Reproduction in Plants and animals Solved Questions for class VII
The process of producing new individuals of same
kind of the same species is called reproduction.
Why reproduction is a essential life process?
Reproduction is essential for continuation of the
species from generation to generation.
What are the
different modes of unisexual reproduction?
The modes of reproduction evolve only one parent is called unisexual reproduction.
The modes of reproduction evolve only one parent is called unisexual reproduction.
(a) Fission: The mode of reproduction in which unicellular organism split into two equal halves and produce new ones is called binary fission. For example amoeba and bacteria
(b) Fragmentation: The mode of reproduction in which body of plant breaks up into smaller fragments and each fragment grows into a new individual is known as Fragmentation e.g. Spirogyra , algae
(c) Budding: The mode of reproduction in which small buds when develop get separated and mature into new organisms is called Budding. E.g. Yeast, Hydra, Bryophyllum
(d) Spore formation: The mode of reproduction takes place by means of spores is called spore formation.eg. algae and fungi
The spores are covered
by thick walls that protect them until they come into contact with another moist surface and can
begin to grow.
Mention some of the
spores of asexual reproduction.
Aplanospores, Zoospores, Akinetes and Conidia
What do you mean by vegetative propagation?
Vegetative propagation is the ability of plants to reproduce by using vegetative parts like root
,stem and leaves is called vegetative propagation.
Why there are so many methods of
reproduction?
It is due to complexity of the body design of organisms.
What is sexual
reproduction?
Sexual reproduction is the process in which two
components ( male and female) are involved to produce offspring of their own
kind.
Name the reproductive
organ of a flowering plant
The flower is a reproductive organ of a flowering
plant
Name the male and
female part of flower.
Androecium is the male part of a flower,and
Gynoecium is the female part.
Androecium
is a group of stamens. Each Stamen consists of a
stalk called the filament and a
small bag like structure called the anther
at the tip. The pollen grains
are contained in the anther within the pollen sacs
Gynoceium is the female part of the flower and consists of the carpels or ovary. Gynoceium has three parts 1) Stigma 2) Style
and 3) Ovary. The ovary contains the
ovules and each ovule carries within it an embryo sac, within which lies the
egg cell or the female gamete.
For further study
visit post related to Reproduction in
plants
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