Filiform apparatus is a characteristic feature of?
1. Generative cell
2. nucellar embryo
3. aleurone cell
4. synergids
In angiosperms, microsporogenesis and megasporogenesis?
1. Occur in anther
2. Form gametes without further divisions
3. Involve meiosis
4. Occur in ovule
Function of filiform apparatus is to:
1. | Recognize the suitable pollen at the stigma |
2. | Stimulate division of generative cell |
3. | Producer nectar |
4. | Guide the entry of the pollen tube |
The gynoecium consists of many free pistils in flowers of:
1. Aloe
2. Tomato
3. Papaver
4. Michelia
1. egg
2. synergid
3. zygote
4. suspensor
In angiosperms, functional megaspore develops into:
1. Pollen sac
2. Embryo sac
3. Ovule
4. Endosperm
1. | it helps in the entry of pollen tube into the synergid |
2. | it prevents the entry of more than one pollen tube into the embryo sac |
3. | it brings about the opening of the pollen tube |
4. | it guides the pollen tube from the synergid to the egg |
Which one of the following is surrounded by a callose wall?
1. Microspore mother cell
2. Male gamete
3. Egg
4. Pollen grain