Class 9 Science Exploration Chapter 11 MCQ – Reproduction: How Life Continues – questions will help you revise about reproduction in a clear and organised way. The chapter starts with asexual reproduction, including budding in yeast and hydra, spore formation in bread mould and vegetative propagation methods such as cutting, grafting, layering and tissue culture. It then explains how meiosis creates variation, the parts of a flower, pollination, fertilisation and seed formation. The later sections cover reproductive strategies in animals and human reproduction, including the menstrual cycle, pregnancy and reproductive health and hygiene.
Class 9 Science Exploration Chapter 11 MCQs with Answers
Class 9 Science Chapter 11 MCQs Set 1
Q1. Why is reproduction important for a species?
[A]. It stops all variation
[B]. It produces new individuals and maintains continuity
[C]. It replaces the need for nutrition
[D]. It ensures that every individual lives forever
Q2. Which feature is typical of asexual reproduction?
[A]. Chromosome number doubling each generation
[B]. Two parents always contributing gametes
[C]. Fusion of male and female gametes
[D]. One parent producing genetically similar offspring
Q3. A new plant grows from a potato’s underground stem. What process is this?
[A]. Vegetative propagation
[B]. Pollination
[C]. Seed dispersal
[D]. Fertilisation
Q4. Which plant can produce small plantlets along its leaf margins?
[A]. Pine
[B]. Maize
[C]. Wheat
[D]. Bryophyllum
Q5. Which method joins a stem piece from one plant to a rooted plant?
[A]. Grafting
[B]. Layering
[C]. Spore formation
[D]. Budding in yeast
Class 9 Science Chapter 11 MCQs Set 2
Q6. In layering, when is the buried twig normally separated from its parent plant?
[A]. Before any growth begins
[B]. Before it touches soil
[C]. Only after seed formation
[D]. After it develops roots
Q7. Why is tissue culture useful in crop production?
[A]. It always creates a new species
[B]. It prevents every type of cell division
[C]. It removes the need for nutrients
[D]. It can rapidly produce many plants with desired characteristics
Q8. Which process produces a small outgrowth that develops into a new yeast or hydra individual?
[A]. Pollination
[B]. Seed formation
[C]. Budding
[D]. Ovulation
Q9. How does bread mould commonly spread to new places?
[A]. By seeds
[B]. By pollen grains
[C]. By spores carried in air
[D]. By flowers
Q10. How does mitosis help produce clones in asexual reproduction?
[A]. It produces daughter cells with the same chromosome number and genetic information
[B]. It halves the chromosome number each generation
[C]. It fuses two gametes
[D]. It always doubles the species’ chromosome number
Class 9 Science Chapter 11 MCQs Set 3
Q11. What happens to chromosome number during meiosis?
[A]. It always doubles
[B]. It is reduced to half
[C]. It becomes zero
[D]. It remains doubled permanently
Q12. How many chromosomes are normally present in a human sperm or egg?
[A]. 46
[B]. 92
[C]. 23
[D]. 12
Q13. Why does sexual reproduction produce variation among offspring?
[A]. Only one parent’s chromosomes survive
[B]. All offspring receive identical chromosome combinations
[C]. Gametes carry different combinations of genetic information
[D]. It removes every inherited trait
Q14. Which flower part produces pollen grains?
[A]. Anther
[B]. Stigma
[C]. Sepal
[D]. Ovary
Q15. Which sequence lists the three main parts of a pistil?
[A]. Petal, sepal, anther
[B]. Stigma, style, ovary
[C]. Pollen, seed, fruit
[D]. Anther, filament, sepal
Class 9 Science Chapter 11 MCQs Set 4
Q16. What is pollination?
[A]. Growth of a seed into a plant
[B]. Fusion of sperm and egg
[C]. Transfer of pollen from anther to stigma
[D]. Formation of a zygote
Q17. Which situation is cross-pollination?
[A]. A plant grows from a cutting
[B]. Pollen reaches the same flower’s stigma
[C]. Pollen moves to a flower on another plant of the same species
[D]. Pollen moves to another flower on the same plant
Q18. Which feature helps a wind-pollinated flower receive pollen?
[A]. A fleshy underground stem
[B]. A long, feathery stigma
[C]. A brightly coloured fruit
[D]. A thick seed coat
Q19. Why do many insect-pollinated flowers have bright petals, fragrance and nectar?
[A]. To attract insects that transfer pollen
[B]. To stop insects visiting
[C]. To prevent all fertilisation
[D]. To make the ovary disappear
Q20. What is the main role of the pollen tube?
[A]. To make the petals colourful
[B]. To deliver male gametes towards the ovule
[C]. To carry seeds away
[D]. To form the fruit wall directly
Class 9 Science Chapter 11 MCQs Set 5
Q21. After fertilisation in a typical flowering plant, what do the ovule and ovary become, respectively?
[A]. Fruit and seed
[B]. Petal and sepal
[C]. Stamen and pistil
[D]. Seed and fruit
Q22. Where does external fertilisation occur?
