After a rainy season, while Mani was strolling in her garden, noticed many small plants of various fruits and flowers which were not present in her garden. She wondered where they had come from as nobody had planted them there. As Mani loves gardening she started cleaning the area around the small plants and taking care of them.
(a) How plants propagate through the sexual mode of reproduction?
(b) What is an embryo?
(c) What do you think the plants grown in Mani’s garden had come from?
(d) How do seeds of some fruits like tomato, guava or brinjal propagate?
Answers
Answer:
a) Sexual reproduction in flowering plants involves the production of male and female gametes, the transfer of the male gametes to the female ovules in a process called pollination. After pollination occurs, fertilization happens and the ovules grow into seeds within a fruit.
b) An embryo is the early stage of development of a multicellular organism. In general, in organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization and continues through the formation of body structures, such as tissues and organs. Each embryo starts development as a zygote, a single cell resulting from the fusion of gametes
c) Some one has thrown seed and rain occurs then seed develop in into plant
Answer:
(a) Through seeds
(b) Embryo is a future plant, found deep inside the seed. It is formed from the development of zygote.
(c) Plants grown in Mani’s garden may have come from the seeds dispersed through various agents like animals, wind, water, etc. Which on getting favourable conditions have germinated into plants.
(d) Seeds of these fruits are generally propagated through animal faeces when they consume it.