Mene ne sepal? Tsari da kuma aiki

Mene ne sepal? Me ya sa suka kira shi? A flower a kan shuka ore, kewaye da kore ganye. A fitai da toho, su zama ganuwa support petals. Sepals, mafi sau da yawa kore (leafy), amma akwai ban (spade). Alal misali, a farkon flowering orchids bayan da suka yi da launuka na flower, juya a cikin sepals, petals. Waɗannan sũ ne daga marigold da anemones. The tarin kofin ma'anar sepals.

Su fahimci abin da sepals, kana bukatar ka yi nazarin su asalin. Bisa ga tsarin siffofin da suka yi kama da doki vegetative bar. Wasu shuke-shuke iya gani a sumul miƙa mulki daga da su zuwa ga sepals. Akwai da dama daga launuka, a cikin abin da ba babu irin wannan ilimi, alal misali, da anemones.

ayyuka sepals

Fahimtar abin da sepals zo bayan tabbatar da dalilin da ta abubuwan da flower. Wannan bangare na flower yana da wani muhimmin aiki ga shuke-shuke.

1. Qumshi kariya ba tukuna a blossoming flower da riga kafa tayi.

2. Idan sepals da koren launi, sa'an nan duk ganye, yin tsari na photosynthesis, Ina nufin sha carbon dioxide da kuma sakin oxygen.

3. Aikin wani goyon aiki ga flower corolla.

tsarin

Ka yi la'akari da abin da sepal a kan tsarinta. Yana kunshi sassa biyu: da parenchyma (mesophyll da jijiyoyin bugun gini daure mikawa a friable nama) da epidermis (m Layer).

Akwai da dama iri sepals, dangane da wurin da ganye a cikin kofin.

1. Lokacin da ganye suna shirya dabam daga juna. Alal misali, ceri ko kabeji.

2. Sepals ko gaba daya Fused, ko partially. Alal misali, Peas ko dankali. Bisa ga tsarin, su ne dan kadan daban-daban, da ciwon kofin Fused zanen gado a cikin nau'i na mazurari, tube ko kararrawa. Alal misali, Kalanchoe.

3. Wasu sepals suna located in biyu raba da'irori. Alal misali, Mallow ko raspberries.

4. Bilabiate kofin ne zuwa kashi biyu unequal sassa, kamar Sage.