Germination
Gbogbo ọrọ náà
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.
Ebumnobi
- (a) describe seed structure and the germination of maize and bean (or other legume) and understand the conditions required for germination.
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Germination. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- 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
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Germination? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Dawunlodi Ẹpp naa lori Google Playstore.
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
