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प्रश्न
Factors responsible for the rapid spread of bread mould on slices of bread are
- large number of spores
- availability of moisture and nutrients in bread
- presence of tubular branched hyphae
- formation of round shaped sporangia
पर्याय
(i) and (iii)
(ii) and (iv)
(i) and (ii)
(iii) and (iv)
उत्तर
(i) and (ii)
Explanation -
Bread mould is a saprophyte which lives on dead and decaying plant material and obtain its nutrition. It reproduces asexually through production of thick-walled spores. These spores germinate to form hyphae on coming in contact with moist surface. So, the factors responsible for the rapid spread of bread mould on slices of bread are large number of spores and availability of moisture and nutrients in bread.
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संबंधित प्रश्न
Production of new individuals from the vegetative part of parent is called ______.
Describe the different methods of asexual reproduction. Give examples.
Factors responsible for the rapid spread of bread mold on slices of bread are ______
(i) a large number of spores
(ii) availability of moisture and nutrients in bread
(iii) presence of tubular branched hyphae
(iv) formation of round shaped sporangia
what are the kinds of reproduction?
Which of the following is the correct sequence of events of sexual reproduction in a flower?
Characters transmitted from parents to offspring are present in
The correct sequence of reproductive stages seen in flowering plants is
Offspring formed as a result of sexual reproduction exhibit more variations because
One morning as Paheli strolled in her garden she noticed many small plants which were not there a week ago. She wondered where they had come from as nobody had planted them there. Explain the reason for the growth of these plants.
| The most obvious outcome of the reproduction process is the generation of individuals of similar design, but in sexual reproduction they may not be exactly alike. The resemblances as well as differences are marked. The rules of heredity determine the process by which traits and characteristics are reliably inherited. Many experiments have been done to study the rules of inheritance. |
- Why an offspring of human being is not a true copy of his parents in sexual reproduction?
- While performing experiments on inheritance in plants, what is the difference between F1 and F2 generation?
- (A) Why do we say that variations are useful for the survival of a species over time?
OR
(B) Study Mendel's cross between two plants with a pair of contrasting characters.
RRYY × rryy Round Yellow Wrinkled Green He observed 4 types of combinations in F2 generation. Which of these were new combinations? Why do new features which are not present in the parents, appear in F2 generation?
