Advertisements
Advertisements
प्रश्न
A feature of reproduction that is common to Amoeba, Spirogyra and Yeast is that
पर्याय
they reproduce asexually
they are all unicellular
they reproduce only sexually
they are all multi-cellular
उत्तर
they reproduce asexually
Explanation -
Amoeba reproduces through binary fission, Spirogyra reproduces through fragmentation and yeast reproduces through budding. Binary fission, fragmentation and budding are the methods of asexual reproduction.
APPEARS IN
संबंधित प्रश्न
What would be the chromosome number of resulting cells when a microspore mother cell with 40 chromosomes undergoes meiosis?
In the following Question, the Assertion, and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following
Assertion: In human beings, the female. play a major role in determining the sex of the offspring.
Reason: Women have two X chromosomes.
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
Lila observed that a pond with clear water was covered up with a green alga within a week. By which method of reproduction did the algae spread so rapidly?
Differentiate between binary fission in Amoeba and binary fission in Leishmania.
Choose the correct order of the stages of binary fission in Leishmania.
![]() |
![]() |
![]() |
![]() |
![]() |
(I) | (II) | (III) | (IV) | (V) |
Name and explain the two modes of asexual reproduction observed in hydra.
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?
Make your own cactus garden by collecting pieces cut from different kinds of cacti. Grow the variety in one single flat container or in separate pots.