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प्रश्न
Yeast reproduces by _________.
(a) spore formation
(b) multiple fission
(c) fragmentation
(d) budding
उत्तर
(d)
Yeast reproduces by budding.
APPEARS IN
संबंधित प्रश्न
Vegetative propagation takes place with the help of leaves in _________ plant.
…………. is a mode of asexual reproduction.
(a) Cloning
(b) Budding
(c) Pollination
(d) Germination
Draw labelled diagrams to illustrate budding in Hydra.
When you study a slide showing different stages of budding in yeast, you observe the following stages:-
I. The bud may get separated from the parent body and develop into a new individual.
II. The body of the bud develops and gives rise to another baby bud.
III. A bud comes out in any direction from the body of the parent cell.
IV. Thus they may form a colony.
The proper sequence of the above stages is
(A) II, I, III, IV
(B) II, III, I, IV
(C) III, II, l, IV
(D) III, I, II, IV
Name the following : 'Blobs' that develop at the tips of the non-reproductive threads in Rhizopus.
How will an organism be benefited if it reproduces through spores?
Can you think of reasons why more complex organisms cannot give rise to new individuals through regeneration?
How are the modes for reproduction different in unicellular and multicellular organisms?
A tadpole develops into an adult frog by the process of ______.
Define asexual reproduction.
Name the method by which Spirogyra reproduces under favourable conditions. Is this method sexual or asexual?
Draw in sequence (showing the four stages), the process of binary fission in Amoeba.
A student in viewing under a microscope a permanent slide showing various stages of asexual reproduction by budding in yeast. Draw diagrams of what he observes (in proper sequence)
Most of the plants reproduce by sexual method. Name two plants which can reproduce asexually.
Name one commonly used vegetable which is propagated by using tubers.
Name one unicellular organism which reproduces by the same asexual process as Hydra.
What is yeast? Describe the process of reproduction in yeast with the help of labelled diagrams.
An alga which reproduces by the asexual reproduction method called fragmentation is :
(a) Rhizopus
(b) Salmonella
(c) Plasmodium
(d) Spirogyra
APlanaria worm is cut horizontally in the middle into two halves P and Q such that the part P contains the whole head of the worm. Another Planaria worm is cut vertically into two halves R and s in such a way that both the cut pieces R and S contain half head each. Which of the cut pieces of the twoPlanaria worms could regenerate to form the complete respective worms?
(a) only P
(b) only R and S
(c) P, R and S
(d) P, Q, R and S
When a broken piece of the stem of a plant X is planted in the soil, a new plant grows from it in a week's time. The leaves of plant X also have many small entities Y in their margins which can fall to the ground alone or alongwith leaves and grow into new plants.
(a) Name a plant which X could be.
(b) What are the entities Y present on the leaves of X known as?
(c) Name a plant other than X which can be reproduced from its leaves.
(d) Name a common plant grown in many homes which can be propagated from its broken stems like plant X.
(e) Name a kind of dormant organs present in dry stems of old grass plants lying in the fields which get activated and produce green grass plants after the rains.
Fill in the following blank with suitable word :
Fusion of gametes gives rise to a single cell called ............
Multiple choice question. Tick (✓) the correct choice:
Reproduction or propagation by stem is common in
- begonia
- potato
- sweet potato
- Bryophyllum
Fill in the blank:
Yeast cells reproduce by ________.
Describe regeneration in Planaria with the help of a suitable diagram.
Write a short note on regeneration.
List two observations on the basis of which it may be concluded that the given slide shows binary fission in Amoeba.
Give the name of the plant that reproduces vegetatively by: Underground stem
What are the objectives of plant hybridisation?
Asexual reproduction in yeast is ______.
Yeast reproduces asexually by means of multiple fission.
The asexual reproduction in bacteria occurs by ______.
Many unicellular organisms reproduce by the process of ______
In Spirogyra, asexual reproduction takes place by
Vegetative propagation refers to formation of new plants from
Length of pollen tube depends on the distance between
Which of the following statements are true for flowers?
- Flowers are always bisexual
- They are the sexual reproductive organs
- They are produced in all groups of plants
- After fertilisation they give rise to fruits
Which of the following statements is/are true for sexual reproduction in plants?
(i) Plants are obtained from seeds.
(ii) Two plants are always essential.
(iii) Fertilisation can occur only after pollination.
(iv) Only insects are agents of pollination.
Choose from the options given below.
When one of the following is correctly matched?
Suppose there is one member of a particular kind of organism in a culture dish, which doubles itself in one hour through asexual reproduction. Work out the number of members of that kind of organism which will be present in the culture dish after ten hours. Such a colony of individuals arising from one parent is called a “clone”.
