Fragmentation

Q.

How does vegetative reproduction occur in Agave?

Q.

Describe fragmentation in spirogyra with the help of a diagram.

Q.

We can develop new plants from the leaves of Bryophyllum. Comment.

Q.

Lila obseved that a pond with clear water was covered up with a green algae within a week. By which method of reproduction did the algae spread so rapidly?
a) Budding
b) Sexual reproduction
c) Fragmentation
d) Pollination

Q.

Fragmentation occurs in:

1. unicellular organisms
2. multicellular organisms
3. both of these
4. bicellular organisms

Q. The group of animals to which Sycon belongs can be best described as _____.

1. multicellular without any tissue organisation
2. multicellular having tissue organisation but not a body cavity
3. multicellular with a gastrovascular cavity
4. unicellular or acellular

Q.

Name a plant in which vegetative propagation takes place by leaves.

Q.

Fungi, ferns and mosses reproduce by______.

Q. Does budding occour in potatoes

Q. What are spores?

1. Tiny cells protected by thick walls to survive unfavorable conditions.
2. Buds formed in long chains.
3. Outgrowths from parent organism.
4. New organisms growing from leaflets.

Q.

Name the underground stem of onion.

Q. In the Bryophyllum plant, after the bud grows into a new independent plant, will the buds grow again on the leaf?

Q. Which of the following grows from the root?

1. Bryophyllum
2. Sweet potato
3. Ginger
4. Potato

Q.

In Spirogyra, asexual reproduction takes place by fragmentation.

1. True
2. False

Q. Which of the following organisms is likely to undergo fragmentation?

1. Hydra
2. Fungus
3. Bacteria
4. Algae

Q. Statement 1: In fragmentation, the broken parts of an organism's body develop into new organisms.

Statement 2: It is seen in Spirogyra.

Statement 3: It is a type of asexual reproduction.

1. Only statement 1 is correct.
2. Only statement 2 is correct.
3. Only statement 3 is correct.
4. All the statements are correct.

Q.

In sweet potato vegetative propagation takes place by

1. Root

2. Stem

3. Leaves

4. All the above

Q.

What is the process through which algae reproduce through vegetative means?

Q. Given below is the picture of Spirogyra, an algae. Choose the option that explains the process shown in the picture.

1. Asexual reproduction; Regeneration
2. Sexual reproduction; fragmentation
3. Asexual reproduction; fragmentation
4. Sexual reproduction; fertilization

Q. is a type of asexual reproduction in which broken parts of an organism's body develop into new organisms.

1. Fission
2. Fragmentation
3. Budding

Q.

Fragmentation is a mode of reproduction observed in___.

Q. Identify the correct order of regeneration process in Planaria.

1. Specialised cells multiplication$\to$ formation of identical tissues $\to$ organ formation
2. Specialised cells multiplication $\to$ differentiation of cells $\to$ formation of new tissues
3. Growth of cells$\to$ differentiation of cells $\to$ organ development
4. Differentiation of cells $\to$ growth of cells $\to$ formation of tissues

Q.

What is special about fragmentation

Q. Which among the following statements are correct with respect to the image given below?

1. Roots of potatoes give rise to new plants.
2. This is an example of fragmentation.
3. This is an example of vegetative propagation.
4. New potatoes can sprout from the eyes of the potato.

Q. In potatoes, new plants grow from

1. Leaves
2. Buds on the leaflets
3. Roots
4. Eyes

Q.

Define fragmentation.

Q. In which of the following organisms fragmentation occurs?

1. Spirogyra
2. All of the above
3. Bacteria
4. Yeast

Q. In ___________, a new individual develops from the broken fragments of the body of the parent organism.

1. 
   Spirogyra
2. 
   Rhizopus

Q. Fragmentation is a mode of reproduction in simple organisms.

1. unicellular
2. multicellular
3. complex

Q.

Which of the following are the advantages of reproducing using spores?

1. Spores do not contain stored food and hence are less likely to be eaten by animals.

2. Spores are tough and can survive unfavorable conditions such as high temperature and low humidity

3. Spores are light in weight allowing them to disperse far and wide.

4. Spores are produced in large quantities increasing the chances of survival