megaspore发音

意思翻译

n.大孢子；（种子植物的）胚囊

相似词语短语

megaera solo───梅盖拉独奏

pureform omegas───纯欧米茄，

mega calcium───巨钙

acromegaly cat───肢端肥大症猫

acromegaly syndrome───肢端肥大症

caius the mega monarch───凯乌斯是超级君主

acromegaly score───肢端肥大症评分

aganglionic megacolon───[医]无神经节性巨结肠：同congenital megacolon

patmos omega───欧米茄patemos

omega seamaster───欧米茄塞马斯特

双语使用场景

synchronous development of megaspore and pollen chamber.───孢子发育和贮粉室发生的同步性。

Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.───孢子四分体为线形，合点端功能大孢子发育成为蓼型胚囊。

Arrangement of megaspore is linear shaped, the megaspore of chalazal end is functional megaspore.───孢子排列为直线型，合点端大孢子为功能大孢子。

In theterosporous species, a distinction is usually made between megaspore mother cells and microspore mother cells.───在异型孢子体种类中，可区分为大孢子母细胞和小孢子母细胞。

Of the four products of a megaspore mother cell, three usually abort.───在大孢子母细胞分裂产生的四个孢子中，三个会解体消失。

The megaspore mother cell meiosis to form a linear megaspore tetrad.───大孢子母细胞减数分裂产生直线形大孢子四分体。

In the gymnosperms the megaspore gives rise to a cell that is termed the embryo sac because of its similarity to the angiosperm structure.───在裸子植物中，大孢子也产生一个细胞，因为它类似于被子植物的胚囊细胞，故也可以称之为胚囊。

Genesis of megaspore and development of embryo sac in Carica papaya L .───番木瓜的大孢子发生与胚囊发育。

英语使用场景

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So it defined as crassinucellate. The megaspore mother cell divides transversally to form a linear megaspore tetrad. The megaspore at the chalazal end develops into the embryo sac mother cell.

Development of megaspore and formation of embryo sac:The ovule has a layer of parietal cells at the sporogenous stage.

The functional megaspore in the linear tetrad is the one endsac is the polygonum type.

In dandelion ( Taraxacum ), for example, the chromosomes of the megaspore mother cell remain in one cell after the first meiotic division, forming a restitution nucleus.

Function megaspore is in the chalaza and the monosporic embryo sac is chenopodiad type.

Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.

The megaspore archesporium splits circumference, it circumferential edge cell and a sporogenous cell.

A single archesporium differentiates immediately below the nucellar epidermis, it functions directly as the megaspore mother cell.