Q. No.The normal type of embryo sac is 8-nucleated and
(1) 8-celled
(2) 7-celled
(3) 6-celled
(4) 5-celled
Filiform apparatus is characteristic feature of
1. generative cell
2. nucellar embryo
3. aleurone cell
4. synergids
Formation of embryo sac from a single megaspore nuclei is termed as
1. Bishopric development
2. Monosporic development
3. Tetrasporic development
4. Polysporic development
In angiosperms, microsporogenesis and megasporogenesis
(1) occur in anther
(2) form gametes without further divisions
(3) involve meiosis
(4) occur in ovule
Which among the following is not a feature of pistil?
(1) Monocarpellary
(2) Syncarpous
(3) Monosporic
(4) Apocarpous
In Polygonum type of embryo sac, polar nuclei
1. Are haploid
2. Can serve as a precursor of PEN
3. Occur in the large central cell
4. More than one option is correct
Choose the correct match with respect to angiosperm
1. Microsporanigum - ovule; Megasporangium - female gametophyte
2. Megasporangium - ovule; Embryo sac - female gametophyte
3. Megasporangium - female gametophyte; Embryo sac - ovule
4. Nucellus - male gametophyte; Megasporangium - ovule
Which one of the following statements is not true?
| 1. | Filiform apparatus present at the chalazal end of the synergies guides the entry of pollen tube |
| 2. | Pollen - pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen |
| 3. | Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar |
| 4. | Apomixis is a form of asexual reproduction that mimics sexual reproduction |
Match the following:
| 1 | Male gametophyte | I | Embryo sac |
| 2 | Female gametophyte | II | Ovule |
| 3 | Megasporangium | III | Pollen grains |
| 4 | Microsporangium | IV | Pollen sacs |
(1) 1-III ; 2-I ; 3-II ; 4-IV
(2) 1-I ; 2-II ; 3-III ; 4-IV
(3) 1-IV ; 2-III ; 3-II ; 4-I
(4) 1-III ; 2-II ; 3-I ; 4-IV
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?
1. Ovules develop into an embryo sac
2. Ovary develops into fruit
3. Zygote develops into an embryo
4. Central cell develops into endosperm
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