Plant phylogeny
Answers are for parents and teachers.
1
In a plant with 2n = 24 chromosomes, how many chromosomes does a gamete have?
12
2
Maize has n = 10. How many chromosomes does an endosperm cell (3n) have?
30
3
Write two differences in reproduction between spore and seed plants.
Spore plants: water needed, spore unicellular; seed plants: pollen tube, seed multicellular with food reserve.
4
What is the importance of the flower and fruit?
The flower ensures pollination and fertilisation, the fruit protects and disperses the seed.
5
List the periods of the Paleozoic Era from oldest to youngest.
Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian.