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megaspore
英音[ ˈmeɡəˌspɔː ] 美音[ ˈmeɡəˌspɔːr ]
大孢子
常用释义
词性释义
n.
大孢子;(种子植物的)胚囊
例句
全部
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。
1·A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.
孢原细胞处于珠心表皮之下,直接起大孢子母细胞的功能。
同义词
n.
[植]大孢子;(种子植物的)胚囊
macrospore
gynospore