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प्रश्न
Draw a neat and labelled diagram.
Spore formation
उत्तर
APPEARS IN
संबंधित प्रश्न
Vegetative propagation takes place with the help of leaves in _________ plant.
For binary fission, Amoeba required .................... parent cells.
(a) Three
(b) Two
(c) One
(d) Zero
What happens when a Planaria gets cut into two pieces?
Name the following : 'Blobs' that develop at the tips of the non-reproductive threads in Rhizopus.
Explain how non-reproductive structures protect themselves and what is the function of the structures released from the 'blobs' in Rhizopus.
List four modes of asexual reproduction.
How will an organism be benefited if it reproduces through spores?
External fertilisation takes place in frogs.
Binary fission is a method of asexual reproduction.
State two disadvantages of vegetative propagation?
Name the process by which an Amoeba reproduces. Draw the various stages of its reproduction in a proper sequence.
Name the asexual method of reproduction in yeast.
Which artificial propagation method is used for the production of jasmine plants?
Name one organism which reproduces by binary fission and another which reproduces by multiple fission.
State whether the above named organisms are animals or plants.
Why do green grass plants spring up in dry fields on their own after the rains?
Name one organism which reproduces by fission and another which reproduces by fragmentation.
Describe the cuttings method for the artificial propagation of plants. Illustrate your answer with the help of labelled diagrams.
An animal which reproduces by the process of budding is :
(a) Plasmodium
(b) yeast
(c) Hydra
(d) Planaria
Vegetative propagation refers to the formation of new plants from the following existing organs of the old plants :
(a) stems, roots and flowers
(b) stems, roots and leaves
(c) stems, flowers and fruits
(d) stems, leaves and flowers
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.
Briefly explain why a gardener prefers to grow certain plants vegetatively?
Multiple choice question. Tick (✓) the correct choice:
Budding is commonly seen in
- yeast
- grasses
- Amoeba
- Spirogyra
Why is vegetative propagation practiced for growing some types of plant? List two plants which are grown by this method.
Describe regeneration in Planaria with the help of a suitable diagram.
Write a short note on regeneration.
Give the name of the plant that reproduces vegetatively by: Bulbils
Grafting is not possible in the monocots because they
What is protandry?
Distinguish between the following.
Binary fission and Multiple fission
Vegetative propagation by leaves takes place in ______.
The asexual reproduction in bacteria occurs by ______.
Asexual reproduction is also known as ______.
Offspring formed by the asexual method of reproduction have greater similarities among themselves because ______
(i) asexual reproduction involves only one parent
(ii) asexual reproduction does not involve gametes
(iii) asexual reproduction occurs before sexual reproduction
(iv) asexual reproduction occurs after sexual reproduction
Can you consider cell division as a type of reproduction in unicellular organism? Give one reason.
Rajesh observed a patch of greenish black powdery mass on a stale piece of bread.
Name its vegetative and reproductive parts.
What do the following parts of a flower develop into after fertilisation?
| a. | Ovary | ______ |
| b. | Ovules | ______ |
Explain with the help of a labelled diagram, the process of reproduction in Hydra by budding. Name the cells used for reproduction in this process.
