation: Chloroplasts contain chlorophyll that absorbs sunlight for photosynthesis.
Q2.The green pigment in plants is:
Explanation: Chlorophyll absorbs sunlight (mainly red and blue) and reflects green — making plants look green.
Q3.The gas released during photosynthesis is:
Explanation: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂. Plants release oxygen as a byproduct.
Q4.The part of the plant that absorbs water from soil is:
Explanation: Root hairs absorb water and minerals from the soil through osmosis.
Q5.Pollination is:
Explanation: Pollination = transfer of pollen grains from anther to stigma. Done by wind, insects, birds, water.
Q6.The process of water loss from leaves is:
Explanation: Transpiration = loss of water vapour through stomata in leaves. Creates suction for water uptake.
Q7.Stomata are found on:
Explanation: Stomata are tiny pores on leaf surfaces that allow gas exchange (CO₂ in, O₂ out) and transpiration.
Q8.The male reproductive part of a flower is:
Explanation: Stamen (anther + filament) is the male part. Pistil (stigma + style + ovary) is the female part.
Q9.Seeds are formed from:
Explanation: After fertilisation, ovules develop into seeds and the ovary develops into fruit.
Q10.Nitrogen fixation is done by:
Explanation: Rhizobium bacteria in root nodules of leguminous plants fix atmospheric nitrogen into usable form.
Q11.The powerhouse of the cell is:
Explanation: Mitochondria perform cellular respiration, producing ATP (energy) — hence 'powerhouse of the cell'.
Q12.Cell wall is found in:
Explanation: Plant cells have a rigid cell wall (made of cellulose) outside the cell membrane. Animal cells don't.
Q13.The basic unit of classification is:
Explanation: Species is the basic unit of biological classification. Hierarchy: Kingdom > Phylum > Class > Order > Family > Genus > Species.
Q14.Mushrooms belong to:
Explanation: Mushrooms are fungi — they are neither plants nor animals. They decompose organic matter.
Q15.Amoeba reproduces by:
Explanation: Amoeba reproduces asexually by binary fission — splitting into two daughter cells.
Score: 0 / 15
PSC Score (with -0.33): 0 / 15
0 correct (+1 each) ·
0 wrong (-0.33 each) ·
0 unanswered (0)
0% accuracy ·
Time: 00:00
Score saved!
View My Scores Dashboard → Want to save this score and track your progress?