Reproduction

Step 1: Pollen grains must move from anther to stigma. Step 2: Wind, water, and insects can help carry them. Step 3: Therefore, they are considered agents of pollination.

Step 1: In sexual reproduction, gametes from two parents fuse. Step 2: This forms a new combination of genetic material. Step 3: Therefore, offspring may show more variation.

Step 1: Asexual reproduction involves only one parent. Step 2: The offspring receives genetic material from that parent. Step 3: So the offspring is very similar to the parent.

Step 1: Stigma is the upper part of the pistil. Step 2: Pollen grains reach it during pollination. Step 3: Therefore, its main function is to receive pollen grains.

Step 1: The pistil has stigma, style, and ovary. Step 2: The style connects the stigma to the ovary. Step 3: The pollen tube can grow downward through this path.

Step 1: A pollen grain can germinate on the stigma. Step 2: This forms a pollen tube. Step 3: The pollen tube carries the male gamete to the egg.

Step 1: Fertilization forms a zygote. Step 2: The zygote divides to form an embryo. Step 3: Pregnancy progresses when the embryo implants in the uterine wall.

Step 1: Eggs are produced in ovaries. Step 2: A mature egg may be released from the ovary. Step 3: This event is called ovulation.

Step 1: Sperm is the male gamete. Step 2: Its tail helps it move. Step 3: This movement helps it reach the egg.

Step 1: Reproductive health is not only about producing children. Step 2: It also includes hygiene, safety, and correct knowledge. Step 3: A healthy reproductive system is important for both person and society.

Step 1: The ovary is present in the pistil of a flower. Step 2: After fertilization, the ovary grows and becomes a fruit. Step 3: Remember that the ovule becomes a seed and the ovary becomes a fruit.

Step 1: An individual can survive through nutrition and respiration. Step 2: But new offspring are needed to maintain the species after individuals die. Step 3: Therefore reproduction is essential for continuity of species.

Step 1: Only one parent takes part in asexual reproduction. Step 2: The offspring receives genetic information from that parent. Step 3: Therefore offspring are usually similar to the parent.

Step 1: Sexual reproduction forms male and female gametes. Step 2: These gametes bring genetic information from two sources. Step 3: Their fusion creates new combinations in offspring.

Step 1: Genetic information is copied before reproduction. Step 2: Small copying errors can create differences. Step 3: Such variation may be useful for evolution over time.

Step 1: In binary fission one cell divides into two. Step 2: In multiple fission one cell can produce many daughter cells. Step 3: Remember the difference by the number of offspring formed.

Step 1: Amoeba is unicellular and irregular in shape. Step 2: It does not have a fixed long or broad plane. Step 3: Therefore its binary fission is not considered fixed in one plane.

Step 1: Leishmania has a whip like structure at a definite position. Step 2: This gives the cell a definite direction. Step 3: Therefore division is seen in a definite plane.

Step 1: In Rhizopus spores form inside sac like structures. Step 2: Spores can remain light and protected. Step 3: Under favourable conditions they germinate and form new organisms.

Step 1: A small bud forms on Hydra's body. Step 2: This bud can grow into a new Hydra. Step 3: Therefore it is asexual reproduction from one parent.