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During the development of monosporic development of embryo sac the nucleus of the functional megaspore divides
During the development of a monosporic embryo sac, the nucleus of the functional megaspore undergoes three mitotic divisions to form an 8-nucleate structure. Hence, the correct answer is '3 times'.
Cross pollination has an advantage of
Cross pollination leads to genetic recombination, which increases genetic diversity in the offspring. This genetic diversity can provide a better chance of survival and adaptation to changing environments. Therefore, the correct answer is 'Genetic recombination'.
Unisexual flowers prevent
Unisexual flowers have either male or female reproductive organs, but not both. This prevents self-pollination because the flowers cannot fertilize themselves. They rely on cross-pollination from another flower.
The function of the filiform apparatus is
The filiform apparatus, found in the synergids of the ovule, guides the pollen tube to ensure that it reaches the egg cell for fertilization.
Which one of the following is an example of free-nuclear endosperm
Coconut water is an example of free-nuclear endosperm. In this type of endosperm, nuclear divisions occur without immediate cell wall formation, resulting in a liquid endosperm.
The protective cover of the radicle in maize seed is called
In maize seeds, the radicle (embryonic root) is protected by a sheath called the coleorhiza. This structure helps in safeguarding the radicle as it emerges during germination. Hence, the correct answer is coleorhiza.
Stamen show homology with
The stamen is homologous to the microsporophyll in plants. Both structures are involved in the production of male gametes. In flowering plants, the stamen is the male reproductive organ that produces pollen, while in gymnosperms, the microsporophyll bears the microsporangia that produce pollen grains. Thus, the correct answer is microsporophyll.
which of the folowing is a common substrate in the respiratory pathway of glucose ,proteins and fatty acid ?
factual
Scutelum is
The scutellum is a shield-like cotyledon found in the embryos of grasses, particularly in the family Poaceae. It is part of the embryo that helps in the absorption of nutrients from the endosperm during germination.
Which one of the following floats in the cytoplasm of the vegetative cell ?
In the pollen grain of flowering plants, the generative cell (which later divides to form two male gametes) floats in the cytoplasm of the vegetative cell. The vegetative cell is responsible for forming the pollen tube.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.