Germination
Overview
A dry seed looks lifeless, yet inside it a tiny plant is waiting, folded around its own packed lunch. Give it water, air and a little warmth and it wakes up: the root pushes down, the shoot pushes up, and within days a new crop is on its way. Every field a farmer plants starts with this one event, germination, and getting it right is the difference between a full stand of healthy seedlings and a patchy, gappy field.
In this lesson you will open up a bean seed and a maize grain to see how they are built, follow them step by step as they germinate, and pin down exactly what conditions a seed needs to start. You will learn why soil that is too wet can drown a seed even though seeds need water, and why a good seedbed and the right planting time matter so much for germination.
Objectives
- (a) describe seed structure and the germination of maize and bean (or other legume) and understand the conditions required for germination.
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Mind map
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Flashcards
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Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Germination. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which part of a seed grows first during germination? A. Plumule B. Radicle C. Testa D. Cotyledon Answer: B
- In a maize grain, the food for the germinating embryo is stored in the: A. Testa B. Radicle C. Endosperm D. Plumule Answer: C
- Which of these is NOT needed for most crop seeds to germinate? A. Water B. Oxygen C. A suitable temperature D. Light Answer: D
- A germinating seed needs oxygen mainly for: A. Photosynthesis B. Respiration C. Transpiration D. Pollination Answer: B
- Of 80 seeds tested, 72 germinate. The percentage germination is: A. 72% B. 80% C. 90% D. 8% Answer: C
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