問題一覧
1
The ___ system is important in anchoring and supporting the plant. It is responsible for absorbing water and minerals from the soil. The presence of its __ hairs makes this absorption efficient.
root
2
The ____ will transport the sperm during pollination.
tube nucleus
3
The other sperm nucleus fertilizes the polar nuclei to produce ___.
endosperm
4
The ___ are composed of elongated tubelike structures placed end-to-end. These tubes transport sugars and nutrients.
sieve tubes
5
The ___ serve as the primary embryonic leaves in the seedlings.
cotyledons
6
occur in different shapes and colors. They also have different textures and purposes which are very important in certain plants.
Leaves
7
Only the _____ will have descendant in seeds.
polar nuclei and egg nucleus
8
The ___ allows the continuous downward growth of roots.
root apical meristem
9
Eventually, the ___ from plumule gives rise to mature leaves.
epicotyl
10
The primary sex cell that is fertilized is the ____.
egg nucleus or egg cell
11
Each ovule or embryo sac in the ovary of the flower consist of ___ nuclei.
eight
12
____ land on the stigma of the pistil. The pollen tube extends itself.
Pollen grains
13
In the ___, one of the sperm nuclei fertilizes the egg nucleus to form embryo.
embryo sac
14
The __ system of a plant anchors the plant and supports the leaves in exposing it to sunlight to make photosynthesis possible. The ___ system includes the stem, branches, and leaves.
shoot
15
Xylem
water
16
The fate of different floral structure upon the maturity into a __
fruit
17
May either involve single (self-pollination) or two parents (cross-pollination) Requires the fusion of a sperm cell and egg cell during fertilization Enhances genetic variation because the parents and offspring are not genetically identical
Sexual Reproduction
18
Liverworts and hornworts are also ____.
nonvascular plants
19
Each _____ in the ovary of the flower consist of eight nuclei.
ovule or embryo sac
20
__ are plants that store the product of photosynthesis in their roots.
Carrots and potatoes
21
performs vegetative propagation through the buds that emerge from stolons or runners.
Strawberries (Fragaria sp.)
22
The ___ allows further growth of stems and roots by increasing their thickness.
cambium
23
contain the male gametophytes in angiosperms. Each ____ consists of two sperm nuclei from the generative nucleus.
pollen grains
24
The ____elements of xylem are composed of modified sclerenchyma cells.
tracheids and vessel
25
The ___ allows further growth of stems and roots by increasing their thickness.
cambium
26
Requires a single or lone parent Does not involve the fusion of gametes Offspring are genetically identical to the parent organism
Asexual Reproduction
27
The ___ emerges from the seed, which become the stem.
hypocotyl
28
The ___ , which contains vascular tissues for transporting water and other substances, attaches the stem to the rest of the leaf.
petiole
29
in some species of dandelions allows the production of embryos from unfertilized eggs in ovules. is a genetic feature in dandelions, which therefore, allows them to produce viable seeds without undergoing pollination.
Apomixis
30
Plants such as ___ that have a stem situated at the soil surface or underground (rhizomes). These stems contain nodes from which roots and shoots originate.
ginger and bamboo
31
The ___ moves down the style towards alongside two sperm nuclei.
pollen tube
32
allows plant parts to produce buds that can develop into new individuals
Vegetative propagation
33
The ___ emerges from the seed, which becomes the root of the plant.
radicle
34
live in a damp and shady places in order to reproduce and to get enough water because they lack vascular tissues.
Mosses
35
During ___, water is imbibed, which ruptures the seed coat.
germination
36
___ produces a diploid embryo and a triploid endosperm.
Double fertilization
37
Phloem
nutrients
38
The ____ allows the continuous upward growth of the plant.
shoot apical meristem
39
Scientific Name of Strawberry
Fragaria sp.