The alternation of generations
in the life cycle of a plant includes the diploid and haploid multicellular
stages. diploid and haploid are copies of the chromosomes. The spores in the
plant is unicellular and when they start dividing through mitosis, it produces
identical cells. These identical cells are all haploid. Haploid stages contain
one set of chromosome from either of the parent. These identical cells create a
multicellular system called the gametophytes. A gametophyte is the haploid
multicellular stage in the life cycle of a plant. The gametophyte makes the
gametes. These gametes are responsible for sexual fertilization. It takes place
when a sperm (male gametes) from the male fuses into the egg cell (female
gametes) of the female. The formation of both
male and female gametes creates a diploid zygote. Diploid stages
contain one set of chromosome from each parent. This is where the sporophyte
comes in. A sporophyte is the diploid multicellular stage in the life cycle of
the plant. It now contains the two sets of chromosomes from each parent.
The type of
cell division that produces gametes with half the normal chromosome number is
the meiosis. Meiosis is the type of cell division used in sexual reproduction.
It will occur in the testes and ovaries.
<span> </span>
Answer:
Independent: type of fertilizer
dependent: plant growth
control: soil, seed, water, type of pot, environment/amount of sunlight, air quality, etc.
Explanation: Think about it like this: the dependent variable DEPENDS on the independent variable. The fertilizer will control how tall the plant grows (if there is a relationship between them). Then the control variable is ANY VARIABLE that remains the same in all trials. You can only manipulate one variable (have one independent variable) or else the experiment is not valid.
Cell wall.......... Hope it helps, Have a nice day :)
Answer:Mutualism: both partners benefit
Explanation:
Explanation:
Thực vật hạt trần là một nhóm thực vật không có hoa, chứa các hạt có cấu trúc tương tự như hình nón, không được bao bọc trong quả. Các hạt không được hình thành trong các noãn hay bên trong quả như ở thực vật hạt kín, mà được tìm thấy trên các vảy bắc của lá nón hoặc các cấu trúc tương tự.
