Give the technical description of the anthers of Allium cepa.

Very Short Answer Questions · Q8

Q. Give the technical description of the anthers of Allium cepa.

Telangana TsbieTextbookSubjectiveImportance★★★★★

59% · 22/37 Questions

🔒 Locked · start free trial →

You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.

Start your 14-day free trial to unlock the full solution →

Concept understanding — Family Liliaceae

The Lily Family — An Intuitive Start

Imagine a flower that is perfectly symmetrical, with parts arranged in neat groups of three. That is the signature of the lily family, Liliaceae. Think of the common lily you see in gardens — six petals (or what look like petals), six stamens, and a three-lobed ovary at the centre. That repeating pattern of three is the family's fingerprint.

Why three? It is a deep evolutionary trait. Monocot plants — the group that includes lilies, grasses, orchids, and palms — almost always have floral parts in multiples of three. Liliaceae is the classic example of this monocot floral plan.

The Precise Statement

Liliaceae is a family of monocotyledonous flowering plants. Its diagnostic features are:

Trimerous flowers — all floral whorls (sepals, petals, stamens, carpels) are in sets of three or multiples of three.
Tepals — sepals and petals are identical in colour and texture, so they are not called separate sepals and petals but collectively called tepals. They are arranged in two whorls of three each (3+3).
Androecium — six stamens, arranged in two whorls of three.
Gynoecium — a syncarpous (fused) ovary made of three carpels. The placentation is axile: the ovules are attached along the central axis where the carpels meet.
Ovary position — superior (above the attachment of other floral parts).

\oplus \ \P \ P_{3+3} \ A_{3+3} \ G_{\underline{(3)}}

Why These Features Matter

The trimerous plan and tepals together distinguish Liliaceae from many other families. Compare with a rose (family Rosaceae): a rose has five petals, many stamens, and separate green sepals — none of that matches the lily pattern.

Axile placentation means that if you cut a lily ovary crosswise, you see three compartments (locules) with ovules arranged around a central column. This is different from marginal placentation (as in peas) or parietal placentation (as in mustard).

Tip

To remember the lily family, think 3-3-6-3: 3 sepals (tepals), 3 petals (tepals), 6 stamens, 3 fused carpels. Everything comes in threes or sixes.

Common Examples

Lilium (true lily)
Tulipa (tulip)
Allium (onion, garlic — yes, they are lilies too!)
Asparagus (asparagus)
Aloe (aloe vera) …

Start your 14-day free trial to unlock the full solution →

[!ANSWER] The anthers of Allium cepa are dithecous, basifixed, introrse, and dehisce longitudinally, and they belong to an androecium of six stamens arranged in two whorls of three.

Each anther is described as dithecous, meaning it consists of two thecae or pollen sacs, the typical condition for a flowering-plant anther. The attachment of the anther to the filament is basifixed, meaning the filament meets the anther at its base rather than at its middle (versatile attachment) or along its back; a basifixed anther is therefore relatively fixed in orientation rather than able to swing freely. The anthers are introrse, meaning they face inward toward the centre of the flower, so that when pollen is shed it is released toward the gynoecium at the flower's centre rather than outward, away from it. Finally, the mode of anther dehiscence is longitudinal, meaning each anther opens along a lengthwise slit running down its side, the common mode of pollen release in this family. …

Start your 14-day free trial to unlock the full solution →

←Previous question · 6Q7 — Give the technical description of the ovary in Solanum nigrum.→Next question · 6Q1 — Give a semi-technical description of a typical flowering plant.

Q.Give the technical description of the anthers of Allium cepa.

🎓Unlock everything free for 14 days

Unlock everything free for 14 days