ch7-olypiad

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Across
  1. 1. Contraceptive device that prevents implantation without affecting hormone production.
  2. 7. Tiny reproductive units capable of surviving harsh environmental conditions due to their protective covering.
  3. 9. Reproductive strategy where a new organism develops as an external outgrowth before detaching.
  4. 14. Structure that performs two functions—producing female gametes and supporting seed formation after fertilisation.
  5. 19. Process responsible for generating genetic variation among offspring.
  6. 20. Plant structure whose fate changes completely after successful fertilisation.
  7. 21. Process that begins only when environmental conditions become favourable despite the seed remaining alive for long periods.
  8. 22. Site where interruption would prevent fertilisation but not ovulation.
  9. 23. Ability that depends more on specialised cells than merely cutting an organism into pieces.
  10. 24. Organ that requires a lower temperature than normal body temperature for efficient functioning.
  11. 25. First diploid cell formed immediately after the union of male and female gametes.
  12. 28. Essential event that must occur before fertilisation in flowering plants but does not involve fusion of gametes.
  13. 29. Cell division in which one parent produces two genetically identical individuals under favourable conditions.
Down
  1. 2. A microscopic structure that transports male gametes without requiring water in flowering plants.
  2. 3. Organ that provides mechanical protection as well as nourishment to the developing embryo.
  3. 4. Reproductive process possible only in organisms with relatively simple body organisation.
  4. 5. Developmental phase marked by hormonal changes that make reproduction biologically possible.
  5. 6. Mode of reproduction that produces genetically identical offspring without gamete formation.
  6. 8. Biological process essential for continuity of a species but not for the survival of an individual.
  7. 10. Method adopted by Plasmodium to survive and multiply inside its host.
  8. 11. Tube whose blockage forms the basis of a permanent male contraceptive surgery.
  9. 12. Floral part specially adapted to maximise the chances of receiving pollen grains.
  10. 13. Physiological process that indicates the shedding of tissue prepared for a pregnancy that did not occur.
  11. 15. Human gamete that contributes almost all the cytoplasm to the future embryo.
  12. 16. Temporary organ that connects two genetically different individuals without mixing their blood directly.
  13. 17. Biological event that restores the diploid chromosome number.
  14. 18. Contraceptive method that simultaneously prevents fertilisation and reduces transmission of sexually transmitted infections.
  15. 19. Highly specialised cell designed to maximise mobility rather than nutrient storage.
  16. 26. Floral structure whose failure directly prevents seed formation even if all female parts remain functional.
  17. 27. Developmental stage that undergoes repeated mitotic divisions before becoming a foetus.