Germination
Muhtasari
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.
Malengo
- (a) describe seed structure and the germination of maize and bean (or other legume) and understand the conditions required for germination.
Somo la Sauti
Sikiliza somo hili kwenye programu
Ramani ya mawazo
Mada hii imechorwa ili uone jinsi mawazo yanavyounganika.
Fungua ramani ya mawazo kwenye programu
Kadi za kumbukumbu
Mazoezi ya haraka ya kumbukumbu kuhusu kinachopimwa katika mada hii.
Fanya mazoezi ya kadi hizi kwenye programu
Maelezo ya Somo
Dokezo Kamili la Somo Linapatikana kwenye Programu ya Green Bridge
Pata programu ya Green Bridge CBT kwenye simu au kompyuta yako kwa maktaba kamili ya IGCSE: mitihani ya miaka iliyopita, miongozo ya usahihishaji, ramani za mawazo, kadi za marudio na masomo ya sauti.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Germination. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- 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
Fanyia kazi maswali haya kwenye programu
Fanyia kazi maswali haya kwenye programu
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Germination? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
