different organisms reproduce by different methods suitable to their body designs explain using example of different organisms which reproduce by different methods of a sexual reproduction
Answers
Answered by
1
Different organisms reproduce based on their body design. As we mainly see in Plants and in animals asexual reproduction is the basuc method of reproduction.
In plants: Plants are of two types such as bisexual ( Hibiscus and mustard) and asexual ( Papaya and watermelon) In bisexual flowers both male and female reproductive organs are present. The female reproductive part in plants consists of the stigma, the style and the ovary. The ovary contains the ovule which contains the female gametes. The male reproductive part in plant contains the Anther, Filament. The male gametes or the pollen grains lands on the srigma. For the male germ cell to fuse with the egg cell, a tube grows out of the pollen grain, and travels to the style to reach the ovary.
After fertilization, the zygote divides itself , to form an embryo within the ovule. The ovule develops a tough coat and is gradually converted into a seed. The ovary grows rapidly and ripens to form a fruit.
This seed contains the future plant. Agents of transfer of pollen grain from one flower to another ( in a
cross pollination and self pollination ) are wind, water or animals.
2)In animals: In animals the male reproductive part consists of the scrotum, the vas deferens, the prostate gland, the seminal vesicle, the ureter, the urethra and the penis. The Female reproductive system consists of the ovary, the oviduct , the uterus, the cervix, and the vagina. During mating the sperm from the male fuses with the egg cell present in the ovary to form the zygote. The zygote gets implanted on the uterine wall. The embryo gets nutrition from the mother's blood with the help of a special tissue called Placenta. This disc is embedded on the uterine wall. It contains villi on the embryo's aside of the tissue. On the mother side are blood spaces which surround the villi. Thus increasing the surface area. This provides enough space for glucose and oxygen to pass from the mother to the embryo. After nine months the embryo fully develops and is born as a result of rhythmic contractions of the muscles in the uterus.
In plants: Plants are of two types such as bisexual ( Hibiscus and mustard) and asexual ( Papaya and watermelon) In bisexual flowers both male and female reproductive organs are present. The female reproductive part in plants consists of the stigma, the style and the ovary. The ovary contains the ovule which contains the female gametes. The male reproductive part in plant contains the Anther, Filament. The male gametes or the pollen grains lands on the srigma. For the male germ cell to fuse with the egg cell, a tube grows out of the pollen grain, and travels to the style to reach the ovary.
After fertilization, the zygote divides itself , to form an embryo within the ovule. The ovule develops a tough coat and is gradually converted into a seed. The ovary grows rapidly and ripens to form a fruit.
This seed contains the future plant. Agents of transfer of pollen grain from one flower to another ( in a
cross pollination and self pollination ) are wind, water or animals.
2)In animals: In animals the male reproductive part consists of the scrotum, the vas deferens, the prostate gland, the seminal vesicle, the ureter, the urethra and the penis. The Female reproductive system consists of the ovary, the oviduct , the uterus, the cervix, and the vagina. During mating the sperm from the male fuses with the egg cell present in the ovary to form the zygote. The zygote gets implanted on the uterine wall. The embryo gets nutrition from the mother's blood with the help of a special tissue called Placenta. This disc is embedded on the uterine wall. It contains villi on the embryo's aside of the tissue. On the mother side are blood spaces which surround the villi. Thus increasing the surface area. This provides enough space for glucose and oxygen to pass from the mother to the embryo. After nine months the embryo fully develops and is born as a result of rhythmic contractions of the muscles in the uterus.
Similar questions