Experiment 18 — From Pollen to Seed

Topic: Biology · Class 10 · How do organisms reproduce: sexual reproduction in plants

Aim: Put the four stages of seed formation in order, and identify the part that becomes the fruit.

Daily: Every mango, every grain of wheat and every mustard seed began with a pollen grain landing on a stigma. Bees, wind and water do most of this work — which is why pollinators matter so much to farming.

Question: Which part of the flower develops into the fruit?

Exp: The ovary becomes the fruit; the ovules inside become seeds.

Exp: Fertilisation happens afterwards.

Question: Reproduction in Rhizopus (bread mould) is by…

Exp: Spores are released from sporangia.

Question: Growing sugarcane from stem cuttings is…

Exp: The offspring are genetically identical.

Question: The main advantage of sexual reproduction is…

Exp: Variation is the raw material of evolution.