A) To study molecular interactions and gamete fusion B) To eliminate the need for pollen grains C) To prevent cross-pollination D) To increase the size of the seeds
A) The inability of pollen to germinate in vitro B) Lack of adequate nutrients in the laboratory C) High temperatures required for the process D) Confinement of gametes in pollen tubes and embryonic sacs
A) Rose plants B) Poppy plants C) Tulip plants D) Orchid plants
A) Hybrid fertilization B) Artificial pollination C) Micro-propagation D) Test-tube fertilization
A) Microspore B) Embryonic sac C) Carpel D) Ovule
A) Within the anther B) Within the pollen tube C) Within the ovule D) Within the stigma
A) Micropyle B) Style C) Carpel D) Stamen
A) Microsporocyte B) Megasporocyte C) Synergid D) Antipodal
A) Two B) One C) Four D) Three
A) One B) Three C) Four D) Two
A) Eight B) Six C) Ten D) Four
A) Polar nuclei B) Antipodal nuclei C) Synergid nuclei D) Egg nuclei
A) Attraction and guidance of the pollen tube B) Formation of the seed coat C) Production of sperm cells D) Protection of the ovary
A) Carpels B) Pollen grains C) Stigmas D) Ovules
A) In the microsporangia B) In the central cell C) In the synergids D) In the micropyle
A) Microsporocytes B) Megasporocytes C) Antipodal cells D) Polar nuclei
A) Four haploid microspores B) One haploid megaspore C) Eight haploid nuclei D) Two diploid microspores
A) Two sperm cells B) Two synergid cells C) Generative cell and tube cell D) Egg cell and sperm cell
A) Meiosis of the microspore B) Mitosis of the generative cell C) Mitosis of the tube cell D) Fusion of the synergids
A) Ovule B) Pollen tube C) Stigma D) Spore wall
A) Anther B) Microsporangia C) Stigma D) Micropyle
A) Coniferales B) Gnetales C) Cycadales D) Ginkgoales
A) Uninucleate B) Trinucleate C) Multinucleate D) Binucleate
A) It is degraded immediately B) It fuses with the primary zygote C) It fertilizes an additional egg nucleus D) It becomes part of the endosperm
A) Provides nutrients to the zygote B) Develops into an embryo C) Forms the seed coat D) Functionally useless
A) One B) Two C) Three D) Four
A) It provides nutrition for the primary embryo B) It is aborted C) It becomes a dormant seed D) It grows alongside the primary embryo
A) The female gametophyte B) The second fertilization product C) The zygote cytoplasm D) The pollen tube
A) Haploid B) Tetraploid C) Diploid D) Triploid
A) It involves more sperm cells B) It results in polyploidy C) It does not produce separate endosperm D) It happens outside the ovule
A) Angiosperms B) Conifers C) Ferns D) Mosses
A) Conifer hypothesis B) Gnetophyte-Angiosperm convergence hypothesis C) Gymnosperm-Angiosperm evolution hypothesis D) Anthophyte hypothesis
A) Convergent evolution B) Recent mutation C) Horizontal gene transfer D) Common ancestry
A) Gymnosperms B) Angiosperms C) Bryophytes D) Pteridophytes
A) Central cell B) Stigmatic surface C) Micropyle D) Style
A) 3 B) 7 C) 8 D) 1
A) Germination B) Syngamy C) Triple fusion D) Mitosis
A) Nourish the developing embryo B) Disperse the pollen C) Form the carpel D) Protect the pollen grain
A) Pollen grain B) Seed C) Fruit D) Stigma
A) Half B) Triple C) Equal D) Double
A) Gnetales B) Arabidopsis thaliana C) Lilium martagon D) Fritillaria tenella
A) Only in Lilium B) No C) Only in flowering plants D) Yes |