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प्रश्न
Choose the correct order of the stages of binary fission in Leishmania.
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| (I) | (II) | (III) | (IV) | (V) |
विकल्प
I, II, III, IV, V
I, III, II, V, IV
I, III, V, II, IV
I, II, III, V, IV
उत्तर
I, III, II, V, IV
Explanation:
In Leishmania binary fission occurs in a definite orientation:
- A constriction in the cell membrane first appears after nuclear division.
- Inwardly transversely from the centre of the dividing cell, the membrane expands.
- The cytoplasm divides into two equal pieces, each with a single nucleus
- The daughter cells can split off and create two new creatures.
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| (I) | (III) | (II) | (V) | (IV) |
संबंधित प्रश्न
Production of new individuals from the vegetative part of parent is called ______.
Describe the different methods of asexual reproduction. Give examples.
State the main difference between asexual and sexual reproduction.
What would be the chromosome number of resulting cells when a microspore mother cell with 40 chromosomes undergoes meiosis?
The number of chromosomes in parents and offsprings of a particular species undergoing sexual reproduction remain constant due to:
what are the kinds of reproduction?
Characters transmitted from parents to offspring are present in
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
Sexual reproduction in angiosperms leads to variation, which is for ______.
| 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?
