Sexual Reproduction in Flowering Plants MCQs for NEET — Botany Questions with Answers

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.

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.

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.

In flowering plants, each ovule typically produces one female gamete, also known as the egg cell. This egg cell is fertilized by a male gamete (sperm cell) to form a zygote, which eventually develops into an embryo.

The hilum of the ovule represents the junction between the funicle and the ovule. The funicle is the stalk-like structure that attaches the ovule to the placenta, and the hilum is the point of attachment.

The proximal sterile part of the stamen is called the filament. The filament is the stalk that supports the anther, which is the part of the stamen that produces pollen.

The style is the sterile region between the stigma and the ovary in the structure of a flower. It serves as a conduit for pollen tubes to travel from the stigma to the ovary.

The chalaza is the region at the opposite end of the micropylar region of an ovule. It is where the integuments and nucellus are joined and provides structural support to the ovule.

Apomixis is the process of asexual reproduction that leads to seed formation without fertilization. It allows plants to produce offspring that are genetically identical to the parent plant.

In wheat plants, the root cell is diploid (2n) and has 42 chromosomes. The synergid cell is part of the female gametophyte, which is haploid (n). Therefore, it will have half the number of chromosomes as the diploid cell. So, the number of chromosomes in the synergid cell is 42/2 = 21.