Advertisements
Advertisements
प्रश्न
With the help of suitable diagram, describe Binary fission in plants.
उत्तर
This is one of the asexual mean of reproduction. In lower plants like bacteria reproduction takes place by this process. In this process the nucleus of the cell divides into two. Then the cell wall splits across the middle of the cell. Thus each part has a nucleus. Thus each part is an independent bacterium.
Later on these two parts of the cell get separated from each other and form two independent individuals called daughter cells and lead independent life
APPEARS IN
संबंधित प्रश्न
Which artificial propagation method is used for the production of jasmine plants?
Describe the process of reproduction in Hydra with the help of labelled diagrams. What is the name of this process of reproduction?
Name the method by which bread mould (Rhizopus fungus) reproduces. Is this method sexual or asexual?
Asexual reproduction through budding takes place in :
(i) Amoeba and Yeast
(ii) Yeast and Hydra
(iii) Hydra and Plasmodium
(iv) Corals and Sponges
(a) (i) and (ii)
(b) only (ii)
(c) (i) and (iii)
(d) (ii) and (iv)
The cut part of plant stem (having roots and fixed to ground) which is used in the process of grafting is known as :
(a) stock
(b) scion
(c) cutting
(d) bud
When a moist slice of bread was kept aside for a few days then some organism grew on it to form a white cottony mass which later turned black. When this slice of bread was observed through a magnifying glass, then fine thread-like projections and thin stems having bulb-like structures at the top were seen.
(a) What is the common name and scientific name of the organism which grew on the moist slice of bread?
(b) How did this organism grow on the moist slice of bread automatically?
(c) What are the fine, thread-like projections on the surface of slice of bread known as?
(d) What name is given to the knob-like structures and what do they contain?
(e) What is the name of this method of reproduction?
(f) Name one unicellular organism which reproduces by this method.
(g) Name tow non-flowering plants which reproduce by this method.
Find the odd-one out, giving reason.
Cutting, grafting, layering, binary fission.
Define the following:
Vegetative reproduction
Name four plants which can be propagated by root-cutting
Seeds are the product of asexual reproduction.
