In angiosperms, the tapetum is responsible for providing nutrients to developing pollen grains. Which layer of the anther wall gives rise to the tapetum?
Q.342Easy
Which of the following is true about microsporogenesis in plants?
Q.343Medium
A plant exhibits heterospory with distinct megaspores and microspores. This characteristic is found in:
Q.344Easy
The embryo sac in angiosperms is typically a seven-celled, eight-nucleate structure. Which cells are located at the micropylar end?
Q.345Medium
In a mature anther, what is the primary function of the fibrous thickening in the endothecium?
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Q.346Easy
Double fertilization in angiosperms results in the formation of:
Q.347Medium
Which of the following statements about megagametogenesis (female gametophyte formation) is correct?
Q.348Medium
The synergids in the embryo sac are believed to have evolved for:
Q.349Medium
Which type of placentation is found in the ovary of legumes and has ovules attached to the ventral suture?
Q.350Medium
Pollen grains of which plant show the longest viability period under room temperature?
Q.351Easy
In the typical angiosperm flower, after anther dehiscence, pollen grains are released in which stage of pollen development?
Q.352Hard
The phenomenon of pollen dimorphism is observed in which type of flowers?
Q.353Hard
Which of the following represents the correct ploidy level progression during the life cycle of a typical angiosperm?
Q.354Easy
The integuments of an ovule serve primarily to:
Q.355Hard
In apomixis, the formation of seeds without meiosis and fertilization occurs through which mechanisms?
Q.356Medium
Which statement about the generative cell in pollen is incorrect?
Q.357Medium
The phenomenon of protandry in flowers refers to:
Q.358Medium
In monocarpellary ovaries, marginal placentation occurs in plants like:
Q.359Medium
Which of the following is a correct statement about mature embryo sac organization in angiosperms?
Q.360Easy
The ovule of a typical angiosperm is attached to the placenta through which structure?
