Fruit and Seed Dispersal Test

An achene is a dry, indehiscent fruit where the seed coat remains separate from the pericarp (fruit wall). In contrast, cypsela is similar but develops from an inferior ovary, nut has a hard woody wall, and samara has wing-like extensions for wind dispersal.

False fruits develop from parts other than the ovary, typically the receptacle (as in apple, where the edible part is receptacle tissue) or calyx. True fruits develop only from the ovary, while aggregate fruits come from multiple ovaries of one flower, and composite fruits develop from inflorescences.

Caryopsis is a single-seeded fruit where the dry papery seed coat remains permanently fused with the pericarp (fruit wall), typical of grasses like wheat, rice, and maize. Achene has a separate seed coat, cypsela has a pappus, and samara has wing-like extensions.

Composite or multiple fruits (like pineapple, fig, mulberry) develop from the entire inflorescence (cluster of flowers), where each flower produces a fruit that fuses into a single structure. Simple fruits develop from a single ovary, and aggregate fruits develop from multiple separate ovaries of a single flower.

True fruits develop from the ovary after fertilization. False fruits (pseudocarps) develop from other floral parts like the calyx (as in apple), thalamus (as in strawberry), or receptacle, where the ovary is incorporated into the fruit structure.

A mature fruit is botanically defined as a ripened ovary. After fertilization, the ovary wall develops into the fruit wall (pericarp) that protects the seeds. This is why all fruits contain seeds.

 A fruit wall developed from ovary is called pericarp.

Parthenocarpy is the natural or artificially induced production of fruit without fertilization of the ovules, resulting in seedless fruits.

A nut is a dry, indehiscent, one-seeded fruit characterized by a hard, woody pericarp. Achenes and caryopses have thinner pericarps, while cypsela is specific to the Asteraceae family.

A samara is a dry, indehiscent fruit where the pericarp develops into a wing-like structure to aid in wind dispersal. Examples include maple and ash trees.

A legume (or pod) is a simple dry fruit that develops from a monocarpellary ovary and dehisces along both the ventral and dorsal sutures. It is characteristic of the Fabaceae family.

A capsule is a dry dehiscent fruit formed from two or more fused carpels, typically containing many seeds. It is a very common type of fruit in many flowering plants.

A follicle is a dry dehiscent fruit that develops from a single carpel and opens along only one side (the ventral suture). This distinguishes it from a legume, which opens on two sides.

An aggregate fruit is formed from a single flower that has multiple, separate (apocarpous) pistils. Each pistil develops into a small fruitlet, and the collection is considered one aggregate fruit.

An etaerio is the specific botanical term for an aggregate fruit consisting of a cluster of fruitlets derived from the separate carpels of a single flower.

Wings are thin, flat membranous appendages on fruits and seeds that aid in wind dispersal. Examples include samara fruits. Hairs and light seeds/fruits are different dispersal mechanisms, and 'Censer mechanisms' appears to be a typo or nonsensical term.

 Parthenocarpy can also be induced artificially by spraying the flowers with growth promoting hormones called auxins.

In ash, maple, and shorea, the wing-like structure is an extension of the fruit wall (pericarp), making these winged fruits rather than winged seeds.

In many members of the Asteraceae family, the calyx is modified into a feathery or hair-like structure called a pappus, which aids in wind dispersal.

Explosive mechanisms involve the rapid, forceful dehiscence of a fruit, which ejects seeds away from the parent plant. This is common in plants like touch-me-not (Impatiens).

When the style of a flower remains attached to the fruit and becomes feathery or plume-like, it is known as a persistent hairy style, which assists in wind dispersal.

When animals consume fleshy fruits, the seeds often pass through their digestive tracts unharmed and are deposited in new locations, facilitating dispersal.

Animals like squirrels often cache nuts in the ground for later consumption. If the animal forgets the location, the nuts may germinate, effectively dispersing the plant.

The pericarp of a fruit is divided into three layers: the outer epicarp, the middle mesocarp, and the inner endocarp.

Mistletoe seeds are covered in a sticky substance called viscin, which allows them to adhere to the beaks or feet of birds, helping them spread to other trees.