The action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote. The gametes that participate in fertilisation of plants are the sperm (male), and the egg cell, and in flowering plants a second fertilisation event involves another sperm cell and the central cell which is a second female gamete. In flowering plants there are two sperm from each pollen grain.
Answer:
In the adult organism, mitosis plays a role in cell replacement, wound healing and tumour formation. Mitosis, although a continuous process, is conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase and telophase.
Cell cycle has different stages called G1, S, G2, and M. G1 is the stage where the cell is preparing to divide. To do this, it then moves into the S phase where the cell copies all the DNA.
Explanation:
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Answer:
All colour except which is already present in the body.
Explanation:
The plant leaf has green colour so the plant absorb all the colour except green. The presence of green colour causes reflection of green colour so that's why we can see the green colour of the leaves. Every material or substance have a specific colour which can be seen when they absorb all light except the colour which is already present in it so we can say that that colour is not absorbed by the body which is already present in it.
Rays of light that pass through the lens are brought closer together that’s because this lens is a converging lens.
Answer:D) Samples A & C indicate cancer due to the large proportion of cells in some stage of mitosis compared to the cells in interphase.
Sample: Number of Cells in Interphase Number of Cells in Prophase Number of Cells in Metaphase Number of Cells in Anaphase Number of Cells in Telophase
Sample A 6 15 4 7 8
Sample B 25 4 2 3 1
Sample C 4 9 5 3 6