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प्रश्न
When you keep food items like bread and fruits outside for a long time, especially during the rainy season, you will observe a cottony growth on them.
How does the growth take place?
उत्तर
The growth of the fungus takes place by the germination of fungal spores.
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संबंधित प्रश्न
Name the method by which Spirogyra reproduces under favourable conditions. Is this method sexual or asexual?
Name three common methods which are used for the artificial propagation of plants.
How does an Amoeba reproduce? Describe the process of reproduction in Amoeba with the help of labelled diagrams of different stages in its reproduction process.
Name two marine organisms which also reproduce by the same method as yeast but form colonies.
Describe the cuttings method for the artificial propagation of plants. Illustrate your answer with the help of labelled diagrams.
There are four tiny organisms A, B, C and D. The organism A is a parasitic protozoan which causes a disease known as kala-azar. The organism B is a microscopic single-celled animal which causes malaria disease in human beings. The organism C is a unicellular animal which can change its body shape according to need, it has no fixed shape. The organism D is also a unicellular animal which is slipper-shaped having a large number of tiny hair all around its body.
(a) Name the organisms A, B, C and D
(b) Name one characteristic body feature of organism A.
(c) Name the insect which carries organism B and transmits it from one person to another.
(d) What name is given to the asexual method of reproduction of (i) organism A, and (ii) organism B?
(e) Where do organisms C and D live?
Select the correct statements for the process of budding in yeast:
I. A bud arises from a particular region on a parent body.
II. A parent cell divides into two daughter cells, here the parental identity is lost.
III. Before detaching from the parent body a bud may form another bud.
IV. A bud when detaches from the parent body grows into a new individual.
(A) I, II and III
(B) II, III and IV
(C) III, IV and I
(D) IV, I and II
Draw a labelled diagram in proper sequence to show budding in hydra.
Name four plants which can be propagated by stem-cutting.