[A]. Always inside a uterus
[B]. Inside the testes
[C]. Only inside a seed
[D]. Outside the female’s body
Q23. Why do many externally fertilising animals release numerous eggs?
[A]. They cannot produce sperm
[B]. Many gametes and young are lost, so large numbers improve reproductive success
[C]. Their eggs contain no genetic information
[D]. Every egg is guaranteed to survive
Q24. Which human organs produce sperm?
[A]. Testes
[B]. Uterus
[C]. Oviducts
[D]. Ovaries
Q25. What is the role of fluids added by the seminal vesicles and prostate?
[A]. They nourish sperm and help their movement
[B]. They form egg cells
[C]. They replace sperm chromosomes
[D]. They produce the uterine lining
Class 9 Science Chapter 11 MCQs Set 6
Q26. What is ovulation?
[A]. Formation of sperm in the testes
[B]. Release of a mature egg from an ovary
[C]. Shedding of the uterine lining
[D]. Fusion of sperm and egg
Q27. Where does fertilisation usually occur in the human female reproductive system?
[A]. Cervix
[B]. Ovary surface
[C]. Uterus wall
[D]. Oviduct
Q28. What is implantation?
[A]. Attachment of the developing embryo to the uterine lining
[B]. Release of an egg from the ovary
[C]. Transfer of pollen to a stigma
[D]. Release of sperm from the testes
Q29. What happens during menstruation?
[A]. The chromosome number doubles
[B]. The uterine lining is shed through the vagina with blood
[C]. An egg divides into sperm
[D]. The entire uterus leaves the body
Q30. How does a barrier contraceptive such as a condom help prevent pregnancy?
[A]. By stimulating ovulation
[B]. By adding chromosomes to sperm
[C]. By preventing sperm from reaching the egg
[D]. By producing more eggs
Learn Faster: 10 Core Facts from Chapter 11 Reproduction
- Asexual reproduction needs only one parent and uses mitosis, so the offspring are genetically identical clones. Sexual reproduction involves two parents and produces variation.
- Vegetative propagation grows new plants from roots, stems or leaves, as in potato, ginger, sugarcane and Bryophyllum. Farmers use cutting, grafting, layering and tissue culture to grow many identical plants quickly.
- Yeast and hydra reproduce by budding. Moulds such as Rhizopus release millions of light spores that spread through the air and germinate in warm, moist conditions.
- Meiosis halves the chromosome number to make gametes, so a human body cell has 46 chromosomes and each sperm or egg has 23. The random mixing of chromosomes explains why siblings look different from each other.
- A complete flower has sepals, petals, stamens (anther and filament) and a pistil (stigma, style and ovary). Each ovule inside the ovary contains an egg cell.
- Pollination is the transfer of pollen from an anther to a stigma. In self-pollination it happens within the same plant, and in cross-pollination it happens between different plants of the same kind. Wind, water, insects and birds act as pollinators.
- After pollination, a pollen tube grows down to the ovule and the male gamete fuses with the egg to form a zygote. The ovule then becomes the seed and the ovary becomes the fruit.
- Fish and frogs have external fertilisation and lay thousands of eggs with low survival. Reptiles, birds and mammals have internal fertilisation, with fewer young ones that have better chances of survival.
- In humans, testes produce sperm and ovaries release an egg about once a month during ovulation. If the egg is not fertilised, the uterine lining sheds during menstruation, which lasts 3–7 days in a cycle of about 28 days.
- A pregnancy lasts about nine months over three trimesters and the embryo is called a foetus from around the ninth week. Condoms help prevent STIs, and prenatal sex determination is banned by law in India.
Quick Revision Pointers for Reproduction MCQs
- Clones come from mitosis, while variation comes from meiosis and fertilisation.
- Wind-pollinated flowers produce huge amounts of pollen and have feathery stigmas. Insect-pollinated flowers are colourful, fragrant and produce nectar.
- Sperm are small, numerous and motile. Eggs are large, few, store nutrients and cannot move.
- The father’s sperm, carrying either X or Y, decides whether the baby is a boy or a girl.
- Ovulation happens around day 14 in a typical cycle, but cycle length varies from person to person.
Practising these Class 9 Science Exploration Chapter 11 MCQs shows how living beings keep their species going, from a single yeast cell budding to a seed growing into a tree. Questions on grafting roses, growing mould on a roti, the pea flower pollination experiment and beekeeping in apple orchards link biology with farming and everyday life. The human reproduction section also builds awareness about health, hygiene and responsible choices. Focus on flow-based questions, such as the order from pollination to seed formation, because they are commonly asked in exams.
Chapter 11 Solutions to Complete Your Revision
Once you finish this quiz, use our NCERT Solutions for Class 9 Science Exploration Chapter 11 to check your answers to the textbook exercises. They explain each answer simply, covering pollination types in tomato, wheat and papaya, the pollen germination experiment, the apple orchard case study, why vegetatively propagated plants are more prone to disease, and the menstrual cycle. Revising MCQs and solutions together will give you a full understanding of “Reproduction: How Life Continues”.
