Question

Question 1 Which type of reproduction involves only one parent? Question 2 Wh at are the two types of fission in asexual reproduction? Question 3 Give two examples of organisms that reproduce through budding. Question 4 What are soredia? Question 5 Name the various modes of asexual reproduction . Question 6 What is layering? Give one example. Question 7 What is tissue culture? Question 8 Differentiate between grafting and layering. Question 9 How is copying of DNA significant in reproduction? Question 10 Write short notes on the following . (i) Cutting (ii ) Layering (iii ) Grafting

Answer 1

1.... asexual reproduction
2...... binary fission and multiple fission
3.....flatworms and sea anemones
4.....Soredia are common reproductive structures of lichens. 
5...... spore formation , fission , vegetative reproduction , budding , fragmentation ....
6......a method of propagating a plant in which a shoot is fastened down to form roots while still attached to the parent plant.
7.......the growth in an artificial medium of cells derived from living tissue.
8......The vegetative propagation is the propagation which occurs through vegetative parts like root, stem and leaves of the plant. ... Layering and grafting are the most used methods of artificial vegetative propagation.
9..............DNA contains the blueprints for how to make the proteins and other molecules that make the cell run. ... Cellreplication is the process of going from one cell to two cells. Since the original single cell had only one set ofDNA, it needs to copy it so that both resulting cells have the DNA they need to survive.

Answer 2

1. Asexual reproduction
2. Binary fission and budding
3. Yeast and hydra