Join the stamens
"Join the stamens" is a free, interactive Class 11 Biology simulation for NEET, built on the NCERT section "Androecium" in Morphology of Flowering Plants. Fuse stamen filaments into one, two or many bundles and attach stamens to petals or a perianth; the flower is named monoadelphous/diadelphous/polyadelphous and epipetalous/epiphyllous as you build. NEET has asked about this idea 4 times in 10 years of papers.
From the lesson Androecium in Morphology of Flowering Plants. Change the values and watch what happens.
What it shows
NCERT §5.5.1.3
Fuse stamen filaments into one, two or many bundles and attach stamens to petals or a perianth; the flower is named monoadelphous/diadelphous/polyadelphous and epipetalous/epiphyllous as you build.
Controls
3 to try
- Slidernumber of filament bundles 0 (free) – 5
- Segmentedattach stamens to thalamus / petals / perianth
- Segmentedtarget flower china rose / pea / citrus / brinjal / lily
Try this
Build the pea androecium (9 + 1 diadelphous) and the lily (epiphyllous) arrangement.
Common mistake
Lily stamens called epipetalous; pea called monoadelphous.
In NEET
10 years of papers
Asked 4 times in 10 years of NEET.
See the past questions: Morphology of Flowering Plants (chapter)
The idea behind it
NCERT §5.5.1.3
- The androecium is made of stamens. Each stamen is a male reproductive organ with a stalk, the filament, and an anther.
- An anther normally has two lobes, and every lobe holds two pollen-sacs, the chambers in which pollen grains form. A typical anther therefore has four pollen-sacs.
- A sterile stamen is called a staminode.
- Epipetalous: stamens attached to the petals, as in brinjal. Epiphyllous: stamens attached to the perianth, as in lily.
- Polyandrous: the stamens stay free of each other.
- Monoadelphous: stamens united into one bundle, as in china rose. Diadelphous: two bundles, as in pea. Polyadelphous: more than two bundles, as in citrus.
- Filament length can differ among the stamens of one flower, as in Salvia and mustard.
Questions
4 answers
- What does the "Join the stamens" simulation show?
- Fuse stamen filaments into one, two or many bundles and attach stamens to petals or a perianth; the flower is named monoadelphous/diadelphous/polyadelphous and epipetalous/epiphyllous as you build.
- What mistake does the "Join the stamens" simulation fix?
- A common mistake it clears up: lily stamens called epipetalous; pea called monoadelphous.
- Has NEET asked about this idea?
- Yes. NEET has asked about this idea 4 times in 10 years of papers.
- Is this simulation free?
- Yes. It is free and runs in the browser on a phone or a laptop. It belongs to the lesson "Androecium" in Morphology of Flowering Plants (Class 11 Biology).
Embed this simulation
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