Botany and Plant Science

Option 1 is the correct answer because flowers that bear pistils only are called pistillate flowers, which are considered as female flowers, and those that bear stamens only are called staminate flowers, which are considered as male flowers.

Stamen is the male reproductive part of a flower and it produces pollen grains that are yellowish in colour.

It refers to the study of flowers .

The funicle ,chalaza and hilum lie in the same vertical ine.

It is the diploid structure which forms the part of future sporophyte in Cycas.

Gametophytic phase in Pteridophytes is represented by prothallus,  which is independent.and is formed by germinating spore.In pteridophytes a phenomena called alternation of generation is found in which the sporophytic and gametophytic phase alternates.

Ikebana is the traditional Japanese art of flower arrangement, also known as kado. Origami is paper folding, and Bonsai is the art of growing miniature trees.

The fusion of male and female gametes results in the formation of a zygote, which is the first cell of a new organism.

The stamen is the male reproductive organ of a flower, consisting of an anther and a filament. It produces pollen grains.

A stamen is composed of two main parts: the pollen-bearing anther and the supporting stalk called the filament.

The typical angiosperm anther is dithecous, meaning it is bi-lobed, with each lobe containing two pollen sacs.

In Agave, vegetative buds (bulbils) develop in the inflorescence, which is the flower-bearing part of the plant.

The pollen grain wall consists of two layers: the outer exine and the inner intine.

The typical anther wall consists of four layers: epidermis, endothecium, middle layers, and tapetum.

Pollen grains are typically shed at a 2-celled stage containing a vegetative cell and a generative cell, which means they are bi-nucleated. Distractors like uni-nucleated fail to account for the mitotic division of the microspore nucleus.