Neco Model Questions Vol1 2025 Biology Question 15

Practice objective / multiple choice question 15 from the 2025 Neco Model Questions Vol1 Biology examination.

Neco Model Questions Vol1 2025 Biology Objective / Multiple Choice Medium Difficulty
Question 15 NECO_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • objective

A flower has 5 stamens, each producing 100 pollen grains. Only 2 % of the pollen grains reach the stigma of a compatible flower. Of the grains that land, 60 % germinate and grow pollen tubes, and 70 % of the germinated tubes achieve fertilisation of an ovule.\n\na) How many ovules are fertilised per flower?\n\nb) If each fertilised ovule develops into a seed weighing \(0.02\ \text{g}\), calculate the total seed mass produced by the flower.

Answer Options

A. Approximately 3 ovules are fertilised; total seed mass ≈ 0.06 g.
B. Approximately 2 ovules are fertilised; total seed mass ≈ 0.04 g.
Correct Answer C. Approximately 4 ovules are fertilised; total seed mass ≈ 0.08 g.
D. Approximately 5 ovules are fertilised; total seed mass ≈ 0.10 g.
Correct Answer
C
Correct Option:
Approximately 4 ovules are fertilised; total seed mass ≈ 0.08 g.

About This Question

This is Neco Model Questions Vol1 2025 Biology Question 15. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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