| 61. | By whom is pollination done in fragrant flowers? |
A. by air | |
B. by water | |
C. by insect | |
D. by bird |
| 62. | Pollen grains are – |
A. underdeveloped fetus | |
B. underdeveloped male gametophyte | |
C. spore mother cell | |
D. a male sperm cell |
| 63. | Pollen grains of flowers pollinated by insects are _____? |
A. smooth and dry | |
B. rough and sticky | |
C. rough and dry | |
D. large and visible |
| 64. | Fertilization is the process of – |
A. fusion of a male gamete to an ovum | |
B. transfer of pollen from anther to stigma | |
C. fusion of male gametes with polar nuclei | |
D. formation of seed from ovule |
| 65. | After fertilization the pistil of seeds develops in- |
A. from the covers | |
B. from the endosperm | |
C. from the department | |
D. from ovule |
| 66. | Double fertilization takes place – |
A. Bryophytes | |
B. of pteridophytes | |
C. gymnospermous | |
D. angiosperms |
| 67. | Parthenogenesis takes place in – |
A. development of fruit without hormones | |
B. development of fruit without fertilization | |
C. development of egg without fertilization | |
D. embryo development without fertilization |
| 68. | Development of an ovary into a fruit without fertilization is called – |
A. syngenesis | |
B. Parthenocarpy | |
C. apospory | |
D. apogamy |
| 69. | Which of the following fruits is infertile? |
A. done | |
B. Apple | |
C. Mulberry | |
D. Strawberry |
| 70. | In which of the following is the pulpy thalamus edible? |
A. Common | |
B. Orange | |
C. tomato | |
D. Apple |