Botany and Plant Science

Perianth is the term used when the calyx (sepals) and corolla (petals) are not distinct or are similar in appearance, often found in monocots like lilies.

A complete flower is defined by the presence of all four whorls: calyx, corolla, androecium, and gynoecium. If any of these are missing, the flower is considered incomplete.

Bulbs like onion and garlic are modified shoots where the stem is highly reduced to a disc-like structure. The fleshy leaves attached to this reduced stem store food.

Velamen is a specialized hygroscopic tissue found in the aerial roots of epiphytes, such as orchids, which helps them absorb moisture from the atmosphere.

A flower is considered a modified shoot because it consists of a condensed axis (thalamus) bearing floral appendages (sepals, petals, stamens, carpels) which are homologous to leaves.

While parallel venation is a characteristic of monocots, Smilax is a notable exception among dicots that exhibits parallel venation.

In Nepenthes (pitcher plant), the pitcher is a modification of the leaf lamina, while the lid is formed by the leaf apex and the tendril by the midrib.

Prop roots grow downwards from branches into the soil to provide structural support. Because they grow in the direction of gravity, they are positively geotropic.

Phyllotaxy refers to the pattern or mode of arrangement of leaves on the stem or branch, such as alternate, opposite, or whorled.

Root hairs are unicellular extensions of the epidermal cells found specifically in the region of maturation, where they are responsible for water and mineral absorption.

The capitulum (or head) inflorescence is considered the most highly evolved because it condenses many small flowers into a single structure that mimics a single flower, optimizing pollination efficiency.

After fertilization, the ovary of the flower matures into a fruit, while the ovules inside the ovary develop into seeds.

Cyathium inflorescence is characteristic of family Euphorbiaceae.The flower-like characteristics of the cyathia are underlined by brightly coloured nectar glands and often by petal-like appendages to the nectar glands, or brightly coloured, petal-like bracts positioned under the cyathia.

Micropyle in seed helps the entry of water during germination.The entry of water activates the embryo cells.

A collective fleshy fruit, in which the ovaries are hidden within a hollow receptacle, as in the fig.