Autumn changes and vegetative propagation
Answers are for parents and teachers.
1
Collect 5 tree leaves in autumn, mount them on herbarium sheets and write their names.
Depends on observation: e.g. mulberry, poplar, plane, willow, walnut.
2
Explain the meaning of leaf fall in 3 sentences.
Waste is removed; water loss in winter stops; the plant enters dormancy.
3
Root a pelargonium or tradescantia cutting at home, observe for 2 weeks and record the result.
White roots appear in water within 1–2 weeks.
4
A grape cutting is 50 cm; there are 12 cuttings. What is the total length in cm? (50 × 12)
600
5
Write one advantage and one disadvantage each of asexual and sexual reproduction.
Asexual: fast, variety preserved, but offspring identical — may all be vulnerable to disease. Sexual: varied offspring, but slower and parent traits may not be kept.