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1) placenta is a disc like structure that forms between uterine wall and embryo.
It forms villi towards embryo which provides large surface area for exchange of materials like glucose, O2 and other nutrients between mother's blood and embryo.
The waste products generated by embryo gets transferred to mother's blood with the help of placenta.
OR
2)a) example of bisexual flower is Rose.
Unisexual flower - coconut flower.
b) after fertilisation, the zygote divides many times and forms embryo within ovule. This ovule develops a tough coat and converts to seed. The ovary rapidly grows and ripens as fruit.
C) the gamate cells contain half no. of chromosomes than present in normal cell that is 23 chromosomes.. When the gametes from two individuals fuse, they restore the normal number of chromosomes in the progeny, ensuring stability of the DNA of the species....
Hope it helps you dear ☺️
It forms villi towards embryo which provides large surface area for exchange of materials like glucose, O2 and other nutrients between mother's blood and embryo.
The waste products generated by embryo gets transferred to mother's blood with the help of placenta.
OR
2)a) example of bisexual flower is Rose.
Unisexual flower - coconut flower.
b) after fertilisation, the zygote divides many times and forms embryo within ovule. This ovule develops a tough coat and converts to seed. The ovary rapidly grows and ripens as fruit.
C) the gamate cells contain half no. of chromosomes than present in normal cell that is 23 chromosomes.. When the gametes from two individuals fuse, they restore the normal number of chromosomes in the progeny, ensuring stability of the DNA of the species....
Hope it helps you dear ☺️
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Placenta is the special tissue that gives nutrition to the embryo through the mother's blood. Placenta is disc like structure embedded in uterine wall .Plecenta provides the glucose, water, oxygen etc to the embryo from mothers blood
OR
(I)
(II) Fertilisation is process of fusion of male germ cell and female germ cell to form zygote. After fertilisation the zygote breaks into embryo and after getting growth into seed and the ovary develops into fruit.
I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST
OR
(I)
(II) Fertilisation is process of fusion of male germ cell and female germ cell to form zygote. After fertilisation the zygote breaks into embryo and after getting growth into seed and the ovary develops into fruit.
I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST
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