Sperm ( pl
1 Plants have two distinct multicellular stages in their life cycles, a phenomenon called alternation of generations (in contrast to the haplontic anddiplontic life
Like those of familiar animals, the gametes of all plants are of two types, a larger, immobile egg and a smaller sperm that must in some way bemobile in order to
The cells of a sporophyte body have a full complement of chromosomes (i
Plant Reproduction: Shaping the genome of plants Fertilization of an egg cell by more than one sperm cell can produce viable progeny in a flowering plant
Fertilization in plants occurs when haploid gametes meet to create a diploid zygote, which develops into an embryo
The gametophytes of plants may be bisexual (hermaphrodites), producing both egg and sperm, or unisexual, i
It comes from the male part of the flower
These curious plants produce Some plants develop egg cells called ovules and sperm cells called pollen
Plants are amazing natural wonders
The sperm cells are multiflagellate and are among the largest (about 300 μm, or 0
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sperm and eggs _____ are seedless vascular plants
The sperm-producing organ, the antheridium, consists of a jacket of sterile cells with sperm-producing cells inside
10 Understanding Hermaphroditism You can probably imagine a few benefits of hermaphroditism (having the ability to produce both eggs and sperm)
Adult lace bugs have a size of 0
The honeydew accumulates on the plant’s lower foliage, furniture, carpeting, or other objects beneath the infested plant
Each pollen tube may contain 2–22 sperm cells, depending on the genus
William (Ned) Friedman In the seed plants, the gametophytes mature as parasites on the sporophytes
Which of these reproductive methods is the only one available to mosses and ferns? Spores
Even so, scientists are able to observe mechanisms that help their offspring Cankers
They have cells with chloroplasts, cell walls containing cellulose, and store starch, as plants do
If a stem is totally exposed to strong direct light, it will often turn red, pink, or purple over time
These eggs can be small and pale white or yellow and can cause devastating The pollen must make its way from the stamen to the stigma
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) Blend the rinds and water in a food processor and pour the mixture around your plants
Chapter 46
What plant groups have swimming sperm and require water for fertilization? Click the card to flip 👆
NARRATOR: Some starfishes reproduce by releasing their eggs directly into seawater
Spores and sperm are distinct structures with different life cycle roles