Plant classification and unicellular algae
Answers are for parents and teachers.
1
Write the systematic units from small to large as a diagram and name each for cotton.
Species: upland cotton; genus: cotton; family: mallow; class: dicots; division: flowering plants.
2
Look up the local and scientific (Latin) names of 5 plants.
E.g. onion — Allium cepa; garlic — Allium sativum; wheat — Triticum aestivum; apple — Malus domestica; cotton — Gossypium hirsutum.
3
Make a slide from aquarium or pond water (with an adult) and draw the alga you see.
Green round cells (Chlorella) or flagellate cells (Chlamydomonas) may be seen.
4
If a Chlorella cell gives 4 young cells in each division, how many cells at most after 3 generations? (4 × 4 × 4)
64
5
Why are algae called “lower plants”? Write 2–3 sentences.
Their body is a simple thallus without root, stem and leaf, with no tissues or organs; they are simpler than higher plants.