Sexual Reproduction In Plants
Gbogbo ọrọ náà
A flower is a plant's reproductive factory. Behind the petals that catch your eye is a precise arrangement of male and female parts whose job is to bring two sex cells together and make a seed. Learn to name those parts and say what each one does, and a cut flower stops being decoration and becomes a machine you can read.
In this lesson you will identify every part of an insect-pollinated flower, give each its function, and see how a wind-pollinated flower is built differently for a different delivery method. You will define pollination precisely, separate self-pollination from cross-pollination, and weigh up what each means for the future of a whole population.
Ebumnobi
- Identify in diagrams and images and draw the following parts of an insect-pollinated flower: sepals, petals, stamens, filaments, anthers, carpels, style, stigma, ovary and ovules
- State the functions of the structures listed in 16.3.1
- Identify in diagrams and images and describe the anthers and stigmas of a wind-pollinated flower
- Distinguish between the pollen grains of insect-pollinated and wind-pollinated flowers
- Describe pollination as the transfer of pollen grains from an anther to a stigma
- [Supplement] Describe self-pollination as the transfer of pollen grains from the anther of a flower to the stigma of the same flower or a different flower on the same plant
- [Supplement] Describe cross-pollination as the transfer of pollen grains from the anther of a flower to the stigma of a flower on a different plant of the same species
- [Supplement] Discuss the potential effects of self-pollination and cross-pollination on a population, in terms of variation, capacity to respond to changes in the environment and reliance on pollinators
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 Sexual Reproduction In Plants. 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 flower produces pollen? A. stigma B. anther C. ovary D. sepal Answer: B
- Pollination is best defined as the transfer of pollen grains from: A. one ovary to another B. an anther to a stigma C. a stigma to an ovule D. a petal to a sepal Answer: B
- Which feature is typical of a wind-pollinated flower? A. large brightly coloured petals B. nectar to attract insects C. feathery stigmas hanging outside the flower D. sticky spiky pollen grains Answer: C
- Pollen carried from an anther of one plant to the stigma of a different plant of the same species is an example of: A. self-pollination B. cross-pollination C. fertilisation D. germination Answer: B
- Which set correctly lists the parts of a carpel? A. anther, filament, pollen B. stigma, style, ovary C. sepal, petal, receptacle D. ovary, anther, stigma Answer: B
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 Sexual Reproduction In Plants? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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