Question 1. Vegetative propagation is the term used for
Question 2. Which of the following is not used for vegetative propagation?
Question 3. Which of the following options shows two plants in which new plantlets arise from the same organ?
Question 4. Meiosis does not occur in
Question 5. A diploid parent plant body produces ________ gametes and a haploid parent plant body produces ________ gametes.
Question 6. Which of the following organisms has the highest number of chromosomes?
Question 7. In maize, a meiocyte has 20 chromosomes. What will be the number of chromosomes in its somatic cell?
Question 8. If a butterfly has chromosome number 360 in its meiocyte (2n). What will be the chromosome number in its gametes?
Question 9. Which of the following options correctly identifies artificial and natural methods of vegetative propagation? Artificial methods – Natural methods
Question 10. Sexual reproduction is considered more beneficial than asexual reproduction because
Question 11. Development of new individual from female gamete without fertilisation is termed as
Question 12. Fertilisation cannot occur in absence of surface water in
Question 13. Spirogyra is a sexually reproducing alga in which vegetative thallus is haploid. In Spirogyra, meiosis
Question 14. In flowering plants, both male and female gametes are non-motile. The method to bring them together for fertilisation is
Question 15. In which of the following plants, sepals do not fall off after fertilisation and remain attached to the fruit?
Question 16. The wall of the ovary forms
Question 17. The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because
Question 18. The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively
Question 19. Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
Question 20. There is no natural death in single celled organisms like Amoeba and bacteria because
Question 21. There are various types of reproduction. The type of reproduction adopted by an organism depends on
Question 22. Which of the following is a post-fertilisation event in flowering plants?
Question 23. The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be
Question 24. The growth phase of an organism before attaining sexual maturity is referred to as
Question 25. Select the monocarpic plant out of the following.
Question 26. Clear cut vegetative, reproductive and senescent phases cannot be observed in
Question 27. Strobilanthus kunthiana flowers once in
Question 28. Strobilanthus kunthiana differs from bamboo in
Question 29. Oestrous cycle is reported in
Question 30. Which of the following animals show menstrual cycle?
Question 31. Senescent phase of an organism’s life span can be recognised by
Question 32. If a fungal thallus has both male and female reproductive structures, it will be called
Question 33. Staminate flowers produce
Question 34. Single-celled animals are said to be immortal because
Question 35. Which of the following has the longest life span?
Question 36. Select the option which arrnages the given organisms in ascending order of their life span.
Question 37. ________ is a life process that is not essential for an individual’s survival but for survival of the species.
Question 38. ‘Clones’ are individuals that have exactly the same
Question 39. Which one of the following processes results in the formation of clone of bacteria?
Question 40. Asexual reproduction is seen in members of Kingdom
Question 41. During binary fission in Amoeba which of the following organelles is duplicated?
Question 42. Fleshy buds produced in the axil of leaves, which grow to form new plants when shed and fall on ground, are called
Question 43. In which one pair, both the plants can be vegetatively propagated by leaf pieces?
Question 44. If a leaf cell of Agave has x chromosomes then what will be the number of chromosomes in a cell of its bulbil?
Question 45. Which of the following cannot serve as a vegetative propagule?
Question 46. Life begin in all sexually reproducing organisms as a
Question 47. Which of the following is not correct regarding sexual reproduction ?
Question 48. Offsprings of oviparous animals are at greater risk of survival as compared to those of viviparous animals because
Question 49. Deposition of calcareous shell around zygote occurs in
Question 50. Select the option which shows viviparous animals only,