What is reproduce mean?
a : to produce (new individuals of the same kind) by a sexual or asexual process. b : to cause to exist again or anew reproduce water from steam.
What do you mean by juvenile phase?
(1) Juvenile phase – It is the period of growth after birth in an individual organism, and before it meets reproductive maturity. (2)Reproductive phase – It is the time when a human organism sexually reproduces. (3) Senescent phase – It is the time when an organism grows older and loses the reproductive capacity.
What is juvenile or vegetative phase?
The juvenile phase: All organism has to attain a certain stage of growth and maturity before the can reproduce. This is called juvenile phase. The vegetative phase: the period of growth or the period before reproductive phase in plants is termed as vegetative phase. both the phases is followed by Reproductive phase.
What marks the end of juvenile phase in plants?
Answer. The end of the Juvenile phase or Vegetative phase in flowering plants is marked by the beginning of Reproductive phase and reproductive phase can be seen easily in the plants when they come to flower.
What makes the end of reproductive phase?
In males, reproductive phase lasts until death but in females, it ends by the age of 50 years. Menstrual cycle/ menstruation mark the commencement of puberty in girls. In a girl, reproductive phase emerges from the age of 10 to 15 when she attains the puberty. When puberty arrives eggs in ovaries starts to mature.
Why reproductive phase in a man lasts for the whole life?
No, reproductive phase in a man doesn’t last for the whole life. Because, – The reproduction work in a male human body is totally dependent on the sex hormones secreted in the body. – And with increasing age,the hormone producing glands loses it’s normal capabilities to produce hormones.
Which is the end stage of reproductive phase in the life of a female?
In the event of no fertilization taking place, the lining of the uterus sheds leading to bleeding hence, menstruation. The first menstrual flow is known as menarche. The menstrual cycle ceases by the age of 50 years, stops forever and is referred to as menopause.
What is the beginning of the reproductive phase in human life called?