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.42Easy
Which of the following is true about microsporogenesis in plants?
Q.43Medium
A plant exhibits heterospory with distinct megaspores and microspores. This characteristic is found in:
Q.44Easy
The embryo sac in angiosperms is typically a seven-celled, eight-nucleate structure. Which cells are located at the micropylar end?
Q.45Medium
In a mature anther, what is the primary function of the fibrous thickening in the endothecium?
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Q.46Easy
Double fertilization in angiosperms results in the formation of:
Q.47Medium
Which of the following statements about megagametogenesis (female gametophyte formation) is correct?
Q.48Medium
The synergids in the embryo sac are believed to have evolved for:
Q.49Medium
Which type of placentation is found in the ovary of legumes and has ovules attached to the ventral suture?
Q.50Medium
Pollen grains of which plant show the longest viability period under room temperature?
Q.51Easy
In the typical angiosperm flower, after anther dehiscence, pollen grains are released in which stage of pollen development?
Q.52Hard
The phenomenon of pollen dimorphism is observed in which type of flowers?
Q.53Hard
Which of the following represents the correct ploidy level progression during the life cycle of a typical angiosperm?
Q.54Easy
The integuments of an ovule serve primarily to:
Q.55Hard
In apomixis, the formation of seeds without meiosis and fertilization occurs through which mechanisms?
Q.56Medium
Which statement about the generative cell in pollen is incorrect?
Q.57Medium
The phenomenon of protandry in flowers refers to:
Q.58Medium
In monocarpellary ovaries, marginal placentation occurs in plants like:
Q.59Medium
Which of the following is a correct statement about mature embryo sac organization in angiosperms?
Q.60Easy
The ovule of a typical angiosperm is attached to the placenta through which structure?
